Reclosers
Service Information
Vacuum Interrupter Withstand Test Voltage
Ratings Information
S280-90-1
Applicable to all Kyle® Vacuum Interrupters.
2. At test voltages listed in Columns C and D, radiation is
negligible. The electric field present in a vacuum interrupter during normal operation or recommended testing
will not produce any hazard to personnel from X-rays.
WARNING: Hazardous voltage. The switchgear
and high voltage transformer must be in a test
cage or similar protective device to prevent accidental
contact with the high voltage parts. Solidly ground all
equipment. Failure to comply can result in death,
severe personal injury, and equipment damage. T221.3
!
3. Testing at voltages higher than those listed in Columns
C and D may cause radiation emission injurious to personnel.
4. Vacuum interrupter testing above the value listed in
Column C is not recommended.
CAUTION: Radiation. At voltages up to the
specified test voltages, the radiation emitted by
the vacuum interrupter is negligible. However, above
these voltages, radiation injurious to personnel can be
G109.2
emitted.
!
5. If direct-current dielectric tests (15 minute dc) are to be
conducted on an underground system with apparatus
connected, be sure vacuum interrupter contacts are
closed.
1. American National Standard C37.61-1973, “Guide for
the Application, Operation, and Maintenance of Automatic Circuit Reclosers”, allows testing after delivery
which includes application of 75% of rated low-frequency withstand voltage across open contacts of the
interrupter. This voltage (50-60 Hz) is tabulated below.
Column A
Column B
Apparatus Type
Designation
Interrupter Rated
Maximum Voltage
(kV rms)
PADMOUNT
PWE
PWVE
R-VAC/VFI
R-VAC/VFI
R-VAC/VFI
PST
PST
15.5
27.0
15.5
27.0
38.0
15.5
27.0
6. Normal electrical safety precautions should be
observed.
Column C
75% of Rated
Low-Frequency
Withstand Voltage
(1 min dry)
(kV rms)
25.5 **
30.0 **
25.5 **
30.0 **
37.5 **
25.5 **
30.0 **
Column D*
Column E ***
Recommended Dc
Withstand Voltage
(1 min dry)
(kV)
Nominal
Open-Contact Gap
(in)
37.1 **
42.4 **
37.1 **
42.4 **
74.2 **
37.1 **
42.4 **
1/2
1/2
1/2
1/2
1/2
1/2
1/2
* To prevent possible interrupter damage, the dc test source should be limited to 5 mA (single-phase) or 2 mA (threephase) maximum. Dc test voltages listed in Column D are not intended to specify 15-minute dc system test voltages.
** Test voltages must not be applied directly to submersible bushing stud terminals without using proper termination.
*** When testing vacuum interrupters not installed in distribution switchgear, the vacuum interrupter should have a nominal open-contact gap as listed in Column E.
July 2001 • Supersedes 1/96
Printed in USA
1
Vacuum Interrupters Withstand Test Voltage Ratings Information
Column A
Column B
Apparatus Type
Designation
Interrupter Rated
Maximum Voltage
(kV rms)
Column C
75% of Rated
Low-Frequency
Withstand Voltage
(1 min dry)
(kV rms)
Column D*
Column E
Recommended Dc
Withstand Voltage
(1 min dry)
(kV)
Nominal
Open-Contact Gap
(in)
RECLOSERS
2
V4E
V4H
V6H
V4L
VSA12
VSA12B
VSA16
VSA20
VSA20A
27.0
15.5
15.5
15.5
15.5
15.5
15.5
15.5
15.5
45.0
37.5
37.5
37.5
37.5
37.5
37.5
37.5
37.5
63.5
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
1/2
1/4
1/4
1/2
7/16
7/16
7/16
7/16
7/16
VSO12
VSO16
VW
VWE
VWV27
VWV38X
VWVE27
VWVE38X
38.0
38.0
15.5
15.5
27.0
38.0
27.0
38.0
52.5
52.5
37.5
37.5
45.0
52.5
45.0
52.5
74.2
74.2
50.0
50.0
63.5
74.2
63.5
74.2
1/2
1/2
1/2
1/2
1/2
1/2
1/2
1/2
VXE15
VXE27
15.5
27.0
37.5
45.0
50.0
63.5
7/16
7/16
NOVA1-15
NOVA1-27
15.5
29.2
37.5
45.0
53.0
63.5
7/16
7/16
NOVA-TS-15
NOVA-TS-27
15.5
29.2
37.5
45.0
53.0
63.5
7/16
7/16
NOVA15
NOVA27
15.5
29.2
37.5
45.0
53.0
63.5
7/16
7/16
S280-90-1
Column A
Column B
Apparatus Type
Designation
Interrupter Rated
Maximum Voltage
(kV rms)
Column C
75% of Rated
Low-Frequency
Withstand Voltage
(1 min dry)
(kV rms)
Column D*
Column E
Recommended Dc
Withstand Voltage
(1 min dry)
(kV)
Nominal
Open-Contact Gap
(in)
BREAKERS
VSA20B
15.5
37.5
50.0
7/16
FAULT INTERRUPTERS
CI
CI
CI
CM (600A)
CM (1200A)
CM (600A)
15.5
27.0
38.0
15.5
15.5
27.0
26.2 **
30.0 **
45.0 **
26.2
26.2
30.0
37.1 **
42.4 **
63.5 **
37.1
37.1
42.4
1/2
1/2
1/2
1/2
1/2
1/2
LOAD BREAK SWITCHES
F
F
DAS15
DAS27
15.5
27.0
15.5
27.0
37.5
45.0
37.5
45.0
50.0
63.5
50.0
60.0
1/2
1/2
7/16
7/16
CAPACITOR SWITCHES
SyncCap (110 kV BIL)
SyncCap (125 kV BIL)
VCS3-15
VCS3-27
VCS-1
VCS-1S
15.5
15.5
15.5
29.2
15.0
15.5
37.5
45.0
37.5
45.0
37.5
45.0
50.0
60.0
50.0
60.0
50.0
60.0
1/2
1/2
7/16
7/16
3/8
1/4
SECTIONALIZERS
TVS15
TVS27
DAS15
DAS27
15.5
27.0
15.5
27.0
37.5
45.0
37.5
45.0
50.0
60.0
50.0
60.0
7/16
7/16
7/16
7/16
* To prevent possible interrupter damage, the dc test source should be limited to 5 mA (single-phase) or 2 mA (threephase) maximum. Dc test voltages listed in Column D are not intended to specify 15-minute dc system test voltages.
** Test voltages must not be applied directly to submersible bushing stud terminals without using proper termination.
3
Vacuum Interrupters Withstand Test Voltage Ratings Information
!
SAFETY
FOR LIFE
© 2001 Cooper Power Systems, Inc.
Kyle® is a registered trademark of Cooper Industries, Inc.
NOVA™ is a trademark of Cooper Industries, Inc.
KA2048-275 Rev. 01
P.O. Box 1640
Waukesha, WI 53187
www.cooperpower.com
KRP
Printed on Recycled Paper
7/01