| Description |
v, 32 leaves : illustrations ; 29 cm |
| Summary |
"Open-delta/open-delta and open-wye/open-delta transformer banks are often used as an economic means of supplying simultaneous single-phase and 3-phase loads. If the 3-phase load is an induction motor and if these banks are used, the inherent voltage unbalance causes increased losses and uneven heating that may lead to motor failure. Two previously published theories are used to predict motor heating that is caused by the unbalanced voltages and the motor derating that is necessary to prevent insulation failure"--Abstract, leaf ii. |
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