Under-Oil
ARRESTERS
Page 1 | July 2016
WARRANTY
HPS warrants to Buyer that the products sold will be free of defects in workmanship or material for a period
of one (1) year (or as otherwise specified) from the date of original shipment by HPS when stored, installed,
operated or maintained in accordance with recommendations of HPS and standard industry practice and when
used under proper and normal use. HPS shall in no event be responsible or liable for modifications, alterations,
misapplication or repairs made to its products by Buyer or others, or for damage caused thereto by negligence,
accident or improper use by Buyer or others. This warranty does not include reimbursement for the expenses of
labor, transportation, removal or reinstallation of the products. This warranty shall run only to the first Buyer
of a product from HPS, from HPS’ Buyer, or from an original equipment manufacturer reselling HPS’ product,
and is non-assignable and non-transferable and shall be of no force and effect if asserted by any person other
than such first Buyer.
APPLICATION: HPS does not warrant the accuracy of and results from product or system performance
recommendations resulting from any engineering analysis or study. This applies regardless of whether a charge
is made for the recommendation, or if it is provided free of charge. Responsibility for selection of the proper
product of application rests solely with the Buyer. In the event of errors or inaccuracies determined to be caused
by HPS, its liability will be limited to the re- performance of any such analysis or study.
BUYER INSPECTIONS: Tests, inspections and acceptance of all material must be made at the factory. Buyer’s
inspectors are welcome at the factories and are provided with the necessary facilities for carrying out their
work. Name and phone number of who should be contacted for inspection should be given to HPS no later
than two weeks prior to scheduled shipment date.
LIMITED WARRANTY AND LIMITATION OF LIABILITY
IN NO EVENT, WHETHER AS A RESULT OF BREACH OF CONTRACT OR WARRANTY OR ALLEGED NEGLIGENCE,
SHALL HPS BE LIABLE FOR SPECIAL OR CONSEQUENTIAL DAMAGES INCLUDING, BUT NOT LIMITED TO, LOSS OF
PROFITS OR REVENUE, LOSS OF USE OF THE EQUIPMENT OR ANY ASSOCIATED EQUIPMENT, LOSS OF CAPITAL,
COST OF SUBSTITUTE EQUIPMENT, FACILITIES OR SERVICES, DOWNTIME COSTS, OR CLAIMS OF THIRD PARTIES
OF THE BUYER FOR SUCH DAMAGES. Any claim by Buyer for breach of the foregoing warranty shall be deemed
waived by Buyer unless submitted to HPS in writing within thirty (30) days from the date Buyer discovered, or
by reasonable inspection should have discovered, the alleged breach. Any cause of action for breach of the
foregoing warranty shall be brought within one year after the cause of action has accrued.
1850 Richland Avenue, East, Aiken, SC 29801
HubbellPowerSystems.com
1.573.682.5521 o
1.573.682.8714 f
hpsliterature@hubbell.com
NOTE: Because Hubbell Power Systems Inc., has a policy of
continuous product improvement, we reserve the right to change
design and specifications without notice.
Copyright 2016 Hubbell Power Systems Inc./Ohio Brass
Page 2 | July 2016
General
Production Tests
The HPS under-oil distribution arrester is designed
to limit surge voltage by discharging the surge
current to ground. The arrester is designed for
under-oil applications. It will meet or exceed the
application requirements of IEEE C62.11 and IEC
60099-4 standards for metal oxide surge arresters
for AC Power Circuits.
A complete production test program ensures the under
oil design satisfies the IEC 60099-4 requirements, as well
as the IEEE C62.11 requirements. HPS maintains stringent
testing controls in accordance with IEC 60099-4 & IEEE
C62.11 to guarantee that the customer receives consistent
quality with every product. HPS also performs various
Quality Assurance tests on every batch of metal oxide
varistor (MOV) blocks. The routine tests listed below, in
addition to the exceptionally controlled manufacturing
processes, ensure that HPS products demonstrate a superior
level of quality.
