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Description reviews

Product Details:

Ограничители перенапряжений типов ОПН и МОПН для сетей 20 кВ исполнения УХЛ1

ОПН-П-20/24,0 УХЛ1

Surge suppressors are designed to protect electrical equipment in 20 kV networks with an isolated neutral. For surge suppressors, a range of selection of the highest long-term permissible operating voltage is offered from 20 to 27 kV in increments of 0.1 kV

Основные характеристики ограничителей перенапряжений для сетей класса 20 кВ категории размещения УХЛ1

Main characteristics of surge suppressors for networks of 20 kV class, placement category UHL1

Maximum continuous permissible operating voltage, value, kV	24 * )
Rated voltage, kV, not less	thirty
Classification voltage at classification current 2 mA, kV, not less	thirty
Throughput current on a rectangular pulse with a duration of 2000 μs, A	400	550	650
Rated discharge current, kA	10
The remaining voltage at the arrester with a current pulse of 30/60 μs with an amplitude:
– 250 A, kV, no more	59.6
– 500 A, kV, no more	62.7
– 1000 A, kV, no more	65.9
Remaining voltage at the surge arrester with a current pulse of 8/20 µs with amplitude:
– 5000 A, kV, no more	72.1
– 10000 A, kV, no more	78.5
– 20000 A, kV, no more	84.0
Remaining voltage at the arrester at a pulse of 1/4 μs with the amplitude of the rated discharge current, kV, no more	91.2
High current pulse amplitude 4/10 μs, kA	65	100
Specific dissipated energy, over two pulses, kJ/kV, not less	4.2	6.4	7.8
Leakage distance of external insulation, cm/kV,	at customer’s request 2.25, 2.5 and 3.1
Electrical strength of external insulation	according to GOST R 52725
Explosion-proof current according to GOST R 52725	40 kA
Warranty period, years
for surge arresters	1
for MOPN1
Estimated service life, years
for surge arresters	thirty
for MOPN	40
Guaranteed shelf life in manufacturer’s containers, years	1