BID ITEM 100 - 69kV CIRCUIT SWITCHERS
For
City of City of Celina, Ohio
I. GENERAL SCOPE OF WORK
1.1.
The Manufacturer shall design, fabricate, test and deliver to the j obsite two (2) 69 kY,
1200 Amp SF6 circuit switchers. The circuit switchers shall be vertically mounted
and are to include a 1200 Amp, electrically operated air break sw itches for isolation.
The two (2) SF6 circuit sw itchers wi ll be installed in an outdoor substation known as
Staeger Road Substation, Celina, Ohio.
1.2.
The work site (delivery location) is near the intersection of Staeger Road and
Havemann Road, Celina, Ohio
2. OWN ER AND ENGINEER AND MANUFACTURER (CONTRACTOR)
2.1.
Owner
City of Cel ina, Ohio
426 West Market Street
Celina, Ohio 45822-2127
2.2.
Engineer
MK Power Solutions, Inc.
1900 Manor Hill Rd.
Findlay, OH 45480
4 19-422-1224
419-422-5876 Fax
Attn: Michae l E. Kiser, P.E.
mk@ rnkpowersolutions.com
2.3.
Contractor: The term Contractor and Manufacturer sha ll be interchangeable for this
specification. The contractor or Manufacturer shall be the person, firm or corporation
w ith whom the Owner executes an agreement.
3. SHIPPING
3.1.
The outdoor power circuit switchers shall be shipped fully assembled to the job site by
truck. Switcher shall be shipped in a condition suitable to with stand shipment and any
required storage at thejobsite. The electrical and mechanical integrity of the
equ ipment as dem onstrated by factory tests shall be maintained during shipment to
and storage at the jobs ite.
3.2.
SF6 gas in su lated circuit switchers shall be shipped to the j obsite partially filled with
Spec ification 100-1
SF6 gas. A sufficient quantity of bottled SF6 gas shall be delivered to the jobsite to
fill the sw itchers to the recommended gas pressure. The Owner shall be respon sible
for gas filling the ci rcuit switcher.
4. SHOP DRAWINGS AND SUBMITTAL DATA:
4.1.
The Manufacturer shall submit shop drawings and equipment data required including
but not limited to:
4.1.1
Ladder schematic diagrams and elementary wiring and connection diagrams
shall be prepared for the circuit sw itchers furni shed, show ing internal
equipment wire terminations, and terminations for fi e ld wiring.
4. 1.2
Performance c urves shall be submitted for each ratio and type of current
transformer.
4. 1.3
Detailed installation and maintenance instruction books .
4. 1.4
Certified test report of the Manufacturer's standard producti on tests.
4.1.5
Detailed dimensional drawings of ci rcu it switchers showing installation and
maintenance clearance.
4.2.
One ( I) set of approval drawings sha ll be submitted to the Owner, and two (2) sets of
approval drawings sha ll be submitted to the Engineer. One (I) CD-ROM conta ining
the approval drawings and information shall be submitted to the Engineer.
4.3.
Three (3) sets of final drawings, manuals, information and one ( I) CD-ROM shall be
submitted to the Owner. One (1) set of final drawings, manual s, information and one
(I) CD-ROM shall be submitted to the Engineer.
5. WARRA NTY AND ACCE PTANCE:
5.1.
The Manufacturer shall warrant that the equipment furnished under this Specification
shall be free from defects in material and workmanship and agrees to repair or replace
any unit or component that is unsuitable for operation or fai ls in operation during
norma l and proper use. This warranty will be in effect for a period of five (5) years
from the date of purchase. If specific equipment warranties are for a longer period of
tim e than the 5 year warranty requested, the longer warranty sha ll be provided per the
specific manufacturer warranty.
6. ACCEPTABL E MANUFACTURERS
Specification 100-2
6.1 .
Acceptable circuit sw itcher manufacturers shall be Alstom or approved equa l. The
circuit switchers will be installed in place of two existing horizontal switchers. This
requ ires that the mounting pedestal be manufactured to existing pedestal spaci ng and
bo lt-hole patterns.
7. EQU IPMENT AND SERVI CES TO BE FURNISHED BY MANUFACTU RE R
7. 1.
