Insulation monitor LK 5895

Contacts

Auxiliary voltage

Alarm value

Prewarning value

Approvals and Markings

Variant

Article number: 0065217
Type: LK5895.12/010/61 DC24V 1k-250k

The insulation monitor LK 5895 of the varimeter IMD family provides best and up to date... more

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Product description

The insulation monitor LK 5895 of the varimeter IMD family provides best and up to date insulation monitoring of modern IT systems in an optimum and state of the art way fulfilling the relevant standards. 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). 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.

Technical specifications

Width:	90 mm
Classification:	For photovoltaic systems
Response value:	1 - 250 kΩ
IMD type:	AC, DC, AC/DC
Nominal voltage IT system:	AC 0 - 1000, DC 0 - 1000 V
Auxiliary voltage:	DC
Earth fault indicator:	Yes
Approvals:	UL
Response value type:	Adjustable
Enclosure design:	Switch cabinet
Type:	LK 5895

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Advantages

Preventive fire and system protection
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
Simplest setting via engaging rotary switches
For monitoring photovoltaic system, also with thin-film technology
Optimised measuring times – normally shorter than with known methods
Monitoring also with voltage-free mains
Measuring circuit with broken wire detection
No additional coupling device required

Features

Insulation monitoring according to IEC/EN 61557-8
Detection of symmetric and asymmetric insulation faults
Measuring circuits can be disconnected via control terminals, e.g. for mains couplings
1 changeover contact each for prewarning and alarm
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 of active measuring circuits
Automatic and manual device self-test
Alarm storage selectable
External test and reset pushbutton can be connected
Width 90 mm