User manual

Single Phase Soft Starter

7.10 Single Phase Soft Starter

There are times a single phase motor may need to be started using a soft starter. This can be accomplished with any 3 phase starter with

the following modifications to the starter.

• Connect Line power to terminals L1 and L3.

• Remove gate leads from J8 and J9 and tie off so the leads will not touch anything

• Remove gate leads from J6 and reinstall to J8, from J7 and reinstall to J9

• Change Input Phase Sensitivity, (P77/FUN 04) to “SPH” Single Phase.

• Connect motor to terminals T1 and T3.

164

7 - THEORY OF OPERATION

START

Starters

stop

reset

enter

MX2 CARD

BIPC-300055-01

Figure 44: Power Schematic for RB2 Integral Bypass Power Stack for Single Phase Operation