The Manufacturer shall furnish a ll labor, materials, tools and equipment necessary for
and incidental to manufacturing of thi s project as specified herein. The Manufacturer
is to assume complete respons ibility for the design, fabrication , shop assem bly and
delivery of the complete system to satisfy the requirements of this specification. All
design analys is necessary to assure reliable operation in conformance with the
specification requirements are the responsibility of the Manufacturer, a lthough the
Engineer may comment on these designs in the interest of optimizing performance and
operati ons.
7.2.
The work shall include everything necessary to fini sh the work properl y, not
withstanding that every item of labor or materials or accessories required to make the
product complete may not be spec ifica ll y mentioned.
7.3.
All components shall be shop assembled as much as possible to limit the amount of
field assembly.
7.4.
T he Manufacturer shall furnish all items necessary for a comp lete installation of the
power circuit switchers and auxil iaries specified herein. Lack of spec ific reference to
an y item necessary for the proper functioning of the equipment covered herei n will not
relieve the Manufacturer of the responsibi lity for prov iding that item.
7.5.
As part of the Manufacturer's obli gation under the proceeding paragraph,
Manufacturer shall furnish the following miscellaneous and supplementary items:
Spec ifi cati on 100-3
7.5.1
Two (2) 69 kV Outdoor SF6 Circuit Switchers as specified each with the
following:
7.5.1.1.
Integral 69 kV, 1200 Amp Motor Operated Group Operated Air
Break Switch (MOAB) . SIDE BREAK or VERTICAL BREAK.
7.5.1.2.
48 VDC sw itcher close and trip controls, with dual, independent trip
coils, and loss of DC voltage alarms.
7.5.1.3.
Switcher mou nted contro l cabinet with li ght and switch, GFCI
receptacle, and 240 VAC single phase thermostatica lly controlled
condensation heaters .
7.5 .1.4.
Local sw itcher open/close switch located inside of the control cabinet
with operating motor if required.
7.5.1.5.
Gas density monitoring system for the three (3) poles with alarms for
low density and lockout of the switcher.
7.5.1.6.
Pressure gauges and va lves .
7.5.1.7.
Operations counter.
7.5.1.8.
Mechanica l position indicator (Open/Closed)
7.5.1.9.
Skid grounding pads (stainless steel)
7.5 .1 . 10. Ten pole aux iliary switch with spare contacts
7.5.1.11. Provisions for lifting
7.5. 1.12. Four (4) spare fuse s for each type and size of AC and DC fuses
required
7.5.1.13. Manual hand crank to manually charge the spring
7.5.1.14. Adapter plate for time travel testing
7.5.1.15. Six (6) aluminum a lloy terminal pads for termination to aluminum
NEMA 4 -ho le pad connectors.
7.5.1. 16. Comm on mounting pedestal/support structure for gas system,
interrupters and controls per Owner's dimensional requirements.
8. C IRCU IT SWITCHER RAT INGS :
8.1.
T he outdoor SF6 circuit switchers sha ll be rated as follows:
Specifi cation 100-4
8.1.1
Nominal Voltage Class: 69 kV
8.1.2
Rated Maximum Vo ltage: 72.5 kV
8.1.3
Basic Insulation Level: 350 kV
8.104
Rated Continuous Current, 60 Cycles: 1200 amp minimum
8.1.5
Rated Short C ircuit Current at Rated Max. KV: 40,000 amps minimum RMS
symmetrical.
8.1.6
Interrupting Time: 3 Cycles maxi mum
8.1.7
Close and Latch Capability: As provided by the manu facturer
8.1.8
Ambient air temperature range without tank heaters: -40°C up to +50°C
9. DESIGN - CIRCUIT SWITCHERS
9.1.
Gas Circuit Switchers: The manufacturer shall design, manufacture, and test the three
pole, gang operated horizonta l interrupter outdoor circuit switcher with integral
manual operated center break disconnect switches (i.e. vertical "candlestick"
configuration).
9.2.
MOAB Switch: An e lectr ica lly operated, 138 kV, 1200 Amp GOAB sha ll be mounted
in series with the circuit sw itcher and shall be physicall y connected to the interrupter
through means of buswork or cable bus and connectors. SIDE BREAK OR
VERTICAL BREAK.
