CONSOLIDATED EDISON COMPANY OF NEW YORK, INC.
4 IRVING PLACE
NEW YORK, NY 10003
ORANGE & ROCKLAND UTILITIES
390 WEST ROUTE 59
SPRING VALLEY, NY 10977
DISTRIBUTION ENGINEERING DEPARTMENT
SPECIFICATION EO-5015
REVISION 22
JULY 2015
EFFECTIVE DATE
AUGUST 31, 2015
PURCHASE REQUIREMENT FOR THREE PHASE, OIL FILLED, METAL ENCLOSED,
PAD-MOUNTED TRANSFORMERS
(FOR CECONY AND ORANGE AND ROCKLAND)
FILE: PURCHASE AND TEST MANUAL NO. 6, SECTION 25
FIELD MANUAL NO 22, SECTION NO. 8
TARGET AUDIENCE
NESC REFERENCE
PURCHASING DEPARTMENT
NONE
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TABLE OF CONTENTS
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
PURPOSE ............................................................................................................ 3
GENERAL ............................................................................................................ 3
ELECTRICAL REQUIREMENTS ......................................................................... 4
MECHANICAL REQUIREMENTS...................................................................... 11
FEEDER AND BANK TAG HOLDER ................................................................ 21
IDENTIFICATION ............................................................................................... 21
ACCESSORIES ................................................................................................. 22
INVITATION TO BID .......................................................................................... 24
MANUFACTURER’S PROPOSAL SUBMITTAL ............................................... 25
EVALUATION OF PROPOSALS ....................................................................... 26
AWARDING OF CONTERACTS........................................................................ 26
PURCHASE ORDERS ...................................................................................... 26
INSPECTIONS AND TESTS .............................................................................. 30
CERTIFIED TEST REPORTS ............................................................................ 30
COMPANY INSPECTIONS AND TESTS ........................................................... 31
DELIVERY WARRANTY AND UNIT RETURNED UNDER WARRANTY ......... 31
SHIPPING AND TRANSPORTATION ............................................................... 32
REFERENCES ................................................................................................... 32
APPENDIX ......................................................................................................... 32
ATTACHMENTS ................................................................................................ 33
Specification
EO–5015
Filing Information
Revision
22
Rev Date
7/ 2015
Purchase and Test
Effective
Date
8/31/2015
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1966-2015 Consolidated Edison Co. of New York, Inc.
Manual No. 6
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Distribution Engineering or http://distribution, for the current version prior to use.
PURCHASE REQUIREMENT FOR THREE PHASE,
OIL FILLED, METAL ENCLOSED, PAD MOUNT TRANSFORMERS
1.0
2.0
PURPOSE
1.1
This specification outlines the purchase and test requirements for three
phase, oil filled, metal enclosed pad mount transformers for both Con
Edison (CECONY) and Orange & Rockland Utilities, Inc. (O&RU).
1.2
These three phase pad-mount transformers shall be installed on the 4 kV,
13 kV, or 27kV underground residential distribution (URD) systems of both
CECONY and O&RU.
1.3
This specification also states the test and manufacturer's proposal
requirements of both CECONY and O&RU.
GENERAL
2.1
All requirements stipulated in this document apply to both CECONY and
O&RU (the Company), unless otherwise noted.
2.2
All characteristics, definitions, terminology, ratings and tests, except as
otherwise stated in this specification, shall be in accordance with the latest
revisions of ANSI and EEI-NEMA Standards on "Distribution Transformers."
Where there is a conflict between ANSI and EEI-NEMA Standards, the more
stringent standards shall apply.
2.3
All transformers shall comply with the latest efficiency requirements set by
the Department of Energy (D.O.E.).
2.4
The pad-mount transformers shall be oil immersed, self-cooled, three
phase, 60 Hertz, and "dead front" primary constructed with no exposed live
parts in the primary compartment.
2.5
The types of pad-mounted transformers purchased shall be:
2.6
Specification
EO–5015
Filing Information
Voltage (KV)
Type
13
4/13 (Dual Voltage)
27
Radial/Loop Feed
Radial/Loop Feed
Radial/Loop Feed
The radial feed transformers shall have provisions for a single 3 phase
primary source of supply.
Revision
22
Rev Date
7/ 2015
Purchase and Test
Effective
Date
8/31/2015
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Manual No. 6
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Distribution Engineering or http://distribution, for the current version prior to use.
2.7
All transformers shall have sufficient clearance to permit the conversion of
“Radial Feed” to “Loop Feed” via the insertion of feed-thru inserts (aka "Wish
Bone Tees" or “Binoculars”).
Note: Transformers with 600 amp primary bushings are for radial feed only
3.0
2.8
This specification also covers the requirement to install feed-thru loadbreak
inserts by the manufacturer on CECONY transformers only. O&RU
transformers do not require the installation of feed thru inserts and are not to
be supplied with the transformers.
2.9
All transformers purchased under this specification shall conform to Quality
Assurance Specification 7100 level D.
ELECTRICAL REQUIREMENTS
3.1
TRANSFORMER WINDINGS AND CORE
Transformer windings and core construction shall be as follows:
KV
4/13 Dual
(Con Ed) 13
(O&RU) 13
27
3.2
Winding
Y-Y
Delta-Y
Y-Y
Y-Y
Core Construction
5-Legged
3-Legged or 5-Legged
3-Legged or 5-Legged
5-Legged
BIL RATINGS
3.2.1 The BIL rating of all secondaries (208/120 and 480/277) shall be
30kV.
Note: Fully insulated 480V or 208V secondaries are acceptable
alternates for the "GrdY" reduced insulation system specified and
should be indicated in proposals and on nameplates when offered.
3.2.2 The BIL rating of primary, refer to Section 3.4.
3.3
TAP CHANGER
See Table 3.3 below for tap identifications.
a.
Specification
EO–5015
Filing Information
For 4265 V primary voltage –
All taps on the 4265 V windings
Revision
22
Rev Date
7/ 2015
Purchase and Test
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Date
8/31/2015
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Manual No. 6
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Position
1 or A
2 or B
3 or C
4 or D
5 or E
b.
Voltage
4372
4318
4265
4212
4158
Percentage
Tap position 1: 1¼% above tap pos. 2
Tap position 2: 1¼% above nominal
Tap position 3: NOMINAL
Tap position 4: 1¼% below nominal
Tap position 5: 1¼% below tap pos. 4
Position
1 or A
2 or B
3 or C
4 or D
5 or E
For 13200V and 13200/4160 V primary voltage –
All taps on 13200V windings
Voltage
Percentage
13860
Tap position 1: 2½% above tap pos. 2
13530
Tap position 2 : 2½% above nominal
13200
Tap position 3: NOMINAL
12870
Tap position 4 : 2½% below nominal
12540
Tap position 5: 2½% below tap pos. 4
Position
1 or A
2 or B
3 or C
4 or D
5 or E
For 25750 V primary voltage –
All taps on the 25750 windings
Voltage
Percentage
27035
Tap position 1: 2½% above tap pos. 2
26395
Tap position 2: 2½% above nominal
25750
Tap position 3: NOMINAL
25105
Tap position 4 : 2½% below nominal
24460
Tap position 5: 2½% below tap pos. 4
Position
1 or A
2 or B
3 or C
4 or D
5 or E
For 26400 V primary voltage –
All taps on the 26400 windings
Voltage
Percentage
27720
Tap position 1: 2½% above tap pos. 2
27060
Tap position 2: 2½% above nominal
26400
Tap position 3: NOMINAL
25740
Tap position 4 : 2½% below nominal
25080
Tap position 5: 2½% below tap pos. 4
c.
d.
Table 3.3 - TRANSFORMER TAPS IDENTIFICATION
3.4
TRANSFORMER RATINGS AND LINE NUMBERS
This section covers transformer ratings (i.e. voltage, primary BIL) and Line
Numbers. Three phase pad mount transformers specified in this Section
3.4 shall be supplied with isolated primary taps. Refer to Table 3.3 in
Section 3.3 for tap changer identifications and positions.
Specification
EO–5015
Filing Information
Revision
22
Rev Date
7/ 2015
Purchase and Test
Effective
Date
8/31/2015
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Manual No. 6
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3.4.1 4265 GrdY/2462 - 480 GrdY/277 - Radial Feed
KVA
1000
4265 GrdY/2462 - 480 GrdY/277
60kV BIL With Taps - Radial Feed
Primary Bushing Size
CECONY Item No.
