The two motor control designs presented in this publication are shown with hand- off-automatic selector switches; stop-start ... The control circuit voltage as shown is for 460 volts; if desired, a control transformer can be used to provide a control ... They also provide protection for wye-connected, 796-volt, 3-phase motors from overcurrent due to running single phase. They provide a reasonable degree of protection for delta-connected, 460-volt, 3- phase motors from overcurrent due to anbsp;...
|Title||:||API Recommended Practice for Grounded 830-volt, Three-phase Electrical System for Oil Field Service|
|Author||:||American Petroleum Institute. Division of Production|