Insulation monitor LK 5894

Numero Ordine: 0065331
Type: LK5894.12/010/61 DC24V 1k-250k

The insulation monitor LK 5894 of the varimeter IMD family provides best and up to date... altro

Descrizione del prodotto

The insulation monitor LK 5894 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.

Specifiche tecniche

Width:	90 mm
Response value:	1 - 250 kΩ
IMD type:	AC, DC, AC/DC
Nominal voltage IT system:	AC 0 - 690, DC 0 - 690 V
Auxiliary voltage:	DC
Earth fault indicator:	Yes
Approvals:	UL
Connection for indicator:	Yes
Response value type:	Adjustable
Enclosure design:	Switch cabinet
Type:	LK 5894

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Vorteile / Kundennutzen

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 690 V nominal voltage
Suitable for large leakage capacitances up to 1000 μF
Simplest setting via engaging rotary switches
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

Merkmale

Insulation monitoring according to IEC/EN 61557-8
Detection of symmetric and asymmetric insulation faults
2 changeover contacts
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
Width: 90 mm