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Polymer Surge Arresters

Polymer surge arresters, offer several distinct advantages over traditional porcelain surge arresters in electrical systems, particularly in terms of their physical properties and performance. 
Polymer-Surge-Arresters
Sl. No
System Voltage (kV)
Rated Voltage Ur (kV)
Nominal Discharge Current (kA)
Designation As per IEC99-4 Ed3.0
LD Class as per IEC99-4 2009
Qrs
Wth
Qth
High Current Withstand (kA)
1
0.440
0.5
1.5
-
Distribution
-
-
-
-
2
6.6
6
5
DM
Distribution
0.2
-
0.7
65
3
6.6
6
10
DH
Class 1
0.4
-
1.1
100
4
6.6
6
10
SL
Class 2
1
4
-
100
5
6.6
6
10
SM
Class 3
1.6
7
-
100
6
11
9
5
DM
Distribution
0.2
-
0.7
65
7
11
9
10
DH
Class 1
0.4
-
1.1
100
8
11
9
10
SL
Class 2
1
4
-
100
9
11
9
10
SM
Class 3
1.6
7
-
100
10
11
12
5
DM
Distribution
0.2
-
0.7
65
11
11
12
10
DH
Class 1
0.4
-
1.1
100
12
11
12
10
SL
Class 2
1
4
-
100
13
11
12
10
SM
Class 3
1.6
7
-
100
14
11
10
5
DM
Distribution
0.2
-
0.7
65
15
11
10
10
DH
Class 1
0.4
-
1.1
100
16
11
10
10
SL
Class 2
1
4
-
100
17
11
10
10
SM
Class 3
1.6
7
-
100
18
22
18
5
DM
Distribution
0.2
-
0.7
65
19
22
18
10
DH
Class 1
0.4
-
1.1
100
20
22
18
10
SL
Class 2
1
4
-
100
21
22
18
10
SM
Class 3
1.6
7
-
100
22
22
24
10
DH
Class 1
0.4
-
1.1
100
23
22
24
10
SL
Class 2
1
4
-
100
24
22
24
10
SM
Class 3
1.6
7
-
100
25
33
30
10
DH
Class 1
0.4
-
1.1
100
26
33
30
10
SL
Class 2
1
4
-
100
27
33
30
10
SM
Class 3
1.6
7
-
100
28
33
36
10
DH
Class 1
0.4
-
1.1
100
29
33
36
10
SL
Class 2
1
4
-
100
30
33
36
10
SM
Class 3
1.6
7
-
100
31
33
42
10
SL
Class 2
1
4
-
100
32
33
42
10
SM
Class 3
1.6
7
-
100
33
66
60
10
SL
Class 2
1
4
-
100
34
66
60
10
SM
Class 3
1.6
7
-
100
35
66
72
10
SL
Class 2
1
4
-
100
36
66
72
10
SM
Class 3
1.6
7
-
100
37
110
96
10
SM
Class 3
1.6
7
-
100
38
132
120
10
SM
Class 3
1.6
7
-
100
39
220
198
10
SM
Class 3
1.6
7
-
100
40
220
216
10
SM
Class 3
1.6
7
-
100

Other parameters

  • Maximum Lightning Impulse Residual Voltage at Nominal Discharge current(8/20µs) for Arrester with
  • NDC 5kA shall be 3.6*Rated Voltage
  • NDC 10kA with rated voltage 6kV to 24kV shall be 3.6kV*Rated Voltage
  • For Rated voltage 30kV to 216kV shall be 3.3*Rated Voltage
  • Partial Discharge at 1.05 *MCOV : <10pC
  • Frequency :50 Hz
  • Reference Voltage shall be greater than Rated Voltage.
  • Creepage Distance 25mm/kV, 31mm/kV or as applicable.
  • Reference Standard : IEC60099-4 and IS15086-4.