Schneider Altivar 71 VW3A7201 handleiding

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Handleiding

1757361 06/2012 7

Checking the installation

Operation on a generator

It is possible to use a braking unit with an isolated line supply (for example: a diesel engine generating set), but there are restrictive rules

limiting the power.

With a line supply whose architecture is similar to that shown in the diagram above, there are 2 additional restrictions:

• The power of the motor connected to the inverter must be less than half the nominal power of the generator.

• The total power of the two other loads must be more than double the power returned on the line supply.

If these conditions are not verified, changing the motor to operation as a generator could result in a sudden overload. This overload is too

high for the voltage regulator of the generator. The regulator reacts with an overshoot which leads to an overvoltage with the isolated line

supply.

CAUTION

RISKS OF INTERFERENCE

Overvoltages can cause serious damage to the frequency inverter and/or the braking

unit and the other loads.

Failure to follow this precaution can result in equipment damage.

VW3A7...

0.4kV

100kVA

20kW

ATV71

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