Insulation monitor RN 5897/021

Article number: 0069252
Type: RN5897.12/021/61 AC/DC24-60V

The insulation monitor RN 5897/021 of the VARIMETER IMD family is a solution for optimal... more

Product description

The insulation monitor RN 5897/021 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. Mains areas of applications are non-earthed DC charging stations for electric vehicles with mains voltages up to DC 1000 V. The adjustment of the setting values is simple and user friendly done on 2 rotary switches on the front of the device. Via display and LEDs the measured value, device parameters and device status are indicated easy to read. With a sealable transparent cover the device is protectet against manipulation. The RN 5987/021 has an additonal Modbus RTU-interface. All measured values, device states and parameters can be read out, set and parameterized. All functions available on the device can also be operated via Modbus.

Technical specifications

Width:	52,5 mm
Classification:	For DC charging stations
Response value:	1 - 500 kΩ
IMD type:	AC, DC, AC/DC
Nominal voltage IT system:	AC 0 - 230, AC 0 - 690 (Coupling device), DC 0 - 230, DC 0 - 1000 (Coupling device) V
Auxiliary voltage:	AC/DC
Earth fault indicator:	Yes
Approvals:	UL
Response value type:	Adjustable
Bus interface:	Modbus RTU
Enclosure design:	Distribution board
Type:	RN 5897/021

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Advantages

Suitable for DC charging stations for electric vehicles acc. to IEC/EN 61851-23:2014/AC:2016-06
Preventive fire and system protection
Detection of symmetric and asymmetric insulation faults
Quick fault localisation through selective earth fault detection to L+ and L-
Universal application in non-earthed AC, DC, AC/DC networks up to AC max. 250 V or DC max. 300 V
With connection facility of an external coupling device RL 5898 for voltages up to AC 400 V / DC 500 V or RP 5898 for voltages up to AC 690 V / DC 1000 V
Very fast reaction time ≤ 1 s
Optimised insulation resistance monitoring also during mains voltage variation
Self-test every full operating hours
Easy adjustment of response values and setting parameter via rotational switch and menu display or via Modbus RTU-interface
Suitable for large leakage capacitances up to 5 μF
Monitoring also with voltage-free mains
Measuring circuit L(+)/L(-) with broken wire detection (can be switched off)
Protective conductor PE1/PE2 with broken wire detection (can't be switched off)
2 changeover contacts each for insulation failures-Pre-alarm and alarm each galvanically isolated
With galvanic separated Modbus RTU interface

Features

Insulation monitoring according to IEC/EN 61557-8
2 separate adjustable response thresholds (using e.g. for pre-alarm and Alarm)
Setting range of 1st response value (Pre-alarm): 1 kΩ … 500 kΩ
Setting range of 2nd response value (alarm): 1 kΩ … 500 kΩ
Energized or de-energized on trip can be selected for indicator relay
Display for indication of measured value, device parameters and device status
Automatic and manual device self-test
Alarm storage selectable
Protection against manipulation by sealable transparent cover
External control input for combined test- / reset-button with additional Stop of the measuring function
2 wide voltage input for auxiliary voltage
Width 52.5 mm

E. Dold & Söhne GmbH & Co. KG

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