Partial Discharge Analyzer (PDA) is used to determine if there is or what is the level of partial discharge activities in the insulation of a power transformer.

Filed in Other Tools and Equipments, Transformers

Single Bus
This arrangement involves one main bus with all circuits connected directly to the bus. The reliability of this type of arrangement is very low. The maintenance of the bus and breakers would require the outage of the total system and the line.

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Electric generator losses usually include the same kind losses as of the power transformer, copper losses in the winding and magnetizing losses in the core, plus the rotational losses.

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DC to AC inverter’s function is to convert Direct Current (DC) voltage to Alternating Current (AC) voltage.  DC to AC inverter is commonly used for converting High Voltage DC (HVDC) transmission voltage back to AC, and for converting the DC output voltage of a photovoltaic (PV) solar panel to suitable AC voltage.

Filed in Other Tools and Equipments

The Reactive Capability curve gives an alternative explanation why a synchronous generator that is operated below and within its rated power factor will induce more heat dissipation.

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Below is the comparison of heating between two synchronous generators rated 1000 KVA, 240 Amps, 2400 Volts, 900 RPM, and 0.8 pf, operated at 0.8 power factor and 1.0 power factor while maintaining an output KVA of 1000 KVA and output voltage of 2400 Volts.

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Capacitor Placement in a distribution system can reduce power losses in the electrical distribution feeder.

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The two watt hour method is an alternative watt hour meter connection to measure the active power in a three phase power system using only 2 watt hour meters instead of three meters.

Filed in Other Tools and Equipments