The HPS under-oil arrester is designed to be used
inside a distribution transformer, immersed in an
insulating liquid. The arrester can be used where
the maximum temperature does not exceed 125
°C, and where the weighted average temperature
does not exceed 90 °C.
MOV Disc Routine Tests:
•
The arrester can be mounted inside the distribution
transformer tank in a horizontal or vertical
position. In a vertical-mount position, alongside the
transformer coils, the ejected internal parts will fall
to the bottom of the tank. If the arrester is mounted
above the core and coils, a pressboard (or similar)
shield should be used to prevent ejected parts from
falling into the windings of the transformer.
The transformer should not be tested (impulse or
hipot) with the arrester connected. If the arrester
is connected to the transformer during impulse
test, the arrester will clamp the voltage; thus the
transformer will not be subjected to full test voltage.
If the arrester is connected to the transformer during
hipot test, it is highly probable that the arrester will
be damaged by this overvoltage.
•
•
•
MOV Block Batch QA Tests:
•
•
•
Metal Oxide Varistor
(MOV) Discs
Phenolic
Insulating
Tube
Physical Inspection – Visually performed post grind,
post energy test, and for a final visual inspection.
Rated Energy Test – Procedure confirms the energy
capability of each zinc oxide disc element.
Discharge Voltage Test – Every disc undergoes full
lightning discharge 8/20 current wave impulse to verify
its volt vs. amp characteristics.
Watts Loss Test – Test measures the AC watts loss and
capacitive current characteristics of the disc.
Square Wave Energy Test – Performed on a 5 disc
sample from each batch, this test is performed to
quantify the batch energy capability.
High Current Test – Each 5 disc sample is subjected to
two high current discharges of the same polarity to
ensure high current characteristics.
AC Life Test – The discs are placed under test conditions
for a minimum of 160 hours to verify performance.
Each under oil arrester must pass the following production
tests:
• 100% physical inspection
• 100% reference voltage test
• 100% watts loss at power frequency
Spring
¼-20
UNC
End
Stud
Figure 1 : Cutout Diagram
Page 3 | July 2016
Arrester Care
Normal care taken in handling the arrester will prevent the possibility of damage to the metal-oxide valve
elements. For example, do not allow the arrester to be impacted by, or on, other objects and be shocked
mechanically. The arrester is constructed of materials that have little or no moisture absorbing capacity.
Special precautions are not necessary to prevent the arrester from being exposed to moisture laden air prior
to installation. A normal transformer treat or bake out should be sufficient to remove any moisture which
may have been introduced into the transformer and absorbed by the arrester surfaces. The arrester does not
require testing. No test which applies power-frequency voltage in excess of arrester voltage rating should be
made without consulting Hubbell Power Systems. There is no single field test which will indicate the complete
operating characteristics of the arrester.
Features and Detailed Description
The under-oil arrester, shown in Figure 2. contains
a number of MOV discs mounted securely inside
a phenolic housing. The MOV discs are made by
Hubbell Power Systems in Wadsworth, Ohio. The
arrester is shipped fully assembled. The catalog
number, rating, and maximum continuous
operating voltage (MCOV) capability are identified
on the phenolic housing. Under oil arrester qualifies
for fail “OPEN” per IEEE C62.11 and IEC 60099-4
when the short circuit current exceeds the values
tabulated in Table 2. An arrester fails “OPEN” if,
after the fault current is interrupted by an overcurrent protective device, the resultant arrester is an
open circuit. Tests have indicated that the force of
fragmentation will be damped by the surrounding
insulating liquid, thereby preventing damage to
adjacent components such as core and coils. Table
2 specifies the insulation characteristics and fail
open current rating of the arrester.
