Lighting Arresters
Zinc Oxide Distribution Class ArresterRashtriya
Metal Oxide Lighting Arresters in brown/grey procelain manufactured by
Rashtriya have no spart gaps and the design is filed proven. Rashtriy's
Distribution Arrestrs in ratings of 3KV through 42 KV incorporate the
highly non-linear nature of metal oxide veristor.Features
Zinc Oxide valve elements are composed of a specially formulated
compound of ZnO and small amounts of other selected metal oxides. These
ZnO elements maitain stable characteristics. Accelerated life tests
show that arrester losses will not increase during an arrester's
service life when exposed to a continuous steady state voltage. Also
the low protective characteristics are maintained and equipment
protections is never compromised.
- Nominal discharge current: 10 KAP Reference current : 1.5 KAP
- High current impulse withstand (4/10 usec): 100 KAP
- Long duration current impulse withstand: 250 AP/200 usec.
- Energy dissipation capability: 2kJ/kV of rated voltage
- Watt loss: 0.10 WKV
Rated Voltage
(kVrms)
|
MCOV
(kVrms)
|
Ref. Voltage
(kVrms)
|
Discharge Voltage Characteristics (KVP)
|
Temporary Average Characteristics (kVrms)
|
Lighting Impulse
8/20-sec wave
|
Switching Impulse
30/60 sec
|
Steep Current 1/2 ~ usec at NDC
|
0.1 sec
|
1.0 sec
|
10.0 sec
|
| 5 kAP |
10 kAP |
20 kAP |
125 A |
500 A
|
3
|
2.55
|
3
|
10.5
|
110
|
14.5
|
8.0
|
8.50
|
12.5
|
3.70
|
3.50
|
3.40
|
6
|
5.10
|
6
|
21.0
|
22.0
|
28.5
|
16.0
|
12.5
|
24.5
|
7.40
|
7.10
|
6.80
|
9
|
7.65
|
9
|
30.0
|
31.5
|
41.5
|
22.5
|
24.0
|
35.0
|
11.0
|
10.6
|
10.1
|
12
|
10.2
|
12
|
40.0
|
42.0
|
54.5
|
30.0
|
32.0
|
47.0
|
14.7
|
14.1
|
13.5
|
15
|
12.7
|
15
|
50.0
|
52.5
|
68.0
|
38.0
|
40.0
|
58.0
|
18.4
|
17.7
|
16.9
|
18
|
15.3
|
18
|
59.5
|
63.0
|
82.0
|
45.0
|
48.0
|
70.0
|
22.1
|
21.2
|
20.3
|
21
|
17.0
|
21
|
62.5
|
66.0
|
85.0
|
47.0
|
50.0
|
73.0
|
25.8
|
24.7
|
23.7
|
24
|
19.5
|
24
|
73.0
|
77.0
|
100.0
|
55.0
|
59.0
|
85.0
|
29.4
|
28.2
|
27.0
|
27
|
22.0
|
27
|
79.0
|
83.0
|
107.0
|
59.0
|
63.0
|
92.0
|
33.2
|
31.8
|
30.4
|
30
|
24.4
|
30
|
90.0
|
95.0
|
123.0
|
70.0
|
72.0
|
105.0
|
36.8
|
35.3
|
33.8
|
36
|
29.0
|
36
|
110.0
|
116.0
|
150.0
|
82.0
|
88.0
|
128.0
|
44.2
|
42.4
|
40.6
|
42
|
34.0
|
42
|
113.0
|
120.0
|
155.0
|
85.0
|
91.0
|
132.0
|
51.5
|
49.4
|
47.3
|
|
5KA
|
10KA
|
12 KV
|
3000/- each
|
-
|
09 KV
|
2000/- each
|
12000/- each pcs |
18 KV
|
8000/- each
|
16000/- each pcs |
30 KV
|
15000/- each
|
20000/- each pcs |
Note: The above specifications confirm to IEC 99-4/1991 standard Zinc Oxide Distribution Class Lighting Arrester Rashtriya
|