(Amps)
200
81
3.4.2 13200 Delta - 208 GrdY/120 - Radial Feed
13200 Delta - 208 GrdY/120
95kV BIL With Taps - Radial Feed
KVA
150
300
500
1000
Primary Bushing Size
(Amps)
200
200
200
200
CECONY Item No.
82
83
84
85
3.4.3 13200 Delta - 480 GrdY/277 - Radial Feed
13200 Delta - 480 GrdY/277
95kV BIL With Taps - Radial Feed
KVA
500
1000
2000
Primary Bushing Size
(Amps)
200
200
200
CECONY Item No.
511
86
87
3.4.4 13200 GrdY/7620-208GrdY/120 - Radial Feed
13200 GrdY/7620-208GrdY/120
95kV BIL With Taps - Radial Feed
KVA
75
150
300
500
750
1000
Specification
EO–5015
Filing Information
Revision
22
Rev Date
7/ 2015
Purchase and Test
Primary Bushing Size
(Amps)
200
200
200
200
200
200
Effective
Date
8/31/2015
O&RU Class & Stock #
1015514
1015515
1015516
1015517
1015518
1015519
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Manual No. 6
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3.4.5 13200 GrdY/7620-480GrdY/277 - Radial Feed
13200 GrdY/7620-480GrdY/277
95kV BIL With Taps - Radial Feed
Primary Bushing Size
(Amps)
200
200
200
200
200
200
200
200
KVA
75
150
300
500
750
1000
1500
2500
O&RU Class & Stock #
1015520
1015521
1015522
1015523
1015524
1015525
1015526
1015527
3.4.6 Dual Rated 13200 GrdY/7620 x 4160 GrdY/2400-208GrdY/120
– (for both dual voltage switch positions) with Taps (except
as noted) - Radial Feed
Dual 13200 GrdY/7620 x 4160 GrdY/2400-208GrdY/120
95kV BIL - (for both dual voltage switch positions)
with Taps (except as noted) - Radial Feed
kVA
75
150
300
500
1000
Primary
Bushing Size
(Amps)
200
200
200
200
200
CECONY
Item No
O&RU Class
& Stock #
507 (No Taps)
94
95
96
97
1015501
1015502
1015503
1015504
N/A
3.4.7 Dual Rated 13200 GrdY/7620 x 4330 GrdY/2500 - 480GrdY/277 (for both dual voltage switch positions) With Taps - Radial Feed
KVA
150
500
Specification
EO–5015
Filing Information
Revision
22
Dual 13200 GrdY/7620 x 4330 GrdY/2500 480GrdY/277 - 95kV BIL - (for both dual voltage switch
positions) With Taps - Radial Feed
Primary Bushing Size (Amps) CECONY Item No.
200
537
200
504
Rev Date
7/ 2015
Purchase and Test
Effective
Date
8/31/2015
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Manual No. 6
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1000
2000
200
600 (Radial Feed Only)
98
506
3.4.8 Dual Rated 13200 GrdY/7620 x 4160 GrdY/2400 – 480GrdY/277 (for both dual voltage switch positions) with Taps - Radial Feed
KVA
75
150
300
500
750
Dual 13200 GrdY/7620 x 4160 GrdY/2400 –
480GrdY/277 - 95kV BIL – (for both dual voltage
switch positions) With Taps - Radial Feed
O&RU Class & Stock
Primary Bushing Size
#
(Amps)
200
1015507
200
1015508
200
1015509
200
1015510
200
1015511
3.4.9 25750 GrdY/14870 - 208 GrdY/120 - With Taps - Radial Feed
KVA
500
1000
25750 GrdY/14870 - 208 GrdY/120
150kV BIL - With Taps Radial Feed
Primary Bushing Size
CECONY Item No.
(Amps)
200
530
200
534
3.4.10 26,400 GrdY/15,240 - 480 GrdY/277 - With Taps - Radial Feed
KVA
500
1000
3.5
26,400 GrdY/15,240 - 480 GrdY/277
150kV BIL -With Taps - Radial Feed
Primary Bushing Size
CECONY Item No.
(Amps)
200 A
532
200 A
536
IMPEDANCE
3.5.1 The impedance range for each size, including all tolerances, shall be
as follows:
a. 13KV and Dual Rated
Transformers
Specification
EO–5015
Filing Information
Revision
22
Rev Date
7/ 2015
Purchase and Test
Effective
Date
8/31/2015
Impedance Range (% on
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Manual No. 6
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Distribution Engineering or http://distribution, for the current version prior to use.
KVA
75
150
300
500
750
750
1000
1000
1500
2000
2500
Secondary Volts
208/120
208/120
208/120
208/120 & 480/277
208/120
480/277
208/120
480/277
480/277
480/277
480/277
b. 27KV and Dual Rated
Transformers
KVA
Secondary Volts
500
208/120
1000
208/120
500
480/277
1000
480/277
Rating)
1.51 to 1.86
1.25 to 4.10
2.30 to 3.80
2.30 to 3.70
5.32 to 6.18
5.32 to 6.18
5.32 to 6.18
5.32 to 6.18
5.32 to 6.18
5.32 to 6.18
5.32 to 6.18
Impedance Range (% on
Rating)
2.3 to 3.7
3.5 to 4.5
4.0 to 5.5
4.0 to 6.5
NOTE: Failure to meet the specified impedances will result in
automatic rejection of the applicable line item.
3.6
PRIMARY FUSE AND FUSE HOLDER
3.6.1 Units purchased shall have a partial range current limiting fuse(s) in
series with an expulsion fuse(s).
3.6.2 The expulsion fuse(s) shall be Bay-O-Net type, full range, with drip
shields located in the primary compartment. The fuse shall be
contained in gasketed and tightly sealed Bay-O-Net assembly and
shall be field replaceable.
The fuse sizes shall be submitted to and approved by CECONY or
O&RU Distribution Engineering for the first order only of each size
and type.
3.6.3 The Bay-O-Net fuse assembly shall have a flapper valve to minimize
oil spillage upon removal. This shall be Eaton/Cooper Power
Systems Catalog Number 4000361C99FV or the Company
Engineering Department approved equivalent.
Specification
EO–5015
Filing Information
Revision
22
Rev Date
7/ 2015
Purchase and Test
Effective
Date
8/31/2015
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1966-2015 Consolidated Edison Co. of New York, Inc.
Manual No. 6
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3.6.4 All 13.2/4.16 dual voltage units shall be shipped from the
manufacturer with an 8.3kV rated current limiting fuse, with ampacity
for transformer operation at 4.16kV as listed in Section 3.6.5.a.
below.
3.6.5 “LOADBREAK” shall be stenciled above the fuses.
3.6.6 The following fuse combinations are acceptable for CECONY
transformers:
TABLE A: FOR CECONY ONLY
For Dual Voltage Transformers (13200 GrdY/7620 x 4160 GrdY/2400) Set @ 4.16KV
FLA
Fuse
Eaton/Cooper
Eaton/Cooper
Voltage Size
Rating
Rating Rating
Bay-O-Net
Current Limiting
(kV)
(kVA)
(Amps)
(Amps) (Amps)
Part No.
Part No.
75
150
300
500
4.16
1000
1500
2000
2500
*Fuses in Parallel
Voltage
(kV)
Size
(kVA)
13.2
75
150
300
500
750
1000
1500
2000
2500
Specification
EO–5015
Filing Information
11
21
42
70
139
208
278
347
25
40
65
140
140
4000353C10
4000353C12
4000353C14
4000353C17
4000353C17*
80
150
150
300
360
TABLE B: For Straight 13.2KV Units
FLA
Fuse
Eaton/Cooper
Rating
Rating Rating
Bay-O-Net
(Amps)
(Amps) (Amps)
Part No.
3
7
13
22
33
44
66
88
109
Revision
22
6
15
25
40
40
65
140
140
100*
Rev Date
7/ 2015
Purchase and Test
4000353C04
4000353C08
4000353C10
4000353C12
4000353C12
4000353C14
4000353C17
4000353C17
4000353C16*
Effective
Date
8/31/2015
30
65
80
150
150
150
250
250
300
CBUC08100C100
CBUC08150D100
CBUC08165D100
CBUC08150D100*
CBUC08180D100*
Eaton/Cooper
Current Limiting
Part No.
