Zno Varistor Block MOV element of MOA accessories of Lightning Arrester Surge Arrester voltage rating 0.33kv 3kv 9kv 15kv 18kv 21kv 30kv 33kv 96kv 110kv 132kv 330kv

Sic varistor blocks and Zno varistor blocks

The key elements of Surge arrester

Description

Introduction of zno varistor:

The Zno varistor is the core element of MOA, which is mainly made by Zinc Oxide.  MOV(Metal Oxide Varistor)has greatly mended voltage-current characteristics and improved through-current capability, thereby to line up protection.

Our company produces series of varistors for polymeric housing arresters from 0.22kv to 330kv, and passed ISO9001-2000 International Quality Management System Recognition. If you will inquire surge arrester/lightning arrester, please click it.

tunnel kiln

a corner of workshop

Characteristics of Varistor:

  1. High current withstanding: over the standard requirement on the items of 2ms rectangular impulse current withstand, Residual voltage impulse, 8/20µs  nominal lightning impulse current, 4/10μ high current impulse withstanding
  2. Excellent aging function: why will zno varistor have good aging test function? The aging coefficient of resistance is less than 0.9 after aging test at 115℃ and 1000h corresponding charge rate.
  3. Excellent protection characteristics: Residual ratio reached the leading level according to IEC standard.
  4. High gradient: up to 300-400V/mm.

tunnel kiln

a corner of workshop

Complete QC system:

Changsha rich power company has an excellent production line and complete QC system including DC 1mA reference voltage, Leakage current ,2ms rectangular impulse current withstand, Residual voltage impulse, 8/20µs  nominal lightning impulse current, 4/10μ high current impulse withstanding.

If you will check the QC items about surge arrester/lightning arrester, please click it.

inspection

Inspection

Parameter list of normal types varistors varistor parameter varistor parameter

Parameter list of High gradient type varistor

varistor parameter varistor parameter

 

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