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Miniature Relays For Electronics Analog Switches

Orion Italia

IPR-D

Article: 00086644

Electromechanical relay / overload / protection / ground fault

The Current Protection Relay (IPR-D) has been designed to measure the ground RMS currents under normal conditions or under disturbances. The current signals are sensed throughout current transformer (CT). This information is internally processed by the microprocessor, to take the current protection actions defined under ANSI, IAC or IEC standard. The different functions provided by the IPR-D may be classified into the following groups:

Applications:
- Primary and backup protection for power plants, utility and industrial distribution systems.
- Protection of transformers, overhead lines, cables and generators.

Protection:
- CT primary ratio selectable in 5 amp steps (10 A to 5000 A).
- Inverse time ground overcurrent (ANSI 51N/51G), with selection of curves according to ANSI, IAC or IEC/BS142, as follows:
Moderately inverse.
Standard inverse.
Very inverse.
Extremely inverse.
Definite time.

- Instantaneous ground overcurrent (ANSI 50N/50G).
- Overload alarm adjustment to one level.
- 1 trip relay and 1 alarm relay.
- Loss of control volts relay.

Digital Measurement:
- RMS ground currents.
- Maximum instantaneous ground currents.

Signaling and Programming:
- LED and LCD display indication.
- Touchpad programming.
- Indication and storage of fault conditions and their values.
- Ground pickup indicator for testing.

Specifications

  • Type: electromechanical
  • Function: overload, protection, ground fault
  • Form: panel-mount
  • Applications: general purpose

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