CBUC08030C100
CBUC08065C100
CBUC08080C100
CBUC08150D100
CBUC08150D100
CBUC08150D100
CBUC08250C100
CBUC08250C100
CBUC08150D100*
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Manual No. 6
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Distribution Engineering or http://distribution, for the current version prior to use.
*Fuses in Parallel
3.6.7 The following fuse combinations are acceptable for O&RU
transformers:
TABLE C:
For Dual Voltage Transformers (13200 GrdY/7620 x 4160 GrdY/2400) Set @ 4.16KV
FLA
Fuse
Eaton/Cooper
Voltage Size
Rating
Hi-Tech
Rating Rating
Expulsion
(kV)
(kVA)
(Amps)
Internal CLF
(Amps) (Amps)
(Bayonet)
75
11
40
4000353C12
150
21
65
4000353C14
4.16
300
42
100
4000353C16
500
70
140
4000353C17
750
104
140
4000358C18**
*Fuses in Parallel
**Dual sensing bayonet fuse, not current sensing
Voltage
(kV)
Size
(kVA)
TABLE D: For Straight 13.2KV Units
FLA
Fuse
Eaton/Cooper
Rating
Rating Rating
Expulsion
(Amps)
(Amps) (Amps)
(Bayonet)
75
3
10
4000353C06
150
7
15
4000353C08
300
13
40
4000353C12
500
22
65
4000353C14
13.2
750
33
65
4000353C14
1000
44
100
4000353C16
1500
66
140
4000353C17
2000
88
140
4000353C17
2500
109
140
4000358C18**
*Fuses in Parallel
**Dual sensing bayonet fuse, not current sensing
4.0
125
165
300*
330*
360
50
85
125
150
150
200*
300*
300*
300*
HTSS232125
HTSX232165
HTSS232150*
HTSS232165*
HTSS232200*
Hi-Tech
Internal CLF
HTSS232050
HTSS232080
HTSS242125
HTSS242150
HTSS242150
HTSS242100*
HTSS242150*
HTSS242150*
HTSS242150*
MECHANICAL REQUIREMENTS
4.1
Specification
EO–5015
Filing Information
General Construction
Revision
22
Rev Date
7/ 2015
Purchase and Test
Effective
Date
8/31/2015
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1966-2015 Consolidated Edison Co. of New York, Inc.
Manual No. 6
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4.1.1
The padmount transformer consists of a cabinet and tank. The
cabinet consists of one high voltage compartment, one low voltage
compartment, and two separate doors. The general arrangements
for cabinet and tank shall be in accordance with Drawing No.
328371. All metal sections of the entire unit shall be adequately
joined together.
4.1.2
The tank and the compartment shall be assembled as an integral
unit, and shall be metal enclosed, weather-resistant, and tamper
resistant. The unit shall be designed for anchoring on a pad
without additional housing, fences, or other provisions to make the
unit safe for direct contact with the public. The manufacturer shall
submit proof that the designs comply with the test procedures and
requirements of the design test method for cabinet security
described in ANSI C57.12.28, "American National Standard for
Switchgear and Transformers – Pad-mounted Equipment Enclosure Integrity."
4.1.3
The overall transformer footprint shall be as follows:
a. For CECONY: Units shall be designed to fit on the concrete pad
as shown in Drawing Nos. 328372 and EO-13775-B without
overhanging the slab or exposing cable entrance openings
through the slabs. Coolers however, if required, may overhang
out from the tank enclosure and slab a maximum of 30 inches.
Cooling radiators may be located on the rear or side portions of
the transformer tank, refer to Drawing No. 328371 for details.
b. For O&RU: Units shall be designed to fit on the concrete pad as
shown in Appendix A, O&RU Pad-mount Transformer
Installations for concrete pad dimensions.
4.1.4
The transformer material shall have the following minimum
thicknesses:
Cabinet ---------------- 0.090 inches (13 gauge)
Tank Walls ------------ 0.179 inches (7 gauge)
Auxiliary Coolers----- 0.048 inches (18 gauge)
4.1.5
Specification
EO–5015
Filing Information
Revision
22
The entire surface of the pad-mount transformer shall be treated to
minimize corrosion. The enclosure coating system shall comply
with section 5 of ANSI C57.12.28-1988, "American National
Standard for Switchgear and Transformers-Pad-mounted
Equipment - Enclosure Security."
Rev Date
7/ 2015
Purchase and Test
Effective
Date
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4.1.6
The entire cabinet and tank shall be coated with weather-resistant,
chip resistant paint. The final paint finish shall be dark, green color,
either Munsell Notation 5.5 GY 2.76/2.1 or 7 GY 3.29/1.5.
4.1.7
The unit (up to and including the 2500kVA size) shall be equipped
with integral bottom support bars and be so constructed that it can
be lifted using a forklift, using a crane, or skidded, and slid into
place without damage to the cabinet or tank components. It shall
not be necessary to have to use a crane to move and position the
unit. However, provisions for crane lifting shall also be provided.
4.1.8
All transformer cabinets shall have two separate outside metal
doors. One door shall provide access to the low voltage
compartment and one to the high voltage compartment. Each door
shall have welded on, inside non-corrosive hinges. Bolted on
hinges are acceptable provided the mounting hardware is brass,
bronze or stainless steel and the hinges are secured so that there
are no exposed screws, bolts, or other fastening or devices that are
externally removable (with the exception of the penta head bolts
provided for extra security) that could provide access to energized
parts in the enclosure.
4.1.9
All doors shall have non-corrosive, tamper resistant hinges.
4.1.10 The front sill shall be removable.
4.1.11 Transformer sill and risers shall be manufactured of 304 Stainless
Steel.
4.2
Specification
EO–5015
Filing Information
Cabinet Construction
4.2.1
Cabinet doors shall be of sufficient size to provide adequate
working space when opened between 160° and 180°. The doors
shall be provided with latch stops, installed by the manufacturer, for
latching the door in the open position at 100°.
4.2.2
The low and high voltage compartment doors shall be adequately
reinforced from the inside to prevent entrance into the
compartments and misalignment of the doors and locking
mechanisms.
4.2.3
A flange (¾-inch minimum width; 2 inch maximum width) shall be
provided at the base of both the high voltage and low voltage
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compartments to provide a means for anchoring the unit to the pad.
4.2.4
CECONY Purchase Orders: Doors with a maximum opening of 90°
are acceptable, provided there is a 12" minimum clearance
between high voltage bushing H1 and the door.
4.2.5
For all units, the high voltage compartment shall have a minimum
width of 43". The depth of the high voltage and the low voltage
compartments shall be a minimum of 20" for 13 kV & dual 13/4kV
units and 23" for 27 kV units.
Note: for O&RU units 750KVA and greater, the minimum
secondary compartment depth shall be 24" (inches).
4.2.6
The following LV compartment minimum widths are required:
KVA Size
75 thru 150
75 thru 150
300
300 thru 500
500
750
1000
1000
1500 thru
2500
Specification
EO–5015
Filing Information
Secondary
Volts
208/120
277/480
277/480
208/120
480/277
120/208 and
277/480V
208/120
480/277
480/277
LV Compartment Minimum
Width
(Inches)
24” Both Companies
25”
28”
32” CECONY; 28” O&RU
32” CECONY; 28” O&RU
O&RU Only – 28”
40” CECONY; 28” O&RU
36” CECONY; 28” O&RU
40” CECONY; 28” O&RU
4.2.7
The high voltage – low voltage partition shall be constructed of nonconductive material or shall have an insulating barrier suitable for
7.62 kV to ground applications installed on the high voltage side of
the metal. The 4.5” minimum dimension between the H3 bushing
well and the partition shall be to the surface of the insulating barrier.
4.2.8
The low voltage compartment door shall be equipped with a
handle, which has a three point latching device. The latching shall
be at the top, bottom and center. The center shall fasten to the
metal compartment divider.
