Power Electronics VS65 Series Hardware And Installation Manual

POWER ELECTRONICS
VS65 SERIES MV SOFT STARTER
CONFIGURATION, LOW VOLTAGE TRIAL AND COMMISSIONING
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8.2.2. Wiring process before the test
To realize the low voltage test, these instructions should be followed:
• Disconnect the medium voltage transformer cables from the primary and secondary (low
and medium voltage cables). This transformer is located next to the thyristors.
CAUTION
Do not continue with the test without disconnecting the MV transformer cables
.
Otherwise, there is death risk.
• Connect then the three-phase 400/110VAC or 400/70VAC transformer (configuration
star-star with phase angle 0) instead of the Medium Voltage transformer, its connection
is shown in the following drawing. The low voltage transformer’s input will be 400VAC
when it’s connected to the equipment terminals (L1, L2 and L3) and then power supply is
provided to the soft starter. The low voltage transformer output will provide 110VAC or
70VAC to the cables A601, B601 and C601. The objective of this method is to work with
low voltage instead of medium voltage to make the test safely. To connect the low
voltage transformer’s cables it’s indispensable to consider the phases order, use a
phase meter to make this connection easier.
Figure 8.3 Connection of the low voltage test transformer
A B
Figure 8.4 (A): Connection of the 70 or 110VAC low voltage transformer’s wires and (B): Connection of the 400VAC low
voltage transformer’s wires
• Provide 230VAC auxiliary power supply to the X4 terminal block, placed in the superior
door.

Power Electronics VS65 Series Specifications

General

Brand	Power Electronics
Model	VS65 Series
Category	Controller
Language	English