Mitsubishi Electric MEsoftstart/I01 Users, Installation & Instruction Manual page 19

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Inside-delta 6-wire connection
The diagram below shows the connection diagram for the soft starter with and without built-in bypass contactor, for an inside-
delta 6-wire connection. With this method of connecting the motor, 58% of the motor's starting current flows through the soft
starter switching elements during the start-up ramp. After start-up and if a built-in or external bypass contactor is used, 58% of
the running current of the motor flows through the bypass contactor. If no bypass contactor is used, 58% of the motor's
continuous running current flows through the soft starter switching elements.
Figure 5 – Soft starter circuit diagram for 6-wire inside-delta motor
Ensure to connect the grid-side terminals of the inside-delta motor to the soft starter L1, L2, L3 terminals. Incorrectly
connecting them to the Bypass terminals may damage the soft starter. Refer Figure 19.
Note that for inside delta wiring the Earthing Leakage protection is not active.
19 Installation Instructions

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