Category: Testing and Commissioning

Commissioning Procedure for HV / HT Cable

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HT-CABLE

Step by step Commissioning guidelines of HV/ HT Cable Check continuity of the HT cable to confirm R, Y  and B phase at both ends as per marking. This is especially important when there is more than one run of cable phase; any cross-over will result in a dead  short circuit. The Cable screen is to be earthed at one end only. Cable gland plate should be of non- magnetic type e.g. aluminum. Perform HV / HT test on the cable.Apply only Dc voltage, as cables have relatively higher capacitance. Check…

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Electrical Testing and commissioning -Safety Guidelines

basicelectricaldesign

Risk and Safety assessment for Electrical Testing and Commissioning Safety of testing and construction personnel should be the primary  consideration at all times. The following are some guidelines to ensure safety :   Ensure that proper safety gear is used. These include safety shoes, safety helmet, safety gloves(Rubber-Electrical), Rubber mat, fire extinguishers etc Whenever work is dine on power circuits (LT or HT), all power sources must be isolated by opening and withdrawing the circuit breakers. Earthing switches should be closed or if not available local  earthing should be done.…

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Power transformer factory acceptance test checklist

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Power transformer factory acceptance test checklist

Why Power transformer factory acceptance test checklist is required ? Every power transformer has gone through 2 type of testing before charging.The  First testing is done at the factory, under the supervision of vendor( who purchase it) and the second testing is done after installation at the site. Actually, the manufacturer offers the pre-inspection check before dispatching the material from its store and all of the testing cost carried by the manufacturer. So many of the manufacturer try to hide or bypass some test. Every person has no idea which…

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Commissioning Procedure of HT capacitor bank and reactor

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Commissioning Procedure of HT capacitor bank and reactor

Commissioning Procedure for HT capacitor bank and reactor   HT Capacitor Bank   Do a visual check of the equipment, to check for damage. Ensure that the connection is as per drawing. Visually trace the interconnection between individual capacitors, and verify that they as per the drawing. Check the capacitance value of the bank using LRC meter, and compare with the specified value. Check IR values. IF CT or residual VT (RVT) is provided, it has to be tested as per standard testing procedure. A complete test of the panel…

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Electrical Switchboard / Switchgear testing and commissioning

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Switchgear testing and commissioning electrical Switchboard

Electrical Switchboard / Switchgear testing and commissioning manual -From 3.3kv up to 33KV In this article I go to share the actual what we do in after panel/ switchgear installation and what are  the procedure of switchgear testing and commissioning ? Here we go: The test procedure described are applicable to metal clad switchboards. A switchboard comprises of circuit breakers, CTs, PTs, protection relays, & metering equipment. Commissioning procedure will be described for one panel and the same is applicable for the entire switchboard. As mentioned earlier the switchboard comprises various equipment…

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