4.2.9
In addition to the above, all access doors shall be fastened with a
device that requires a penta head tool to permit unlatching the
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door only after the padlock has been removed. Hex head bolts are
not acceptable. The penta head device or penta head captive bolt
shall be coordinated such that the padlock may not be inserted
into the hasp until the access door is fully latched and the penta
head device is secured.
4.2.10 A minimum of one penta head device or captive bolt and
padlocking means shall be provided. The penta head device or
bolt shall be surrounded by a non-rotating guard or shall be
recessed such that the penta head device or bolt can be engaged
only by the proper tools. The dimensions of the penta head bolt
and non-rotating recess or guard shall comply with ANSI
C57.12.28-1988, Fig. 1.
4.2.11 The penta head device or bolt shall not be readily removable
during normal operation of the door(s) and, if removed or
disengaged, there shall be no holes remaining that would permit
entry of a wire into the enclosure.
4.3
Tank Construction
4.3.1
A float type liquid level gauge shall visually indicate the oil level .
The gauge shall be mounted such that when it indicates the oil
level is “low”, it is unsafe to operate the bayonet fuse as a
loadbreak device. It shall be installed in the high voltage
compartment near the bayonet fuses.
The liquid level gauge shall be Heartland Liquid Level Gauge
Catalog #HLG-1000 or Con Edison or Orange & Rockland
Engineering approved equivalent.
Specification
EO–5015
Filing Information
4.3.2
A standard top-oil temperature gauge shall be supplied and
installed in the low voltage compartment.
4.3.3
An oil-sampling valve shall be supplied and located in the bottom
right corner of the primary compartment, between 3 inches and 6
inches from the HV/LV barrier as shown in Drawing No. 328373.
4.3.3
All units shall be provided with a handhole. The handhole cover
shall be bolted on for all units and shall be covered with a false
tamper-resistant roof.
4.3.4
The handhole shall provide functional access to all components. A
rectangular handhole 12" min. X 18" min. or a round handhole with
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an 18" min. diameter is required. As an alternate, for units with a
tank width of less than 62" a handhole of 9.5" min. X 17.5" min.
may be provided. For units with a tank width of 62" and greater,
two handholes shall be provided - each a minimum of 9.5" X 17.5".
4.4
Specification
EO–5015
Filing Information
High Voltage Terminals
4.4.1
All high voltage terminals, located in the high voltage
compartment, shall be of completely "dead front" design. High
voltage terminals rated 200 amps shall be Elastimold "Flower Pot"
short shank bushing wells with bail tabs and replaceable stud or
equal. High voltage bushing wells are to be gasketed to the tank.
The bushing well shall be rated at 35kV and 150kV BIL. It shall be
capable of directly accepting inserts for the 13kV and 34kV
systems. High voltage bushing wells shall be installed complete
with bail tabs. Acceptable manufacturer and catalog numbers for
high voltage bushing wells are Elastimold L1601-PC-S1,
Eaton/Cooper Power BW150R, ABB 609C030G01 or
609C030G02, Colt 3-701911-50, or a CECONY or O&RU
engineering approved equal.
4.4.2
High voltage terminals rated 600 amps shall be solid epoxy
bushing, top mounted Elastimold Catalog No. 600T1 or equal.
There are no bushing wells or feed-thru inserts for 600 amp
primary units. The 600 amp bushings shall be rated 15kV and shall
be gasketed to the tank.
4.4.3
All high voltage bushing wells shall have four tabs, each with hole
to accept primary elbow hold down bails. These tabs shall be
mounted at a 45° angle from the vertical and horizontal plane.
4.4.4
The units shall be provided with three high voltage terminals, six
ground clamps and three parking stands. The general
arrangement of these shall be in accordance with Drawing No.
328373. The High voltage bushings shall be arranged as per
ANSI C57.12.26 Figure 5(a) for 15.2 kV connectors.
4.4.5
All high voltage terminals, except as noted, shall have a minimum
continuous rating of 200 amperes (r.m.s.) and shall withstand
momentary fault currents up to 10,000 amps, r.m.s. symmetrical
without damage.
4.4.6
For CECONY Only: For transformers rated 1500kVA and
2500kVA with either 13.2kV or dual 13x4kV primaries, the high
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voltage terminals shall have a minimum continuous rating of 600
amperes (r.m.s.) and a momentary fault withstand rating of 40,000
amps, r.m.s, symmetrical. All internal ties and connections shall be
designed to carry the rated current of the transformer continuously
for at least three consecutive days, without damage.
4.4.7
All high voltage terminals shall be labeled in accordance with
Drawing No. 328373. Stenciled letters shall be 1.75 inches high,
painted yellow.
4.4.8
High voltage bushing wells shall be installed such that the clamping
bolts and the “hold down” bail tabs shall not extend more than 3/8”
above the top surface of the bushing well.
4.4.10 Stand-off brackets and brackets for feed through devices must be
solidly welded to the tank.
4.5
Specification
EO–5015
Filing Information
Low Voltage Terminals
4.5.1
Four low voltage terminals shall be located in the low voltage
compartment. Three of these terminals shall be for the phase
connections and one for the neutral. The terminals and/or internal
leads shall be easily disconnectable from the handhole. These
terminals shall be staggered and labeled in accordance with
Drawing No. 328373.
4.5.2
The continuous rating and fault withstand rating of the secondary
terminals shall be in accordance with ANSI and NEMA Standards.
4.5.3
All low voltage terminals and the Xo secondary neutral shall consist
of tinned copper or bronze spades. The thickness of these spades
shall be 3/8" for 75 thru 500 kVA, and ½" for 1000 thru 2500 kVA.
These spades shall have standard ANSI hole drilling and standard
vertical hole spacing. The number of holes required and the
horizontal spacing between sets of holes as per Drawing
No. 349474 shall be as follows:
Revision
22
KVA
Secondary
Volts
75
150
208/120
208/120
Rev Date
7/ 2015
Purchase and Test
Effective
Date
8/31/2015
Number of (Sets)
Holes
(4sets)
(4 sets)
8 holes
8 holes
Center-to-Center
Horizontal
Spacing
2-½"
2-½"
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300
500
500
750
750
1000
1000
1500
2000
2500
208/120
208/120
480/277
208/120
480/277
208/120
480/277
480/277
480/277
480/277
(4 sets)
(4 sets)
(4 sets)
(4 sets)
(4 sets)
(7 sets)
(4sets)
(5 sets)
(7 sets)
(5 sets)
8 holes
8 holes
8 holes
8 holes
8 holes
14 holes
6 holes
10 holes
14 holes
10 holes
2-½"
2-½"
2-½"
2-½"
2-½"
2-½"
2-½"
2-½"
2-½"
2-½"
4.5.4
CECONY Purchase Orders Only: When installing secondary
cables on these spades, the Company uses four-pound limiter lugs
as a terminating device. These lugs are mounted back-to-back on
each set of holes, thereby putting an additional eight-pound load on
each set of holes. The manufacturer shall provide permanent or
easily removable (for maintenance) mechanical supports.
Permanent supports utilizing the tank or cabinet shall include full
rated insulators between phase terminals and compartment.
4.5.5
An insulated support shall be included on 750KVA and larger units.
The insulated support shall be connected between the secondary
bushings and the cabinet frame such that each busing is capable of
supporting ten (10) 500MCM copper cables, each six (6) feet long.
4.5.6
In additional, adequate clearances shall be provided between all
low voltage spades and the cabinet. Supports used for low voltage
spades shall not interfere with the assembly of lugs onto the
spades.
4.5.7
On all units, the Xo secondary neutral terminal shall be:
a. Solidly welded to the tank, with the ground strap internally
bolted to the tank, and easily accessible from the handhole; or
b. Employ an insulated neutral bushing with an external ground
strap bolted to the tank. The external ground strap must be
capable of carrying full short circuit current and must not occupy
any of the above required cable hole sets.
4.5.8
Specification
EO–5015
Filing Information
Revision
22
On Y-Y units, the Ho (high voltage neutral) and Xo (low voltage
Neutral) shall be internally connected through a removable link
(located below, and accessible through, the handhole).
Rev Date
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4.5.9
4.6
The secondary bushings shall be made of a non-porcelain material.
Loadbreak Switch
4.6.1
All straight and dual voltage three phase, metal enclosed,
transformers shall be provided with a built-in, 3-phase load break
switch rated 200 Amperes continuous, that will be used to deenergize the transformer.
