arlin ESU-D2 earth leakage monitoring relay
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Insulation Resistance Monitoring Relay ESU-D2
- Insulation resistance monitoring relay for unearthed lines
- Earth insulation resistance monitoring & measurement
- Pre alarm 1 CO and main alarm 1 NO + 1 CO contact outputs 5 A / 250 V
- Monitoring of earth interruption / leakage on the device
- Measures single or combined resistances occurring against + or – pole of the network
- Analogue output terminals 5 V for external display of the earthing resistance (0,1 V/kΩ)
- Adjustable alarm delay
- Railways version available: see ESU-D2R
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