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Goodrive300 Series VFD Peripherial options and parts

268

Control cable

Min. 200mm

Min. 300mm

Min. 500mm

Input power cable

Motor cable

Power cable

Wiring layout distances

D.4.4 Insulation checking

Check the insulation of the motor and motor cable as follows:

1. Check that the motor cable is connected to the motor and disconnected from the drive output

terminals U, V and W.

2. Measure the insulation resistance between each phase conductor and the Protective Earth

conductor using a measuring voltage of 500 V DC. For the insulation resistance of other motors,

please consult the manufacturer’s instructions.

Note: Moisture inside the motor casing will reduce the insulation resistance. If moisture is suspected,

dry the motor and repeat the measurement.

D.5 Breaker and electromagnetic contactor

You need to add a fuse to prevent overload.

You need to configure a manually manipulated molded case circuit breaker (MCCB) between the AC

power supply and VFD. The breaker must be locked in the open state to facilitate installation and

inspection. The capacity of the breaker needs to be 1.5 to 2 times the rated current of the VFD.

• Due to the inherent operating principle and construction of circuit breakers,

independent of the manufacturer, hot ionized gases may escape from the breaker

enclosure in case of a short-circuit. To ensure safe use, special attention must be

paid to the installation and placement of the breakers. Follow the manufacturer’s

instructions.

To ensure safety, you can configure an electromagnetic contactor on the input side to control the

switch-on and switch-off of the main circuit power, so that the input power supply of the VFD can be

effectively cut off when a system fault occurs.

INVT Goodrive300 Series User Manual

Questions and Answers: