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  2. Zaporozhtransformator - Wikipedia

    en.wikipedia.org/wiki/Zaporozhtransformator

    Production of series of 250 MVA autotransformers rated for power up to and the transformers up to 400 MVA, 330 kV; Production of the first three-phase autotransformer 250 MVA, 500 kV, equipped with in-built on-load tap changer; Production of the first converter transformer 90 MVA for DC transmission line ± 400 kV, Volgograd – Donbas

  3. Solenoid voltmeter - Wikipedia

    en.wikipedia.org/wiki/Solenoid_voltmeter

    When testing power supply circuits, a high-impedance connection (that is, a nearly open-circuit fault such as a burned switch contact or wire joint) in the power path might still allow enough voltage/current through to register on a high-impedance digital voltmeter, but it probably can't actuate the solenoid voltmeter. For use with high ...

  4. Spain-Morocco interconnection - Wikipedia

    en.wikipedia.org/wiki/Spain-Morocco_interconnection

    The Spain-Morocco interconnection includes two 400 kV lines, commissioned in 1997 and 2006 that have a combined power of 1,400 MW and consisting of seven cables: three for each circuit, plus one for reserve. [3]

  5. Megger Group Limited - Wikipedia

    en.wikipedia.org/wiki/Megger_Group_Limited

    High power Relay test set with user features 2003 Multi-function tester with ergonomic design 2005 Noise immune 10kV insulation tester 2007 Loop impedance in an RCCB electrical test circuit tester [48] 2009 Three-phase transformer turns ratio test sets (TTR) 2010 Transformer ohmmeter (MTO) 2010 Cable fault location system (PFL) 2011

  6. Short-circuit test - Wikipedia

    en.wikipedia.org/wiki/Short-circuit_test

    A different form of short-circuit testing is done to assess the mechanical strength of the transformer windings, and their ability to withstand the high forces produced if an energized transformer experiences a short-circuit fault. Currents during such events can be several times the normal rated current.

  7. Electric power conversion - Wikipedia

    en.wikipedia.org/wiki/Electric_power_conversion

    Certain specialized circuits can also be considered power converters, such as the flyback transformer subsystem powering a CRT, generating high voltage at approximately 15 kHz. Consumer electronics usually include an AC adapter (a type of power supply ) to convert mains-voltage AC current to low-voltage DC suitable for consumption by microchips.

  8. Voltage converter - Wikipedia

    en.wikipedia.org/wiki/Voltage_converter

    A simple voltage dropper can be used to reduce the voltage for low-power devices; if more than 12V is required, or for high-powered devices, a switched-mode power supply is used. The output will usually be DC in the range 1.5–24 V. Power supplies that output either 100–120 V AC or 210–240 V AC are available; they are called inverters ...

  9. HVDC converter station - Wikipedia

    en.wikipedia.org/wiki/HVDC_converter_station

    When line commutated converters are used, the converter station will require between 40% and 60% of its power rating as reactive power. This can be provided by banks of switched capacitors or by synchronous condensers , or if a suitable power generating station is located close to the static inverter plant, the generators in the power station.

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