BENSHAW RediStart EXEXMVRMX3 Series, User Manual

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3.2.5 Use of Power Factor Capacitors
Power factor correction capacitors and surge capacitors CAN NOT be connected between the starter and the motor. These devices can
damage the SCRs during ramping. These devices appear like a short circuit to the SCR when it turns on, which causes a di/dt level
greater than the SCR can handle. If used, power factor correction capacitors or surge capacitors must be connected ahead of the starter
and sequenced into the power circuit after the start is completed. A programmable relay can be configured as an up-to-speed (UTS) relay
and then used to pull-in a contactor to connect the capacitors after the motor has reached full speed.
z
NOTE: If the motor manufacturer supplies surge capacitors they must be removed before starting.
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3 - INSTALLATION
Figure 4: Separate Power Factor Correction Disconnect
Figure 5: Integral Power Factor Correction Disconnect