Website: www.kingtronics.com
Email: info@kingtronics.com Tel: (852) 8106 7033 Fax: (852) 8106 7099
SKT - Surge Arresters
3-Electrode Ceramic Surge Arrester
■ COMMON DIMENSIONS
Electrical Characteristics
Impulse
discharge
current
(10/1000us
300times)
A
Impulse
discharge
current
(8/20us
10times)
KA
DC
spark-over
voltage
(100V/s)
V
Impulse
AC
discharge
current
(50Hz 1s 5
times) A
spark-over
voltage
(1KV/us)
V
Holdover
Voltage
V
Insulation
resistance
Ω
Transverse
voltage
durationns
Capacitance
pF
Type
SKT-3R-75A
SKT-3R-90A
SKT-3R-105A
75±25%
90±25%
150±20%
≤600
≤600
≤700
50
50
5
5
5
5
5
5
/
/
≥1010
≥1010
≥1010
<1.5
<1.5
<1
≤200
≤200
≤200
100
100
/
80
+30
230
Ⅰ
≤800
≤500
SKT-3R-230A
SKT-3R-350A
5
5
5
5
80
80
≥1010
≥1010
<1
<1
≤200
≤200
-40
Ⅱ
Ⅰ
≤800
≤600
100
/
350±20%
Ⅱ
SKT-3R-470A
SKT-3R-600A
I
≤900
≤700
100
/
470±20%
600±20%
5
5
5
5
80
80
≥1010
≥1010
<1
<1
≤200
≤200
Ⅱ
≤1200
100
Note: Specification are subject to change without notice.
1
KINGTRONICS [ Kingtronics International Company ]
