Toshiba VF-FS1 Power factor correction capacitor, Operating at other than rated voltage, MCCB1

Models: VF-FS1

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E6581381

Power factor correction capacitor

Power factor correction capacitors cannot be installed on the output side of the inverter. When a motor is run that has a power factor correction capacitor attached to it, remove the capacitors. This can cause inverter malfunction trips and capacitor destruction.

1

U/T1

Inverter

V/T2

W/T3

IM

Remove the power factor correction capacitor and surge absorber

Power factor correction capacitor

Operating at other than rated voltage

Connections to voltages other than the rated voltage described in the rating label cannot be made. If a connection must be made to a power supply other than one with rated voltage, use a transformer to raise or lower the voltage to the rated voltage.

Circuit breaking when two or more inverters are used on the same power line.

MCCB1

MCCB2 (circuit breaking fuse)

INV1

MCCB3

INV2

MCCBn+1

INVn

Breaking of selected inverter

There is no fuse in the inverter's main circuit. Thus, as the diagram above shows, when more than one inverter is used on the same power line, you must select interrupting characteristics so that only the MCCB2 will trip and the MCCB1 will not trip when a short occurs in the inverter (INV1). When you cannot select the proper characteristics install a circuit interrupting fuse between the MCCB2 and the INV1.

If power supply distortion is not negligible

If the power supply distortion is not negligible because the inverter shares a power distribution line with other systems causing distorted waves, such as systems with thyristors or large-capacity inverters, install an input reactor to improve the input power factor, to reduce higher harmonics, or to suppress external surges.

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Toshiba VF-FS1 Power factor correction capacitor, Operating at other than rated voltage, MCCB1, INV1 MCCB3 INV2