Figure 2 : Under-Oil Arrester
Table 1: Under - Oil Arrester Electrical Characteristics
Catalog
Number
Rated
Voltage
Maximum Continuous
Operating Voltage
(MCOV)
221103
221105
221108
221109
221110
221113
221115
221117
221122
221124
kVrms
3.0
6.0
9.0
10.0
12.0
15.0
18.0
21.0
27.0
30.0
kVrms
2.55
5.10
7.65
8.40
10.20
12.70
15.30
17.00
22.00
24.40
Page 4 | July 2016
Maximum
.05µs
Discharge
Voltage
10.0 kA
10.43
20.90
27.71
30.33
36.26
45.70
54.72
61.62
81.35
91.40
Maximum
Switching Surge
Protective Level
0.5 kA
7.87
15.69
23.54
27.07
31.39
39.08
47.09
52.32
67.70
75.09
8/20 μs Lightning Surge
1.5 kA
8.43
16.83
25.24
29.03
33.66
41.91
50.49
56.10
72.59
80.52
3.0 kA
8.88
17.72
26.59
30.57
35.45
44.14
53.17
59.08
76.45
84.80
5.0 kA
9.29
18.54
27.81
31.98
37.08
46.17
55.62
61.80
79.97
88.70
10.0 kA
9.97
19.89
29.84
34.31
39.79
49.54
59.68
66.31
85.81
95.17
20.0 kA
11.04
22.02
33.03
37.98
44.05
54.84
66.06
73.41
94.99
105.36
Table 2: Under - Oil Arrester Characteristics
Catalog
Number
Rated
Voltage
221103
221105
221108
221109
221110
221113
221115
221117
221122
221124
kVrms
3.0
6.0
9.0
10.0
12.0
15.0
18.0
21.0
27.0
30.0
Maximum Continuous
Operating Voltage
(MCOV)
kVrms
2.55
5.10
7.65
8.40
10.20
12.70
15.30
17.00
22.00
24.40
Impulse 1.2/50 full
wave (BIL)
Fail Open Current
Rating
kV crest
75.0
75.0
95.0
95.0
95.0
125.0
125.0
125.0
150.0
150.0
A rms
*
2000
1000
1000
500
500
500
500
500
500
Application
The HPS under-oil arrester
should be installed only on
systems where the power
frequency voltage at the
arrester does not exceed
published maximum continuous
operating voltages (MCOV)
values. MCOV values are shown
in Tables 1 & 2 and are also
marked on the arrester housing.
Standards
HPS under-oil arresters comply with the latest revision of the IEEE C62.11, as well as IEC 60099-4. “Standards
for Metal Oxide Surge Arresters for AC Power Circuits.“
Table 3: Commonly Applied Voltage Ratings of Distribution Arresters
System RMS Voltage (kV)
Nominal Voltage
2.4
4.16Y/2.4
4.16
4.8
6.9
8.32Y/4.8
12Y/6.93
12.47Y/7.2
13.2Y/7.62
13.8Y/7.97
13.8
20.78Y/12
22.86Y/13.2
23.0
24.94Y/14.4
27.6Y/15.93
34.5Y/19.92
Maximum Voltage
Range B
2.54
4.4Y/2.54
4.4
7.26
8.8Y/5.08
12.7/7.33
13.2Y/7.62
13.97Y/8.07
14.52Y/8.38
14.52
22Y/12.7
24.2Y/13.97
24.34
26.4Y/15.24
29.25Y/16.89
36.51Y/21.08
Commonly Applied Arrester Duty-Cycle (MCOV) Voltage Rating (kV) on Distribution Systems
Four-Wire Multigrouned
Neutral WYE
3.0(2.55)
5.08
6.0(5.1)
9.0(7.65)
9.0(7.65) or 10.0(8.4)
10.0(8.4)
10.0(8.4) & 12.0(10.2)
15.0(12.7)
18.0(15.3)
18.0(15.3)
21.0(17)
27.0(22)
Three-Wire Low Impediance
Grounded
6.0(5.1)
9.0(7.65)
12.0(10.2)
15.0(12.7)
15.0(12.7)
15.0(12.7)
21.0(17)
24.0(19.5)
27.0(22)
30.0(24.4)
36.0(29)
Three-Wire High Impediance
Grounded
3.0(2.55)
6.0(5.1)
6.0(5.1)
6.0(5.1)
9.0(7.65)
18.0(15.3)
30.0(24.4)
-
Page 5 | July 2016
Ordering Information
To order a HPS under-oil arrester, please determine the arrester rating depending on the intended application
using Table 3 and specify the correct catalog number from Table 4. Contact your HPS representative for
additional assistance.
