Power Automation Sweden AB

Cylindervägen 8
13152 Nacka Strand
Sweden
LK 5895

Insulation monitor

LK 5895

Contacts

Auxiliary voltage

Alarm value

Prewarning value

Approval

Variant

  • 0065217
  • LK5895.12/010/61 DC24V 1k-250k
The insulation monitor LK 5895 of the varimeter IMD family provides best and up to date... more

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

Type: LK 5895
Width: 90 mm
Response value: 1 - 250 kΩ
IMD type: AC, DC, AC/DC
Enclosure design: Switch cabinet
Earth fault indicator: +
With auxiliary voltage: +
Nominal voltage IT system: AC 0 - 1000, DC 0 - 1000 V
Response value type: Einstellbar

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