NOTE: It is totally unacceptable to provide three single phase
switches in lieu of a single 3-phase switch.
4.6.2
The three-phase load break switches detailed in this Section 4.6
shall be Eaton/Cooper Power Catalog Number LS2R338H3N1A
and have the following minimum electrical characteristics:
a.
13kV Transformers (All Types except 600 Amp Primary Units)
Voltage Class ------------------------ 15kV
Phase-to-Ground ------------------- 8.3kV Max.
Phase-to-Phase --------------------- 14.4kV Max.
AC Withstand ------------------------ 34kV, 60HZ, 1 min.
DC Withstand ------------------------ 53kV, 15 mins.
Corona Extinction Voltage -------- 11kV
BIL -------------------------------------- 95 kV 1.2x50 microsecond wave
Phases --------------------------------- 3 Simultaneous
Continuous Load Current --------- 200 amperes
Magnetizing Interrupting Current --10 amperes
Short-Circuit Withstand Capability-10,000 amperes RMS
symmetrical 0.17 sec) 1.3 max.
asymmetrical factor.
b.
27kV Transformers (all types)
Voltage Class -----------------------Phase-to-Ground -------------------Phase-to-Phase ---------------------AC Withstand ------------------------DC Withstand -----------------------Corona Extinction Voltage -------BIL -------------------------------------Phases -------------------------------Continuous Load Current ---------Magnetizing Interrupting Current Short-Circuit Withstand CapabilitySpecification
EO–5015
Filing Information
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Date
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35kV
21.lkV Max.
36.6kV Max.
50kV, 60HZ, 1 min.
103kV, 15 mins.
26kV
150kV 1.2x50 microsecond wave
3 Simultaneous
200 amperes
10 amperes
10,000 amperes RMS
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symmetrical (0.17 sec) 1.3
maximum asymmetrical factor.
4.6.3
4.7
Parking Stands
4.7.1
4.8
Specification
EO–5015
Filing Information
These 13 & 27 kV primary load-break switches shall be operated
remotely with a hot-stick. These switches shall have load-break
capability for a PF of 70% to 80% lagging and shall be capable of
closing in on the maximum fault without damage.
Parking stands shall be provided in the high voltage compartment
in accordance with the arrangement shown in Drawing No.
328373. These parking stands shall accommodate all primary
load-break accessories and shall be stenciled as indicated in
Drawing No. 328373. The letters, associated with the primary
phases “A”, “B” and “C” shall be stenciled over each parking
stand. They shall be 0.75 inches high, painted yellow. Parking
stands are to be extended a sufficient distance from the front face
of the transformer tank wall to allow installation and operation of
cables and terminations when loop feed adapters (Feed-Thru
Inserts "Wish Bone Tees" or “Binoculars”) are installed on the high
voltage bushings. Sufficient vertical clearance shall also be
provided between the parking stands and the high voltage
bushings to allow the insertion of the feed-thru inserts without
abrasion. The bushing well mounting bolts shall be cut short
enough so as to not interfere with the inserts. Cables and
terminators "parked" shall not interfere with cables and terminators
connected to the loop feed adapters. Sufficient clearance shall be
provided to permit the installation of bushing mounted, elbow type
surge arresters in all units.
Grounds and Tank Grounds
4.8.1
A copper or stainless steel tank ground pad shall be brazed or
welded to both the high and low voltage compartments. This pad
shall consist of two 1/2"-13 NC tapped holes (3/4" deep), spaced
1-3/4" distance between centers.
4.8.2
Ground clamps shall be provided in the high voltage compartment
for terminating high voltage cable neutrals. These clamps shall be
capable of accepting #8 to 2/0 AWG stranded copper conductors.
They shall be screwed into a tapped boss that is welded to the
tank. Two clamps per bushing are required.
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4.9
5.0
4.9.1
The oil to be used in the transformers shall be hydro-refined oil
containing by weight 0.15% to 0.18% DBPC (2, 6 Ditertrary Butyl
Para Cresol) inhibitor. Lower levels of inhibitor are not acceptable.
The type of oil to be used shall be listed in the proposal. The
approved oils are listed in Con Edison Specification EO-10,812.
4.9.2
The oil used in the transformer shall have no detectable
concentrations of polychlorinated biphenyls (PCB's). A detectable
concentration is defined as greater than 1.0 ppm.
4.9.3
In addition to the transformer’s ratings and its date of manufacture
etched into the manufacturer’s corrosion resistant nameplate, the
following statement shall be included on the nameplate: "This
Transformer is PCB Free at Time of Manufacture", or “Contains
less than 1 ppm of PCB’s at the time of manufacture”. The
nameplate shall be mounted inside of the low voltage compartment
door.
FEEDER AND BANK TAG HOLDER
5.1
6.0
Oil
CECONY Purchase Orders: The manufacturer shall provide a feeder and
bank tag holder bracket on the inside of the low voltage compartment door.
This bracket shall be in accordance with Drawing No. 328374.
IDENTIFICATION
6.1
For All CECONY Purchase Orders:
6.1.1
The following class letters shall be stenciled on the inside of the low
voltage compartment door as indicated on Drawing No. 328374 with
1.75" minimum yellow lettering:
Type of Unit
Bushing Size
(Amps)
13kV Radial
4x13kV Radial
27kV Radial
13kV Radial
4x13 kV Radial
Specification
EO–5015
Filing Information
Revision
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Purchase and Test
200A
200A
200A
600A
600A
Effective
Date
8/31/2015
Class Letters
PM-13R
PM -4/13DR
PM -27R
PM -13R
PM -4/13DR
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PM (Pad-mount); D (Dual Voltage); R (Radial)
6.1.2
The transformer serial number, class letters, primary and secondary
voltages and Line Item Number shall be stenciled externally on the
upper quadrant of either side of the transformer.
6.1.3
The secondary voltages shall be stenciled on the inside of the low
voltage compartment door as follows:
6.1.3.1 Units with a 277/480 secondary shall have “CAUTION 480
VOLTS SECONDARY" label stenciled in yellow with 1.75"
minimum letters. This warning label shall also be stenciled
in red above the secondary terminals.
6.1.3.2 Units with a 120/208 secondary shall have “120/208 V”
stenciled in yellow only.
6.2
6.3
7.0
For all Orange and Purchase Orders:
6.2.1
The Orange & Rockland material number shall be painted on the
outside of the high voltage compartment door on the lower left
corner. The lettering shall be yellow 1.0” high. The material numbers
are listed in Section 3.4.
6.2.2
The transformer size, primary and secondary voltages, serial
number, and impedance shall be stenciled externally on the upper
quadrant of either side of the transformer.
Orange and Purchase Orders: Transformers shall be provided with bar
code labels.
6.3.1
The labels shall be fabricated and installed as per latest issue of
Orange & Rockland Utilities, Inc. Material Standard M-11-80.
6.3.2
A sample (an actual O&RU label is required) shall be submitted to
Orange & Rockland Materials Management Department for
approval prior to use or installation on any transformer supplied to
O&RU.
ACCESSORIES
The following accessories shall be provided by the manufacturer on all units and
shall all be located in the compartment as indicated.
Specification
EO–5015
Filing Information
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7.1
Liquid level gauge, float type (High Voltage Compartment, see Section 4.3)
7.2
Standard top-oil temperature gauge (Low Voltage Compartment, see
Section 4.3)
7.3
A 1" fill plug (Low Voltage Compartment, see Section 4.3)
7.4
A 1” drain valve with sampling fitting or any other type of equivalent device.
The device shall be located in the high voltage compartment, between 3 to
6 inches from the HV/LV barrier as shown in Drawing No. 328373. This will
enable trained personnel to sample the insulating fluid at any time, while the
transformer is energized and in operation. Under no circumstances shall a
sampling device be provided, which requires de-energization of the
transformer, for insulating fluid sampling.
7.5
Tap changers shall be located in the high voltage compartment above the
HV bushings on:
a. 13kV winding of all straight and dual rated 13/4kV transformers, and
on the high voltage winding of all 27kV transformers.
b. The tap shall have an external handle with notations (numbers or
letters) for the tap position that has the same sequence that appears
on the nameplate. Only numbers or only letters shall be visible.
