IRDH275-427 BENDER

IRDH275-427 BENDER Central control module

Product  Description：

1 - External supply voltage used to power device

2 - Wiring diagram for a three-phase system. Only two connections to the system are necessary to monitor all three phases.

3 Wiring diagram for a single-phase system

4 - Wiring diagram for a DC system

5 - Equipment ground connections

6 - External test button (normally open contact)

7 - External reset button (normally closed contact). When the

terminals are open, the fault message will not be stored.

8 - Standby contact. When the contact is closed, no insulation

measurements take place.

Only one BENDER insulation monitor may be active when several ungrounded systems are coupled together via a tiebreaker or other means. The disconnect relays and control

inputs F1/F2 integrated into the IRDH275 guarantee no interference with other BENDER devices when the system tiebreaker is closed. IRDH275B models feature automatic control via RS-485 with no control inputs necessary.

1 - INFO key: displays pertinent system information

ESC key: Goes back a step inside device's menu

2 - TEST button: Activates self-test

Arrow up key: Scrolls up inside device's menu

3 - LCD display

4 - RESET button: Resets device

Arrow down key: Scrolls down inside device's menu

5 - MENU key: Activates device's internal menu

Enter key: Confirm change inside device's menu

6 - Alarm LED 1 lights: Alarm, Prealarm

7 - Alarm LED 2 lights: Alarm, Main alarm

8 - System fault LED: Lights on connection or device error

• History memory with real-time clock to store up to 300 timestamped event records

• Galvanically isolated RS-485 interface (BMS protocol) for data exchange with other Bender devices and communication systems

• Standby contacts and RS-485 communication for operating multiple ground fault detectors in systems tied together with tiebreakers or interlocks

• Galvanically isolated analog output, 0(4 ) - 20 mA

The structure and details of the product：

Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Warranty: one year

Please make an inquiry for more models：

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JUSTWELL PTE. LTD

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