Insulation monitor
SL 5881

The insulation monitor IL 5881 of the series VARIMETER IMD monitors the insulation resistance of non-earthed DC systems (IT-systems) with nominal voltage up to DC 12 ... 280 V. The supply voltage (auxiliary voltage) is taken from the monitored system. The device has LEDs to indicate the operating status. The response value can be set in a user-friendly way on the front of the device via a potentiometer.

Advantages
. Preventive fire and system protection
. For DC voltage systems up to 12 ... 280 V
. Wide voltage range of measuring input UN DC 12 ... 280 V (on request DC 24 ... 500 V with separate auxiliary supply, Measuring range 20 ... 500 kΩ)
. Easy adjustment of response value
. Selective ground fault indication for L+ and L- allows fast fault finding

Features
. With reference to IEC/EN 61557-8 (see also section "Notes")
. Adjustable tripping value RAL of 5 ... 200 kΩ or 10 ... 500 kΩ
. Selective ground fault indication for L+ and L- allows fast fault finding
. Without auxiliary supply
. De-energized on trip
. 2 changeover contacts
. Automatic or manual reset, programmable
. With test and reset buttons
. Connection for external test and reset button possible
. Galvanic separated AC or DC auxiliary supply available as option
. Adjustable time delay as option
. 2 models available:
IL 5881: 61 mm deep with terminals near to the bottom to be mounted in consumer units or industrial distribution systems according to DIN 43880
SL 5881: 98 mm deep with terminals near to the top to be mounted in cabinets with mounting plate and cable ducts
. DIN rail or screw mounting
. 35 mm width

Technical specifications
Width: 35mm
Enclosure design: Switch cabinet
IMD type: DC
Nominal voltage IT system: DC 12 - 280, DC 24 - 500V
Response value type: Adjustable
Response value: 5 - 500kΩ
Earth fault indicator: Yes
Auxiliary voltage: AC, DC, Without
Type: SL 5881


Manufacturer: E. Dold & Söhne GmbH & Co. KG
Type: SL5881.12 DC12-280V UH AC220-240V
Art. No.: 0054627