Refer to Tables 3.3 for “Tap Position Identification”.
c. The tap changer handle shall be installed where it can be easily
operated.
7.6
A dual voltage switch, when required, shall be installed above the high
voltage bushings. The handle shall be installed where it can be easily
operated.
7.7
IFD: Each transformer shall be equipped with a non-resettable Internal
Fault Detector (IFD) which detects internal transformer faults and provides
indicator of the faults. The IFD shall also incorporate pressure relief
functionality.
7.8
For all CECONY Purchases only: The manufacturer shall install feed thru
Loadbreak inserts on all transformers. The inserts shall be rotatable 360° to
allow the operator to orient it to the best position. The following table lists
the acceptable feed-thru loadbreak inserts for each primary voltage class:
Specification
EO–5015
Filing Information
Revision
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7/ 2015
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Date
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Rating (kV)
15
15
25
35
8.0
Manufacturer
Elastimold
Cooper Power/EATON
Cooper Power/EATON
Elastimold
Catalog Number
1602A3R
LF1215
LF1225
3702A1
7.9
Fuses shall be located in the high voltage compartment above the cable
bushings, and shall be plainly visible and operable with the compartment
doors open. “LOADBREAK” shall be stenciled on the tank above the fuses
7.10
A nameplate shall be fastened to the tank wall above the secondary
bushings, indicating the month and year of manufacture. This requirement is
in addition to any date of manufacture that may be coded into the
transformer serial number.
7.11
Transformers shall be capable of accepting 27kV rated plug-in type
dead-front surge arresters. However, the arresters are not part of this
specification and shall not be provided with the transformer.
7.12
The tap changer and dual voltage switch handles shall be installed where
they can be easily operated and stenciled to indicate what they are (e.g.
"Dual Voltage Switch"). Stenciled letters to be 0.75 inches high, painted
yellow. Both switches shall clearly indicate their modes of operation.
7.13
Tap Changer and Dual voltage switch handles and operating mechanisms
shall be constructed of suitable materials and shall maintain contact
alignment in spite of repeated or infrequent operations, in order to provide
increased reliability.
7.14
CECONY Purchase Orders Only: The manufacturer shall install the
“CAUTION”, “WARNING”, “NOTICE” and “DANGER” labels in accordance
with EO-3101.
INVITATION TO BID
All qualified and approved manufacturers shall receive an “Invitation to Bid” from
the Purchasing Department of Con Edison. The Bid package should include the
following:
8.1
Alternates or additions to this specification.
8.2
A copy of this specification along with copies of all applicable references
such as specifications or drawings listed in Section 18.0. In the event that
Specification
EO–5015
Filing Information
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any references were omitted in the Bid package, it is the responsibility of
the manufacturer to submit requests for proper documents (specifications,
drawings, etc.) through the Purchasing Department and does not relieve
the manufacturer of its responsibilities under the contract.
8.3
9.0
Estimated quantity of transformers to be purchased by line item number.
MANUFACTURER’S PROPOSAL SUBMITTAL
In response to the “Invitation to Bid”, the invited Bidder (qualified and approved)
shall submit a complete proposal in accordance with this specification. This
complete formal proposal shall include, but not be limited to, the following:
9.1
A cover letter that includes a brief statement of the company, organization
chart, objective of the bid, products & services, advantage over competitors,
timelines on the design and production phrases, expectation on
deliverables, QA/QC procedure, and other utility companies’ contact
information as business references, etc.
9.2
Electrical and physical characteristics of the pad mount transformers in
accordance with ANSI C57.12.00, “General Requirements for Distribution
Power and Regulating Transformers,” and ANSI C57.12.22, “Requirements
for Pad-Mounted, Compartmental-Type, Self-Cooled, Three-Phase
Distribution Transformers”.
9.3
A list of every single exception taken to the specifications, if applicable,
must be provided; the exceptions must be noted on the drawings as well. If
no exceptions are taken, a statement must be included in the cover letter.
Exceptions approved on prior bids must be re-submitted as a new
exception, requiring a new and separate approval.
9.4
An outline sketch of the transformer showing the location of bushings and
accessory equipment including all labels, stencils and nameplate data).
9.5
A list of every single component with its associated manufacturer and
catalog number.
9.6
Dual voltages switch information and drawings (if applicable).
9.7
Tap changer information (if applicable).
9.8
Type and properties of the insulating fluid being used.
9.9
Drawings of top-oil temperature gauge and liquid level gauge.
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10.0
9.10
Nameplate drawings.
9.11
Drawings for load-break switch and technical information if applicable.
9.12
The attached, “Attachment 1- Three Phase Pad-mount Transformer
Guarantee Report” shall be completely filled out, and considered part of the
quotation.
9.13
Maximum guaranteed no load and load losses (part of the attached
“Attachment 1- Three Phase Pad-mount Transformer Guarantee Report”)
must be included for each unit supplied, not the average value of units
shipped. For dual voltage transformers, losses guaranteed shall be the
maximum losses of the two ratings.
EVALUATION OF PROPOSALS
10.1
The Company’s objective is to award contracts to manufacturers who can
provide cost effective product designs that guarantee high quality and
reliable service.
10.2
All Proposals shall be kept confidential.
10.3
CECONY and O&RU (the Company) may organize a pre-bid meeting
between the invited manufacturers and the Company to emphasize what
the expectations of the bid shall be.
10.4
CECONY and O&RU Engineering shall evaluate and rank the proposed
products based on the submitted proposal to determine the most
technically competent and reliable manufacturers.
10.5
The list of the exceptions submitted with the proposal shall be assumed to
be the only exceptions taken against the specifications. The bidder holds
and accepts all responsibility for not listing or overlooking “Exceptions to
the Specification”. Exceptions approved on prior bids must be re-submitted
as a new exception, requiring a new and separate approval. The Company
reserves the right to cancel orders and/or to return products that do not
conform to the final agreements.
10.6
Proposals that do not include all of the items detailed in Section 9.0 shall be
considered incomplete and may not be evaluated.
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10.7
If the information submitted in the proposal is not in compliance with this
specification, and/or is not indicated on the list of exceptions, the proposal
will be deemed invalid and may not be evaluated.
10.8
When evaluating transformer losses, the dollar assessment for no-load and
load losses listed in the “Invitation to Bid” shall be used in the economic
evaluation of the Manufacturer’s proposals. No credit shall be provided for
actual loss values, which are less than guaranteed. The manufacturer shall
pay to the Company the amount by which the value of the actual losses
exceeds guaranteed losses in accordance with the dollar penalties quoted
in the “Invitation to Bid.”
10.9
Only 5% of the quantity of units ordered for each line item with actual
losses exceeding guaranteed losses will be accepted. All other units
exceeding guaranteed losses shall be rejected and returned to the
manufacturer for replacement with new units that meet guaranteed losses.
10.10 Satisfaction with the performance of equipment, timely deliveries and
response to issues during previous and/or current contract shall be used in
the evaluation of the bids by the Company as prescribed in the RFQ
Request to Bid issued by the Purchasing Department.
11.0
AWARDING OF CONTRACTS
11.1
The Purchasing Department takes the lead to open the bids, and together
with the technical evaluation ranking may award single or multiple contracts
depending on business requirements.
11.2
Once the contract has been awarded, the manufacturer must contact the
Lead Engineers of both CECONY and O&RU for a joint kickoff meeting.
11.2.1 The manufacturer must obtain a written approval on the final
design before building the prototype.
11.2.2 Once the prototype is built and delivered, the manufacturer must
obtain a written approval on the prototype before moving forward
to the production phase.
11.2.3 The manufacturer must notify in writing the Lead Engineers of
CECONY and O&RU as well as the Purchasing Department, in
advance of any design or material changes to the equipment. The
manufacturer shall not proceed with the changes or delivery of the
equipment unless a written approval has been issued by the Lead
Engineers.
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11.2.4 The Company reserves the right to cancel orders and/or terminate
the contract of a manufacturer who violates any of the
aforementioned requirements. The manufacturer will be held liable
for any cost incurred such as, and not limited to, removal and
installation of equipment, shipping, handling and storage costs,
etc.
