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Surge arresters
rote Linie
Type INZP   
            
   
  rated voltage Ur [kV] 3 to 42
  nominal discharge current [kA] 10
 

high current impulse (4/10) [kA]

100
  line discharge class 2
  energy absorption capability
[ kJ /kV Ur ]
3,36
  creepage distance [mm] 462 to 1135

Type INZ   
            
   
  rated voltage Ur [kV] 3 to 36
  nominal discharge current [kA] 10
 

high current impulse (4/10) [kA]

100
  line discharge class 2
  energy absorption capability
[ kJ /kV Ur ]
3,36
  creepage distance [mm] 95 to 930
 


Our medium voltage distribution surge arrester are very reliable high quality protection devices available in two types INZP (polymeric housing) and INZ (porcelain housing) for maximum continuous operating voltages from 3 to 42kV and a nominal discharge current of 10 kA.

They are used in indoor or outdoor overhead applications to protect MV networks, distribution transformers, motors and cables against both atmospheric and switching overvoltages.

The gapless design incorporates highly non-linear metal oxide (ZnO) varistors elements which are designed and manufactured completely in-house.

The INZP is a distribution surge arrester with low profile non-ageing polymeric housing to eliminate the problem of chipped or cracked porcelain that can occur through rough handling or shipping. The high quality of the polymeric housing has been verified by a 5000 hours climatic ageing test in accordance with IEC61109 annex C.

The INZ type arrester is a heavy duty distribution class surge arrester. The porcelain housing reduces the overall length without sacrificing strike and leakage distances.

Our surge arrester are tested in accordance with the latest standard ANSI/ IEEE C62.11-1993 for metal oxide arresters as well as in accordance with IEC 60099-4 for line discharge class 2.

Advantages
Easy installation due to light weight
High personal safety
Non-ageing housing
Suitable for indoor and outdoor installation
Rigid mechanical design
Some Technical Features
Suitable for nominal frequency from 50 to 60Hz
Ambient temperature from -40°C up to +60°C
Including ground lead disconnector
Including insulating bracket out of high strength glass fibre reinforced polyester
NEMA Type B Bracket for crossarm or pole mounting (optional)
Insulator cap to cover superior contact of the arrester (optional)

 
   
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