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SiC for Relay Protection

//SiC for Relay Protection
SiC for Relay Protection2017-11-21T15:46:31+00:00

Product logo SiC Disc  SIC Disc Range
  Key Features 

Extended temperature range up to 200°C
Higher Energy rating than comparable SiC Ceramics
Higher continuous Power rating

Large variations of different mounting arrangements

Dimensions and electrical values can be modified to customer requirements

Free of charge design service including technical drawing to international standards

Please find here all discriptions as pdf


In applications of high impedance relays an HVR non-linear resistor may be required to limit the current transformer secondary voltage to a safe level during a maximum internal fault condition. The relevant HVR non-linear resistor depends on the setting voltage of the relay and the maximum secondary internal fault current.

Please find further Information below under „Main Specifications“ and go for detailed PDF datasheet to our “Download” section.

  • Protection of the secondary fault overcurrent
  • Restricted earth fault protection

Main specifications

Table 1 Selection of HVR non linear Resistor for Relays on 1A Cts. (click to enlarge)

HVR Varistor for High Impedance Relay Tabelle 1

Table 2 Selection of HVR non linear Resistor for Relays on 1A Cts. (click to enlarge)

Other dimensions and electrical values are available on request

Sample drawing Relay protection Varistor