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DOLD LK 5895 – Insulation monitor

Brand
DOLD
Part number
LK 5895
Order number
0065217

Insulation monitor

  • 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
Category: SKU: DOLD-0065217 Tags: Brand:
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Brand

DOLD

Housing width

90 mm

Approvals

UL

Enclosure design

Switch cabinet

Order number

0065217

The insulation monitor LK 5895 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). 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.

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

Technical specifications

Approvals UL
Auxiliary voltage DC
Classification For photovoltaic systems
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 5895

Available variants

Alarm value 1 – 15 kOhm · 1 – 250 kOhm
Auxiliary voltage DC 24 V
Contact equipping 2 x 1 changeover contact
Prewarning value 1 – 250 kOhm · 2 – 18 kOhm · 5 – 500 kOhm · 20 kOhm – 2 MOhm
Approvals and Markings UKCA · UL-listed C/US, UKCA
Variant Without wire-break detection at L(+)/L(-). Without analog output · With wire-break detection at L(+)/L(-). Analogue output with linear output function to indicate the insulation resistance value. With adapted measurement algorithm · With wire-break detection at L(+)/L(-). With analog output · With wire-break detection at L(+)/L(-). Without analog output · With wire-break detection at L(+)/L(-). Without analog output. With adapted measurement algorithm · With wire-break detection at L(+)/L(-). Without analog output. With extended temperature range · With wire-break detection at L(+)/L(-). Without analog output. With reduced measuring voltage

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