Isometer, insulation monitoring relay IRDH575B1

Description

Application

• component of the EDS460 stationary earth fault location system
• Networks in AC, 3(N)AC 0…760V, DC0…650V operating in IT system
• modern power supply and control networks containing power electronic converters (rectifiers, inverter AC and thyristor DC drives, UPS)

Key features:

• IT AC, 3(N)AC, 0…760V, DC0…650V network insulation control,
• Two independently adjustable alarm values of 1kΩ…10MΩ,
• INFO button for quick reading of settings and network parameters,
• Advanced self-test function with signaling relay,
• external and internal TEST and RESET buttons,
• Two independent relays to signal resistance alarms,
• Backlit alphanumeric LCD screen 4×16 characters,
• RS485 port,
• alarm memory,
• ground fault recorder,
• 0/4…20mA output,
• An internal contact to disconnect the measuring circuit when connecting several networks with isometers,
• expandable to a ground fault location system with additional evaluators and transformers

  

  We offer isometers:

  IRDH575B1-427	AC/DC 20…575V	DC 19,2…72V
  IRDH575B1-435	3(N)AC/DC20…575V	AC 84…264/DC 77…286V
  IRDH575B1-4227*	3(N)AC/DC20…150V	DC 19,2…72V
  IRDH575B1-4235	AC/DC 20…150V	AC 88…264/DC 77…286V
  IRDH575B2-435	3(N)AC 340…760V DC 340…575V	AC 84…264/DC 77…286V

  *Measurement voltage_Um=10V(version…-4227).