Hyundai HIVD900G NHM71-400 Power Board

The Hyundai HIVD900G NHM71-400 Power Board is an internal power supply PCB used in the HIVD900G elevator inverter. It provides power for the inverter control electronics and is mainly required during drive repair or replacement of a failed power board.

One Part of the HIVD900G Drive

The NHM71-400 works inside the inverter rather than functioning as the main drive control board.

In the HIVD900G system, the power supply section supports internal circuits such as the inverter main board and gate-control circuit. Hyundai technical information also associates NHM71-400 with the HIVD900G induction-motor inverter.

The board is commonly identified as PB-NHM71-400, and different hardware versions may be found in service.

What to Read From the Existing PCB

When sourcing a replacement, check the information printed directly on the removed board:

• Inverter model: HIVD900G

• Board model: NHM71-400 / PB-NHM71-400

• PCB revision, such as R6.1 if present

• Front and rear PCB photos

• Connector and power terminal layout

• Additional labels or part numbers

• Required quantity

A similar HIVD900 power board should not automatically be considered compatible if the model or connection arrangement is different.

FAQ

What is NHM71-400 used for?

It is an internal power supply board used in the Hyundai HIVD900G elevator inverter.

Is NHM71-400 the HIVD900G main board?

No. It belongs to the inverter power supply section. The main control board and gate-control boards are separate components.

Is the PCB revision important?

Yes. If the original board carries a revision such as R6.1, include it when confirming a replacement.

For Hyundai HIVD900G NHM71-400 requirements, send us the original PCB photos and complete board markings for replacement checking before quotation.