9.3.
Interrupters: The ci rcuit switcher poles shall include the breaking unit, the porcelain
support insulator and the pole linkage housing. The three poles of the switcher are to
be mounted on a common support frame with the operating mechani sm arranged
below the same frame. The three switcher poles may have a common gas system.
904.
Bases: The circuit switcher bases shall be constructed of rectangular stee l tube to
provide rigid stability and shall be hot dipped galvanized after fabrication. The
rectangular steel tubes sha ll be enclosed on the ends to birdproofthe bases aga inst
nesting. Open style bases are not acceptable.
9.4. 1 Owner' s Dimensional Requirements: The support pedestal provided by the
Manufacturer shall have two support column s with an upper co lumn for
sup port of the switcher poles. The following critical dimensions sha ll be
utilized for construction of the pedestal:
Height: Per Manufacturers' Standard
Center-to-Center Co lumns: 96"
Column Bolt Ho le Pattern: Square, 20" Spacing
Specification 100-5
Diameter of Anchor Bolts: 1.25"
Interrupter Phase Spacing: 84"
Isolation Sw itch Phase Spacing: Per Manufacturer
SEE ATTACHED DRAWINGS "FD-Ol" FOR COMPLETE
DETAILS OF THE EXISTING FOUNDATIONS THAT THESE
SWITCHERS MUST BE INSTALLED UPON.
9.5 .
Ground ing Pads: Each gas outdoor circuit switcher shall have two NEMA dri lled
stainless steel ground pad s on the switcher support steel. One pad shall be located on
each side at oppos ite corners on the lower portion of the support structure. Grounding
pads shall be located so as not to interfere with anchor bolts, lifting lugs or jacking
provIsions.
9.6.
Painting: Circuit switcher tanks, structure supports, housings, and enclosures shall be
cleaned and treated and shall be painted using the manufacturers standard fini sh
process. Finish color shall be ANSI 70, sky gray. Switchers without painted
components are acceptable if finishes of steel members are galvanized and/or stain less
steel. The switcher manufactu rer shall prov ide a minimum of one quart of touch up
paint for switchers that are pai nted.
10. SWITCHER OPERATOR AND CONTROLS:
10.1 . Operator Charging Mechani sm: Each gas insulated outdoor power circuit switcher
shall have a spring stored energy operating mechanism for closing or tripping the
sw itcher contacts. Stored energy methods shall be the manufacturers standard design
in using springs and mechanism shall be capab le of a duty cycle of 0-0.3 seconds-CO·
15 seconds-CO. Motors for stored energy charging sha ll be rated for 48 VDC power
service. Motors shall have automatic reset thermal overloads. 48 VDC motors shall
be provided with short circuit protection utilizing breakers or fuses. Fuses shall have
knife type cutout switches or insulated pullout fuse holders.
10.2. Controls: T he switcher operator control system shall consist ofa closing so lenoid,
anti -pump or closing cut-off relay, dual trip coi l scheme, low gas pressure switches
and relays, charging motor contactors and cutoff limit switches, pressure gauges and
valves, and all necessary auxil iary mechanically and electrica lly operated switches or
contacts required for operation, control or alarm . Breaker control s shall be suitable for
48 VDC operation from the stati on battery system. As a minimum, three separate 48
VDC control circuits shall be provided : One for the closing coi l circuit, one for trip
coil circu it, and one for the backup trip co il circuit. Each 48 VDC circuit shall be
separately fu sed and prov ided with knife type iso lation sw itches or insulated pu llout
fu se holders. Each 48 VDC circuit shall be provided with a loss of DC voltage alarm
relay with isolated output alarm contacts for connection to a remote alarm system.
Breaker operators shall be electrically and mechanically trip free.
