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SKT - Surge Arresters
2-Electrode Ceramic Surge Arrester
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COMMON DIMENSIONS
Electrical Characteristics
Type
DC
spark-over
voltage
(100V/s)
V
75±25%
90±25%
150±20%
+30
-40
Impulse
spark-over
voltage
(1KV/us)
V
≤600
≤600
≤700
Impulse
discharge current
(10/1000us
300times)
A
50
50
100
Impulse
discharge current
(8/20us 10times)
KA
5
5
5
AC
discharge
current
(50Hz 1s 5 times)
A
5
5
5
Holdover
Voltage
V
/
/
80
Insulation
resistance
Ω
≥10
10
≥10
10
≥10
10
Capacitance
pF
SKT-2R-75A
1
SKT-2R-75D
SKT-2R-90A
1
SKT-2R-90D
SKT-2R-150A
1
SKT-2R-150D
SKT-2R-230A
1
SKT-2R-230D
SKT-2R-250A
1
SKT-2R-250D
SKT-2R-350A
1
SKT-2R-350D
<1.5
<1.5
<1
230
≤800
100
5
5
135
≥10
10
<1
250±20%
350±15%
≤800
≤800
100
100
5
5
5
5
135
135
≥10
10
≥10
10
<1
<1
Note: Specification are subject to change without notice.
1