Surge Arrester
2-Electrode Ceramic Surge Arrester
2R90K-3
2R Ceramic Surge Arresters
SPECIFICATION
Changzhou Wujin Jiangnan Discharge Tube Co.,Ltd
Add:Zouqu Town Industrial Zone,Wujin Changzhou City,Jiangsu,China
Tel：0519-83631254
Fax：0519-83631533
Email:jiangnan@jiangnan-cn.cn
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Surge Arrester
2-Electrode Ceramic Surge Arrester
2R90K-3
·Electrical
Characteristics
DC spark-over voltage
Impulse spark-over voltage
at 100V/μs - for 99% of measured values
-typical values of distribution
at 1 kV/μs - for 99% of measured values
- typical values of distribution
Service life
10 operations
50Hz, 1s
1)
10 operations [5x (+)&5x(-)]
8/20μs
1)
1 operations
10/350μs
1)
300 operations(alternating polarity) 10/1000μs
1)
Insulation resistance at 50 Vdc
Capacitance at 1 MHz
Arc voltage at 1 A
Glow to arc transition current
Glow voltage
Weight
Operation and storage temperature
Marking, blue negative
2R
90
Type: 2R9K-3
90
±20
＜500
＜450
＜600
＜550
V
%
V
V
V
V
A
kA
kA
A
GΩ
pF
V
A
V
g
℃
10
10
1
100
＞1
＜1.5
~10
~1
~80
~0.6
-40…+90
2R90
-Three Electrode
-Nominal voltage
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