What products does Hirotronix supply?

Hirotronix supplies industrial automation sensors, machine safety systems, operator controls, level measurement systems, and automation components.

Where is Hirotronix located?

Hirotronix is located in Mississauga, Ontario, Canada.

Does Hirotronix provide worldwide service?

Yes, Hirotronix supplies automation and sensor solutions worldwide.

DOLD LK 5896/900 – Insulation monitor

Brand

DOLD

Part number

LK 5896/900

Order number

0066991

Insulation monitor

Preventive fire and system protection
System for sequential monitoring of separated voltage systems, that can be coupled
Quick fault localisation through selective earth fault detection to L+ and L-
Universal application in non-earthed AC, DC, AC/DC networks with up to 1000 V nominal voltage
Suitable for large leakage capacitances up to 3000 μF

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Brand	DOLD
Housing width	90 mm
Approvals	UL
Enclosure design	Switch cabinet
Order number	0066991

The insulation monitor LK 5896/900 of the VARIMETER IMD family is a solution for optimal insulation monitoring of modern IT systems. The device can be used in the most flexible way for AC, DC and AC/DC systems even with large leakage capacity to earth (PE). By using a trigger input and a trigger output 2 separate IT systems can be coupled and monitored during operation without the problem that the 2 insulation monitors disturb each other. The adjustment of the setting values is simple and user friendly done on 2 rotary switches on the front of the device. Via LEDs the measured value, device parameters and device status are indicated easy to read. The unit has 3 relay contacts to signal Insulation and device failures. The analogue output provides a voltage and current signal proportional to the actual insulation resistance, which can be connected to a superior control (plc), another system or external display unit.

Features

Insulation monitoring according to IEC/EN 61557-8
Detection of symmetric and asymmetric insulation faults
1 changeover contact each for prewarning and alarm
3. output relay for signalling wire break and device faults
Prewarning threshold setting range: 20 kΩ … 2 MΩ
Alarm threshold setting range: 1 kΩ … 250 kΩ
Energized or de-energized on trip can be selected for output relay
Setting the maximum leakage capacitance to shorten the response time
Simple, clearly arranged adjustment of the device with screwdriver
LED chain to indicate the current insulation resistance
Display ” measuring circuits active”
Display “Master” or “Slave”
Automatic and manual device self-test
Alarm storage selectable
External test and reset pushbutton can be connected
With watchdog timer to monitor the trigger signal
Width: 90 mm

Technical specifications

Approvals	UL
Auxiliary voltage	DC
Connection for indicator	Yes
Earth fault indicator	Yes
Enclosure design	Switch cabinet
IMD type	AC, AC/DC, DC
Nominal voltage IT system	AC 0 – 1000 V, DC 0 – 1000 V
Response value	1 – 250 kΩ
Response value type	Adjustable
Width	90 mm
Type	LK 5896/900

Available variants

Alarm value	1 – 250 kOhm
Auxiliary voltage	DC 24 V
Contact equipping	3 x 1 changeover contact
Prewarning value	20 kOhm – 2 MOhm
Approvals and Markings	UL-listed C/US, UKCA
Variant	Monitoring of separated voltage systems, that can be coupled