Insulation monitor AN 5873

Article number: 0031599
Variant: AN5873.11/101 UH AC230V 50K-OHM

The insulation monitor AN 5873 of the series VARIMETER IMD monitors the ground resistance of... more

Product description

The insulation monitor AN 5873 of the series VARIMETER IMD monitors the ground resistance of ungrounded DC and 3-phase AC voltage systems (IT-systems) with nominal voltage up to DC 0 ... 1000 V and 3 AC 24 ... 690 V. The unit detects symmetrical as well as unsymmetrical faults. The separate auxiliary supply allows also monitoring when the system is without voltage. To indicate the actual ground resistance value the unit has an LED chain and an analogue output. When a fault is detected the relay switches and the red LED lights up.

Technical specifications

Width:	100 mm
Response value:	50 kΩ
IMD type:	AC, DC, AC/DC
Nominal voltage IT system:	3AC 24 - 690, DC 0 - 1000 V
Auxiliary voltage:	AC
Enclosure design:	Switch cabinet
Earth fault indicator:	Yes
Connection for indicator:	Yes
Response value type:	Fixed
Type:	AN 5873

Downloads

AN5873_en (PDF - 367.29 KB)

Advantages

Preventive fire and system protection
Insulation monitoring of DC- and 3 AC-systems up to 1000 V
and 3 AC 690 V nominal voltage
No additional coupling device required
Monitoring also with voltage-free mains

Features

Insulation monitoring according to IEC/EN 61 557-8
Fixed response value RAN
Internal reset button
External reset and test button can be connected
LED indicator
1 changeover contact
Programmable for manual reset or hysteresis function
Analogue output for insulating value
External connection of indicating instrument possible
as option de-energized on trip or energized on trip
Width 100 mm

Dold Industries Ltd