Bender IR125Y-4 Insulation Monitoring Device B91023005 D101 V1.6

The ISOMETER®s of the IR125Y-4 series monitor the insulation resistance of unearthed AC and DC control circuits (IT systems). The supply voltage is taken from the system to be monitored.

Insulation monitoring for AC and DC systems (IT systems)

 Response values, adjustable 10…200 kΩ

 LEDs: Power On LED, alarm LED to signal insulation faults

 Internal combined test and reset button

 Connection external reset button

 Alarm relay with one potential-free changeover contact

 N/C operation

 Fault memory behaviour, selectable

Rated voltage:-  AC 250 V

 Rated impulse voltage/pollution degree:- 4 kV/3

Nominal system voltage Un :- DC 19.2… 308 V, protected against polarity reversal AC 19.2… 265 V

Nominal frequency fn :- DC 42…460 Hz

Max. power consumption :- ≤ 3 VA

Response value contact :-  10… 200 kΩ

Relative uncertainty :- +30/- 0 %, at least ±1.5 kΩ

Measuring voltage Um :- 13 V

 Measuring current Im max. (RF = 0 Ω) :- ≤ 120 μA

Internal DC resistance Ri :- 112 kΩ

Permissible system leakage capacitance :- ≤ 10 μF

Rated contact voltage :- AC 250 V/DC 300 V

 Making capacity :-  AC/DC 5 A

 Breaking capacity :- 2 A, AC 230 V, cos φ = 0.4 0.2 A, DC 220 V, L/R = 0.04 s

Vibration resistance IEC 60068-2-6 (device in operation) :- 1 g/10…150 Hz

Vibration resistance IEC 60068-2-6 (transport)  :- 2 g/10…150 Hz

Ambient temperature (during operation) :- -10…+55 °C

Ambient temperature (during operation) :- -40…+70 °C

Connection properties rigid/flexible :- 0.2…4/0.2…2.5 mm²

Connection, flexible with ferrule, without/with plastic sleeve:-  0.25…2.5 mm²

Conductor sizes (AWG) :- 24…12

Tightening torque :- 0.5…0.6 Nm

Degree of protection, internal components :- IP30

Degree of protection, terminals :- IP20

RESPONSE VALUE: RAN = 10…200K OHM
RATED VOLTAGE: UN = AC19,2-264V 50/60HZ DC19,2-308V
POWER CONSUMPTION: 1,5VA
RELAY CONTACTS: AC 250V 5A