High impedance relay Reyrolle 7PG23

High impedance relay Reyrolle 7PG23

Product Overview

The 7PG23 electro-mechanical single phase circulating current protection is used to detect earth faults in ‘high impedance’ protection schemes. The relay is typically applied used in transformer protection schemes.

Features :

One relay per phase can be applied to detect both phase and earth faults e.g. on reactors and stator windings of large machines.

The relay is a voltage operating device and has a user selectable operate voltage setting. The relay can be used in conjunction with an external shunt setting resistor where a higher operating current is required. An integral non-linear resistor limits over-voltages occurring during system faults. Operation flag indicator. Relays are housed in size E3 cases.

  • User selectable voltage setting
  • Integral voltage limiting device
  • Operation flag indicator

Functions :

Protection functions

  • High impedance restricted earth fault

More Information


+66 2 063 5262-3, +66 83 440 1404