Wednesday, 13 February 2013

Testing of Transformer

Testing of transformer is done to determine their electrical, thermal and mechanical suitableness for the system where they will be applied or used. near of the tests performed on power transformers argon defined in guinea pig standards created by IEEE, NEMA and ANSI, whose purpose is to define a uniform check of tests recognized by both the manufacturer and the user.
Transformer Test expand:
Field Testing. Field testing can be divided into three categories 
1. sufferance tests
2. Periodic tests
3. Tests after adversity
Acceptance tests should be performed immediately after the product arrives at the destination. A few tests can be carried out which are tell below:
* Turns ratio
* Insulation immunity(Winding and core)
* Power factor
* resistor (winding)
* Polarity and phase relation
* Oil tests (DGA, moisture, dielectrics, etc.)
* Visual revaluation
Periodic tests are done after the product is installed in its permanent location. The main purpose of this test is to monitor the spring of the unit so that any potential trouble may be spotted early before a stroke occurs. Some of these are listed below:
* Turns ratio
* Insulation resistance 
* Power factor
* subway system (winding)
* Oil tests (DGA, moisture, dielectrics, etc.

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* Excitation legitimate test
* Visual inspection
An unscheduled outage and the potential of limitless failure can be prevented by following a periodic test schedule.
Failure tests conducted on electric transformers are:
* Turns ratio
* Insulation  resistance 
* Power factor
* Resistance
* Oil tests
* Excitation current test
* Combustible tout/ gas-in-oil analysis
* Visual inspection (internal)
When a transformer fails, the time of failure tests will decide whether the unit can be repaired at the site or whether it needs to be returned to the manufacturer, or a specialized center for repair. By comparing the results of...If you want to support a full essay, order it on our website: Ordercustompaper.com



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