12.0
PURCHASE ORDERS
12.1
The manufacturer shall submit drawings to CECONY or O&RU for approval
within 4 (four) weeks after a Purchase Order has been received. These
drawings shall include changes requested on the previous submittal and
clearly indicate by encirclement and revision notes and numbers any
changes made (under this current edition of the specification) in the
drawings since the last approval was obtained.
12.2
Drawings requirements
12.3
Specification
EO–5015
Filing Information
12.2.1
Detailed outline drawings showing
• Weight of unit
• Overall height
• Maximum tank overall diameter including cooling fins/radiators
(if existing) at all locations.
• Dimension from top of HV bushing to top mounting bolt
• Distance between two pole mounting bolts
12.2.2
Bushing details (high and low voltage)
12.2.3
Nameplate drawing
12.2.4
Schematic or wiring diagrams showing all connections (for record
only)
12.2.5
All other drawings necessary to completely illustrate the equipment
furnished.
These drawings shall be in accordance with all final agreements between
the Purchase Order issuer (Con Edison or O&RU) and the manufacturer.
Approval of these drawings shall be obtained from the Purchase Order
issuer (Con Edison or O&RU), in writing, before proceeding. Approval of
drawings does not relieve the manufacturer of its responsibilities under the
contract.
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12.4
The manufacturer shall submit drawings for approval before fabrication
starts. After drawing approvals, the manufacturer shall submit drawings
(with the purchase order issuer’s comments incorporated) in PDF format.
12.5
The drawings shall contain all general arrangement and detailed
dimensional drawings, schematics and wiring diagrams necessary to
completely illustrate the equipment being furnished. These drawings and
diagrams shall strictly be in accordance with the final arrangement of the
equipment. The transmittal of these drawings for review shall be made
directly to the Lead Engineers of Distribution Engineering Department of
both CECONY and O&RU.
12.6
During the term of the order, the manufacturer must obtain written approval
from the Company (Distribution Engineering Department) of any intended
changes to the design, including changes in materials, which were
previously approved. Any drawings affected shall be resubmitted for
approval with revision numbers, notes placed in the revision column, and
pencil encirclement of the changed areas. These drawings shall be
submitted two (2) weeks after the verbal order, and approval must be
obtained before proceeding with the changes.
12.7
Modification Of Design
12.7.1
From the first unit to the last unit manufactured in the same
contract, all units shall be identical, unless Con Ed/O&R directs the
Manufacturer to modify the design. Modifications include any and
all alterations, additions, deletions, or process changes. However,
if the Manufacturer proposes a change, it shall be submitted for
approval to Con Ed and O&RU, with reasons thereof, prior to
proceeding. Con Ed and O&RU will evaluate the request and
reserves the right to decline proposed change.
12.7.2 This requirement applies also to all processes involved in
manufacturing, assembly techniques and sequences, and test
(QA/QC), by the Manufacturer or the Manufacturer’s
subcontractors or suppliers. Since changing the process presents
a potential change in product performance, proposed changes in
processes over the contract period requires notification to Con Ed
and O&RU for approval. One example considered a process
change is a where a particular weld procedure is intended to be
revised - even though no change in component or assembly
design is involved.
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12.7.3 Changes in material or labor supply sources (subcontractors,
outsourcing) by the Manufacturer, or changes in locations where
manufacturing takes place, are to be made known to Con Ed and
O&RU. Con Ed and O&R will evaluate and determine if requalifying is called for, or other requirements.
13.0
14.0
INSPECTIONS AND TESTS
13.1
The manufacturer shall be responsible for sound engineering practices and
the safety and quality of products to insure uniformity and compliance with
all applicable specifications and industrial standards.
13.2
The manufacturer shall be responsible for all required inspections and
electrical tests in accordance with C57 Test Code Series of ANSI and the
TR-1 Series of EEI-NEMA Standards.
13.3
In addition, the Purchase Order issuer (Con Edison or O&RU) reserves the
right to witness any of these inspections and tests to assure conformity with
the requirements.
13.4
Access to all manufacturing and testing facilities shall be granted to the
Con Edison or O&RU representative at all reasonable times. Failure of the
Con Edison or O&RU representative to call attention to any defect in
material or workmanship shall not relieve the manufacturer of its
responsibility.
13.5
The purchase order issuer (Con Edison or O&RU) reserves the right to
reject all transformers, if our own test findings indicate that the
manufacturer doesn’t meet the requirements as stated in this proposal.
Removal and transportation costs shall be paid by the manufacturer.
CERTIFIED TEST REPORTS
14.1
As stated in Section 2.2 of this specification, all tests performed on these
transformers shall be in accordance with the C57 Test Code Series of the
ANSI and the TR-1 Series of EEI-NEMA Standards.
14.2
The manufacturer shall furnish within two weeks of each shipment the
certified test reports of unit, as measured on the production line for each
transformer by serial number, that shall include these:
14.2.1 Values of no load losses in watts.
14.2.2 Values of load losses in watts
14.2.3 Values of the exciting current in amps
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14.2.4 Percent (%) impedance (corrected to 85oC), R and X values
15.0
16.0
14.3
A certification that each transformer (listed by serial number) supplied,
contains no detectable levels of Polychlorinated Biphenyls (PCB’s) when
tested in accordance with the latest revision of either ASTM D4059-83,
"Analysis of PCB’s in Mineral Insulating Oils By Gas Chromatography” or
Reference Method 8082 in SW-846, “Test Methods for Evaluating Solid
Waste.” A detectable concentration is defined as greater than or equal to
1.0ppm.
14.4
A copy of this certification shall be sent electronically to each of the
responsible Engineers in Distribution Engineering Departments of
CECONY and O&RU.
COMPANY INSPECTIONS AND TESTS
15.1
The Company reserves the right to make its individual (i.e. CECONY or
O&RU) acceptance tests on all transformers. These tests will be made in
accordance with the ANSI and EEI-NEMA Standards.
15.2
Both CECONY and O&RU reserve the right to reject all transformers if
individual test findings indicate that the equipment delivered by the
manufacturer does not meet the requirements stated in the proposal.
15.3
Failure of both or either utility to call the attention of the manufacturer to
any defect in material or workmanship shall not relieve the manufacturer of
any responsibility.
DELIVERY WARRANTY AND UNIT RETURNED UNDER WARRANTY
16.1
All the transformers manufactured and delivered to CECONY and O&RU
under this specification shall carry a warranty period of eighteen months
(18) from delivery or twelve months (12) from the date of installation,
whichever comes first.
16.2
CECONY and O&RU reserve the right to return to the manufacturer all
transformers with tested values exceeding any of the guaranteed maximum
values or failing to meet the guaranteed minimum values listed by the
manufacturer in his proposal.
16.3
The manufacturer shall furnish a report for each failed transformer returned
for repairs or replacement during the manufacturer’s warranty period. The
report shall clearly indicate the cause of failure. If the cause of failure is
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due to manufacturer’s design or manufacturing defects and it is deemed
necessary to remove all transformers of the same design or production
lots, which are already installed on the CECONY or O&RU distribution
system, then the manufacturer shall bear all cost associated with
installation, removal, and transportation of such transformers.
17.0
18.0
SHIPPING AND TRANSPORTATION
17.1
All transformers shall be shipped on individual storing pallets, which is
properly designed for forklift entry and for the weight of the unit, and can be
stored outdoors without damage.
17.2
All transformers shall be delivered on an open flatbed trailer and shall be
side loaded.
17.3
Manufacturers must provide forty-eight (48) hours advance notice to
CECONY and O&RU prior to the delivery of transformers sized 500 KVA or
larger.
REFERENCES
The following drawings and standards have been referenced within this
specification.