Table 5 displays HPS’s offered hardware configurations. Customers are able to select the desired under-oil
arrester by choosing the correct catalog ID number and pairing it with a specific hardware code.
Example: 2211033001 would produce a 3.0kV under-oil arrester with mounting brackets and no lead wires.
Table 4: Under - Oil Dimensional Information
Catalog
Number
221103
221105
221108
221109
221110
221113
221115
221117
221122
221124
Rated
Voltage
kVrms
3.0
6.0
9.0
10.0
12.0
15.0
18.0
21.0
27.0
30.0
Maximum Continuous
Operating Voltage
(MCOV)
kVrms
2.55
5.10
7.65
8.40
10.20
12.70
15.30
17.00
22.00
24.40
Overall
Length (A)
Figure3
(in)
3.71
5.73
5.73
6.01
6.77
7.67
8.79
9.45
11.90
12.86
Figure 3 : Dimenisonal Information
Tolerance
Range (A)
Figure 3
(in)
3.32-4.10
5.34-6.12
5.34-6.12
5.62-6.40
6.38-7.16
7.28-8.06
8.40-9.18
9.06-9.84
11.51-12.29
12.47-13.25
Table 5: Hardware Codes
Overall Tube
Length (B)
Figure 3
(in)
2.94
4.96
4.96
5.24
6.00
6.90
8.02
8.68
10.90
11.86
Hardware
Code
3001
3002
3003
3004
3005
3006
3007
3008
Mounting
Brackets
Yes
No
Yes
Yes
Yes
No
No
No
Lead Wires
No
No
20”
30”
48”
20”
30”
48”
Figure 4 : Dimensional Information of Mounting Bracket
* Material is 0.125” thick. Dimensions used for reference only.
Page 6 | July 2016
Hubbell Power Systems Worldwide Locations
HPS under-oil arresters comply with the latest revision of the IEEE C62.11, as well as IEC 60099-4. “Standards
for Metal Oxide Surge Arresters for AC Power Circuits.“
h
America
estic
international
NY
SC
worth, OH
on, NJ
onville, FL
alia,
MO
City, TN
dsville,
lia, MO IL
boro,
SC NC
, AL
AL
St. Jerome, Canada
Tatui, Brazil
Wuhu China
Juarez, Mexico
Matamoras, Mexico
City, TN
NY
a, FL
Mount, NC
worth, OH
ed, CT
monee Falls, WI
ome, Canada
national
ome,
BrazilCanada
Brazil
, Mexico
China
City, China
Mexico
hai, China
oras, Mexico
China
North America
Aiken, SC • Boonton, NJ • Centralia, MO • Edwardsville, IL • Goldsboro, NC • Leeds, AL • Lenoir City, TN • Leroy,
NY • Palatka, FL • Rocky Mount, NC • Wadsworth, OH • Winsted, CT • Menomonee Falls, WI • St. Jerome, Canada
International
Juarez, Mexico • Tatui, Brazil • Ragao City, China • Shanghai, China • Wuhu, China
United States, Canada,
International
Hubbell Power Systems, Inc.
210 N. Allen Street
Centralia, MO 65240
Phone: 1-573-682-5521
Fax: 1-573-682-8714
email: hpsliterature@hubbell.com
Mexico
HUBBELL DE MEXICO, S.A. DE C.V.
Av. Insurgentes Sur #1228, Piso 8
Col. Tlacoquemacatl Del Valle
Mexico, D.F. 03200
Phone: 52-55-9151-9999
Fax: 52-55-9151-9988
Website: hubbell.com.mx
Web: www.hubbellpowersystems.com
Email: hpsliterature@hubbell.com
Page 7 | July 2016
NOTE: Because Hubbell has a policy of continuous product improvement, we reserve the right to change design and specifications without notice.
Copyright 2016 Hubbell Incorporated
©
CA01063E
Never Compromise TM
www.hubbellpowersystems.com
Printed in USA