Surge arrester PSPN */10/III


line discharge class 3

indoor use

PSPN */10/III- overvoltage limiters designed for indoor use to protect high-voltage transmission systems, transformers, switching equipment and HV cable distribution systems against atmospheric and switching overvoltage. The functional part of the limiters consists of a column of varistors sized for max. continuous operating voltage UC. The outer insulating shell is made from silicon material (grey colour). The material of the shell shows high resistance to the effects of surface leakage currents and to electric arc, possesses hydrophobic properties and shows excellent resistance to weather effects, pollution and UV radiation. The cover caps, connecting screws, nuts and terminals are made of stainless steel. With their design and technical parameters, the overvoltage limiters of the PSPN series conform to the standards EN 60099-4: 2014 and IEC 60099-4: 2014.

Označení PSPN 1/10/III PSPN 2/10/III PSPN 3/10/III PSPN 4/10/III PSPN 5/10/III PSPN 6/10/III PSPN 7/10/III
Maximální trvalé provozní napětí UC 0,88 kV 1,75 kV 3 kV 3,9 kV 4,75 kV 6 kV 6,9 kV
Jmenovité napětí Ur 1,1 kV 2,2 kV 3,75 kV 4,8 kV 6 kV 7,5 kV 8,6 kV
Jmenovitý výbojový proud In 10 kA
Impulz vysokého proudu (4/10) 2 x 100 kA
Dlouhý impulz proudu (2 ms) 850 A
Třída vybití vedení dle ČSN EN 60099-4 3
Zbytkové napětí při In Ures ≤ 3,5 kV ≤ 7 kV ≤ 10,7 kV ≤ 14,5 kV ≤ 18,3 kV ≤ 21,4 kV ≤ 25 kV
Výška h 195 mm 195 mm 195 mm 230 mm 230 mm 230 mm 230 mm
Pracovní teplota - 40 °C ÷ + 55 °C
Krytí IP62
Hmotnost m 1,6 kg 1,6 kg 1,6 kg 2,3 kg 2,3 kg 2,3 kg 2,3 kg
Katalogové číslo 97001 97002 97003 97004 97005 97006 97007

Note1: Standard cable length 0,5 metres. Other lengths are also possible at the customer’s request.
Note2: The height and weight are indicative only and may vary. We can send accurate data on your request.


• Long protective distance

• High absorption capacity
• Stable U-I characteristics even after repeated discharges
• Resistance to ageing
• Design resistant to explosion and bursting
• Resistance to pollution and UV radiation
• Resistance of the shell to rough handling
• Maintenance-free design
• Resistance to shocks and vibrations
• High mechanical resistance

Transport and storage

The overvoltage limiters may not be exposed to strong shocks and impacts during transport. They should be stored in the long term in an indoor store.


No testing of the function or maintenance such as cleaning is necessary during the anticipated life of the limiter.