10.3 . Contro l Cabinet: The outdoor power circuit switcher sha ll be furnished with a NEMA
Specification 100-6
3R stainless stee l or a luminum contro l cabinet for enclosing the switcher control and
alarm ci rc uitry, the stored energy equipment and circuitry, current transformer wiring
connections (for circuit breakers only), field wiring connections, and mi sce llaneous
auxiliary devices. The control cabinet shall be mounted on the c ircuit switcher tank or
mounting pedestal and shall be access ible from grade. Cab inets shall be gasketed,
weatherproof outdoor design with a hinged door. Owner's conduit w ill enter fro m the
bottom. Bottom of the cabinet sha ll have a removable panel , to facilitate field conduit
entrance. Cabinet arrangement shall allow unobstructed access to a ll equipment
without interference with any other equipment or field wiring connections. Doors
shall have 3 point latch handle mechani sms, shall open wide giving full access to
interior and shall have provisions for padlocking. Doors and swing panels shall have
stops to prevent accidental closi ng. A print pocket shall be included on the interior of
the main enclosure door, for storage ofa instruction manual and re lated drawings.
10.3. 1 A ll relays, switches, contactors, and other devices shall be identified by plastic
engraved nameplates.
10.3.2 Thermostatically contro lled electric heaters shall be furnished to prevent
condensation. The heater shall be rated at 240 volts, I phase ac and sha ll be
furnished with individua l fu ses . Heaters shall be shielded to prevent direct
contact.
10.3.3 Internal lighting shall be provided for the cabinets and sha ll be controlled from
a switch mounted in the contro l cabi net.
10.3.4 A 120 volt, 60 Hz, 15 amp duplex GFC I receptacle shall be prov ided in each
control cabinet.
10.3.5 A gas density monitoring system: Located outside the contro l housing, subject
to ambient conditions. The monitoring system shall be pressure sensitive,
temperature compensated and have two (2) contact settings for failing dens ity.
One setting sha ll be for alarm purposes and shall have one form "c" contact for
customer use. The second setting shall be for lockout and shall have one form
"c" contact for customer indication of lockout.
I 0.3.6 Wiring: The control cab inet sha ll be wired with SIS type switchboard w ire,
minimum # 14 A WG copper, 600 volt 90°C, furnished with wire markers at
each termination. Current tran sformer leads shall be # lOA WG. All control
wiring shall terminate with ring type insulated crimp connectors. Switchboard
type termina l blocks sha ll be provided and located in the control cab inet fo r
internal control w iring and incoming field wiring. Terminal blocks shall be
rated 600 volt, 30 amp, and have binding screw type terminals capable of
termi nating 2, # lO A WG copper w ires per terminal. Terminal blocks sha ll be
permanentl y marked at each termination. A minimum of 12 spare terminal
blocks shall be provided in the switcher control cabi net. Wire markers and
terminal block markers sha ll be numbered to match the switcher manufacturers
detailed connection diagram s.
Spec ification 100-7
10.3.7 Alarms: One form "c" electrically independent contact shall be furnished for
each alarm condition. Alarm contacts shall be rated a minimum 2 amps at 120
VAC. Each contact shall be wired to iso late terminal points in the control
cabinet for use in the Owner's alarm system. The following conditions shall be
alarmed:
10.3.7.1. Loss of DC control voltage (one common alarm required per
switcher, each DC circuit to be monitored).
10.3.7.2. Loss of AC control voltage
10.3.7.3. Spring Motor Charge Alarm
10.3.7.4. Low gas density
10.3.7.5. Lockout of switcher due to low gas density
I I. FACTORY TESTS:
11.1. The power circuit switchers shall be completely assembled to determine if all parts fit
properly, and given the manufacturer's standard production and quality control tests in
accordance with the latest applicable ANSI, IEEE, and NEMA Standards. Production
or component tests and checks shall include but not be limited to the following:
I 1.1.1 Accessory, control alarm, and current transformer circuit wiring shall be
inspected and tested for correct connections and verified to be free from
unintentional shorts of grounds.
11.1.2 Current transformer tests (ratio, polarity and one minute dielectric tests).
11.1.3 Gas container tests (ASM E certification).
I 1.1.4 Pressure tests.
I 1.1.5 Leakage tests.
I 1.1.6 Bushing tests.
11.1.7 Clearance and mechanical adjustment tests.
11.1.8 Mechanical operation tests.
11.1.9 Timing tests.
END OF SECTION
Specification 100-8
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