TDK Electronics · TDK Europe

Energy Varistors

The ultra reliable MOV

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Made mostly of zinc oxide, the Metal Oxide Varistor or MOV is a semiconductor structure which makes it the most essential element for an arrester to work. This material is very durable and long lasting. It is the heart of a surge arrester.

Features

  • IEC / IEEE (ANSI) compliant
  • Customized diameter up to 125 mm and height from 2 mm up to 44 mm
  • High discharge current for 4/10 μs impulses
  • Repetitive charge transfer rating up to 8.0 C
  • Maximum energy absorption up to 3500 A on 2 ms impulses
  • High end gradient performance discs ranging from 200 V/mm up to 550 V/mm
  • Glass passivated collar
  • Excellent thermal recovery capability
  • Low resistive power dissipation
  • Available for special applications such as under oil for transformer windings protection, DC application and under gas (SF6) for Gas Insulated Switchgear (GIS) with high gradient blocks.

Benefits

_Benefit_Small_Size

Small size of MOV with better electrical performance

  • Glass passivated collar enhancing energy absorption and high current discharge  

  • E36 series 36 mm diameter to withstand 100 kA for 4/10 μs impulses

  • E41 series 41 mm diameter to withstand 0.4 C repetitive charge transfer

 Reliable ageing performance

  • Low resistive power dissipation at AC application

  • DC ageing with dispolarity

  • Maximum energy absorption up to 3500 A on 2 ms impulses

  • Gradient performance of 220 V/mm for standard application

    • 350 V/mm for Gas Insulated Switchgear (GIS) application, upon request
    • 550 V/mm for customized application, upon request
_Benefit_Ageing

Applications

Check Suitable Applications per Product

Station Class

Distribution Class

Renewable Energy

Wind Solar

Traction

Industrial

Energy

Get data sheets and search

PDF Reference voltage (min) (kV) Residual voltage at nominal discharge current 8/20 µs or Ures (kV) Diameter (mm)
0.385·Ures,  0.400·Ures,  0.425·Ures,  0.431·Ures,  0.450·Ures 6.85 … 7.85 - 15.15 … 17.15 48 - 99
3 - 6 7.35 … 8.25 - 15.05 … 17.05 32 - 41.9

In order to download up to 20 files together as zip, please mark them with the check box. To start the download, please click the Download button at the end of the list.

  • Design overview
  • Overview of types
  • Ordering code system
  • General technical information
  • Selection procedure
  • Application notes
  • Calculation examples
  • Soldering instructions
  • Reliability tests
  • Approvals
  • Quality and environment
  • Climatic conditions
  • Cautions and warnings
  • Taping, packaging and lead configuration
  • Symbols and terms
  • Equation overview

In order to download up to 20 files together as zip, please mark them with the check box. To start the download, please click the Download button at the end of the list.

Number of Products 19 Help
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