Number
Title
EO-10812
EO-3101
M-11-80
328371
Insulating Oil (Purchase Recommendation)
PURCHASE REQUIREMENT FOR EQUIPMENT SAFETY
LABELS OR WARNING TAGS WITH TEMPLATES AND
MOUNTING LOCATION REQUIREMENTS
O&RU Material Standard
General Outline For Three Phase Padmount Transformers
328372
Pad Dimensions and Three Phase Padmount Transformer
328373
Interior Arrangement For Three Phase Padmount
Transformer
Bracket Assembly For Combination Feeder And Bank Tag
Holder
Padmount Transformer Low Voltage Terminal
328374
349474
19.0
APPENDIX
Appendix A - O&RU Padmount Transformer Installations
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20.0
ATTACHMENTS
Attachment 1 – Three Phase Pad Mount Transformer Guarantee Report (3
Sections)
Attachment 2 - Check List (1 Page)
Drawing Numbers: 328371, 328372, 328373, 328374 and 349474
Kevin Oehlmann (Signature on file)
Kevin Oehlmann (Con Edison)
Section Manager
Overhead Standards & Planning
Distribution Engineering Department
Wayne Banker (Signature on file)
Wayne Banker (Orange & Rockland)
Chief Engineer
Distribution Engineering Department
Ebrima S. Cham
Chris Gonzales
Revision 21:
Section 2.8: Feed-thru Loadbreak insert for CECONY units
Section 3.6.4: Clarified that the 8.3 KV setting is only for
13.2/4.16 kV dual voltage units
Section 3.6.5: Fusing schedules revised.
Removed sizes 750 KVA & 1000KVA from Table 3.4.6 and
sizes 1000KVA and 1500KVA from Table 3.4.8 for O&RU
Section 4.1.3: Added reference to Drawing E-O –13775 B
Added Eaton to Cooper-Eaton/Cooper.
Sections 4.3.1 and 7.1: Changed liquid level gauge from dial
to float type. Gauge in required to be installed in HV
compartment per Section 7.1
Section 4.4.1: changed high Eaton/Coopers voltage bushing
catalog number.
Section 4.4.6: Changed size from 2000 kVA to 2500 kVA
Section 4.6.2: Changed loadbreak switch from 4-position to
2-position type.
Section 4.7.1 Added parking stand labelling requirement.
Sections 6.1.1 and 6.1.2: Added labelling requirements.
Section 6.2: added O7RU Stenciling requirements
Section 7.7: Added IFD requirement and removed PRV.
Section 7.8:Added Feed-thru loadbreak inserts table.
Section 12.7: Added requirements for design changes.
Section 17.2: Specifies transformer delivery mode
Attached Drawing Numbers: 328371, 328372, 328373,
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Purchase and Test
Manual No. 6, Section
25
Transformer and
Accessories
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328374 and 349474.
APPENDIX A
O&RU Padmount Transformer Installations
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ATTACHMENT1
THREE PHASE PADMOUNT TRANSFORMER GUARANTEE REPORT
MANUFACTURER
DATE
INVITATION TO BID NO
PREPARED BY
SECTION 1 - GENERAL INFORMATION
NOTE:
If information varies with size or type of transformer please indicate:
1.
Core Material:
2.
Coil Material:
3.
Turn Insulation: Primary Type
Secondary Type
4.
Layer Insulation: Primary Type
Secondary Type
5.
Type of Winding: (Hand, machine)
6.
Insulating Oil:
Primary
Secondary
Type (Mfr. & Designation)
Refining Method
Additives used
Dielectric strength
Power factor
7.
Material:
Cover, Type
Tank, Type
Radiators, Type
8.
Core and Coil:
Drying Time
Temperature
Cooling Time before
Immersion in oil
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(
)% by Weight
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9.
Enclosure Coating System: Type process
Surface Prep. Method
Type primer Coating Method
Number of coats
Min. Dry thickness per coat
Curing/Drying Time per coat
Temperature
Min. Total thickness of prime
Finish Coat Color (Indicate Which)
Munsell 5.5 Grey 2.76/2.1 or
Munsell 7 Grey 3.29/1.5
Finish Coat Type
Coating Method
Number coats
Min. Dry thickness per coat
Curing/Drying Time per coat
Temperature
Min. Total thickness of finish coat
Does the coating system meet ANSI
C57.12.28-1988, Section 5?
Yes
No
10. Bushing Material:
Primary
Secondary
11. Primary Connector:
Material
Tests
12. Secondary Connector:
Material
Tests
(List & Conductivity)
13. Gasket Material:
Cover
Secondary Bushings
14. Nameplate:
Material
_________
15. List other Important Information Below:
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16. Are there any exceptions to this specification? ____Yes ____ No
If yes, state total number of exceptions _______ and list below or attach list. If no,
manufacturer is advised he is totally responsible for, and obligated to provide, all the
items listed in this specification for which no exceptions are claimed. Only
exceptions documented as part of this guarantee report will be deemed valid
for consideration.
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SECTION 2 - QUALITY CONTROL TESTS DURING PRODUCTION
MANUFACTURER
DATE
INVITATION TO BID NO
PREPARED BY
Note: If information varies with size or type of transformer, please indicate.
1.
2.
3.
4.
5.
6.
TEST
Core Wire Tests:
a. Conductor cross section
b. Insulation thickness
c. Dielectric strength
__________
__________
__________
Insulating Oil:
a. Dielectric strength
b. Power factor
__________
__________
Core Assembly:
a. Core loss test
__________
Core and Coil Tests:
a. Ratio test
b. Polarity test
c. Core loss test
d. Copper/Aluminum loss test
e. Power factor test
f. Exciting current test
g. Impedance test
__________
__________
__________
__________
__________
__________
__________
Gasket Material:
a. Uniformity
__________
Tank, Enclosure & Radiator Material:
a. Uniformity
b. Weld areas
c. Paint thickness
__________
__________
__________
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7.
List all other quality control tests during production and % tested:
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SECTION 3 - QUALITY CONTROL TESTS: COMPLETED TRANSFORMER
MANUFACTURER
DATE
INVITATION TO BID NO
PREPARED BY
Note: If information varies with size or type of transformer, please indicate.
TEST
% TESTED
1.
High voltage impulse
__________
2.
Low voltage impulse
__________
3.
High voltage applied potential
__________
4.
Low voltage applied potential
__________
5.
Induced potential
__________
6.
Oil Sampling:
a. Dielectric test
b. Power factor test
__________
__________
Temperature, use:
a. Rated load
b. 140% or 150% load, as applic.
__________
__________
Short circuit test:
a. 25 X for 2 seconds
b. Other
__________
__________
7.
8.
9.
Leak Test:
Describe method: __________________________
10. Welding Check:
Describe method:__________________________
__________________________
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1966-2015 Consolidated Edison Co. of New York, Inc.
Manual No. 6
Paper copies of procedures and instructions are uncontrolled and therefore may be outdated. Please consult Distribution Engineering Intranet Site
Distribution Engineering or http://distribution, for the current version prior to use.
11. Noise level check
__________
12. Lifting lug strength check
__________
13. Paint quality tests per ANSI C57.12.28-1988, Sect. 5.4.1 to 5.4.7:
Describe methods used:______________________ _____________________
14. Oil level check
__________
15. Ratio test
__________
16. Core loss test
__________
17. Copper/Aluminum loss test
__________
18. Power factor test
__________
19. Exciting current test
__________
20. Impedance test
__________
21. Polarity check
__________
22. List all other quality control tests on completed units and % tested:
___________________________________________________________
___________________________________________________________
Specification
EO–5015
Filing Information
Revision
22
Rev Date
7/ 2015
Purchase and Test
Effective
Date
8/31/2015
Copyright Information
Page
46/47
1966-2015 Consolidated Edison Co. of New York, Inc.
Manual No. 6
Paper copies of procedures and instructions are uncontrolled and therefore may be outdated. Please consult Distribution Engineering Intranet Site
Distribution Engineering or http://distribution, for the current version prior to use.
Attachment 2
CHECK LIST FOR PROPOSAL REQUIREMENTS
[ ] Transformer Guarantee Report (Attachment 1, Sections 1 thru 3)
[ ] List of exceptions
[ ] Outline drawing of transformer
[ ] Nameplate drawing
[ ] Bushing detail drawing
[ ] Schematic and wiring drawing showing all connections
[ ] Detail information on Tap Changer, Dual Voltage and
Loadbreak switches (when specified)
This checklist is provided to help insure your proposal is complete. Incomplete
proposals may not be evaluated.
Specification
EO–5015
Filing Information
Revision
22
Rev Date
7/ 2015
Purchase and Test
Effective
Date
8/31/2015
Copyright Information
Page
47/47
1966-2015 Consolidated Edison Co. of New York, Inc.
Manual No. 6
Paper copies of procedures and instructions are uncontrolled and therefore may be outdated. Please consult Distribution Engineering Intranet Site
Distribution Engineering or http://distribution, for the current version prior to use.