GENERATOR SELECTION CONTENTS - Diesel Generator
GENERATOR SELECTION CONTENTS - Diesel Generator
GENERATOR SELECTION CONTENTS - Diesel Generator
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3. Rating Adjustments<br />
¨ Derate for High Ambient Temperature Section 4401<br />
¨ Derate for High Altitude Section 4411<br />
¨ Derate for Temperature Rise Restriction<br />
¨ Derate for Lagging Power Factor Below 0.8<br />
¨ Derate for Leading Power Factor Refer to Factory<br />
¨ Derate for Maximum Overload Condition<br />
¨ Derate for Maximum Voltage Dip Restriction<br />
¨ Derate for High Sustained Short Circuit Current Requirement<br />
¨ Derate and/or Special Build for Thyristor Type Load<br />
¨ Allowance for Future Growth<br />
¨ Derate for Voltages Higher than Normal Top Limit of Winding Refer to Factory<br />
¨ Derate for Voltages Lower than Normal Bottom Limit of Winding Refer to Factory<br />
¨ Allowance for Standby Duty only<br />
¨ Derate for Unbalanced Load Regulation<br />
¨ Final Steady State Machine Rating kW<br />
¨ Final Resultant Power Factor<br />
¨ Final Required kVA for Transient Performance<br />
¨ Final Required kVA for Short Circuit Performance<br />
¨ Frame Size Selection based on limited Rating<br />
4. Typical Test Data<br />
The following typical test figures are normally available on request:-<br />
¨ Open Circuit and Short Circuit magnetisation Curve<br />
¨ Regulation, Phase Sequence, Insulation Resistance and Megger<br />
¨ Heat Run<br />
¨ Efficiency Curves<br />
¨ Efficiency - by Summation of Losses<br />
¨ Waveform Analysis (Distortion, Deviation, T.I.F., T.H.F., Photograph)<br />
SECTION 4303<br />
January 1990<br />
Page 2