Testing Power Transformers

Testing transformers is done to ensure their electrical, thermal, or mechanical suitability for the system that they will be used in. Many tests on power transformers can be found in IEEE, NEMA, ANSI standards. They are designed to provide a consistent set of tests that can both be recognized by the user and the manufacturer. In managing electricity infrastructure, all needs must be wise and with quality products. Then MGM Transformers can help to supply varying secondary voltages to externally connected loads. You can find quality electrical and lighting products at the MGM Transformer Company.

Transformer Test Details:

Field Testing. Field testing can be divided in to three categories

Acceptance

Periodic testing

Failure-free testing

Acceptance tests must be completed immediately upon arrival at the destination. There are a few things you can do, which are listed below.

Turns

Insulation Resistance (Winding or core)

Power factor

Resistance (winding).

Relationship of phase to polarity

Oil tests (DGA, moisture, dielectrics, etc.)

Visual inspection

After product installation in its permanent position, periodic testing are performed. This test is intended to identify potential problems and prevent them from becoming serious. Some of these are listed below.

Ratio for turns

Insulation resistance

Power factor

Resistance (winding).

Oil tests (DGA, moisture, dielectrics, etc.)

Excitation current test

Visual inspection

By following a schedule of periodic tests, you can prevent an unexpected outage and outright failure.

These failure tests are done on electric transformers

Turns

Insulation resistance

Power factor

Resistance

Oil testing

Excitation current test

Analysis of combustible and gas-in–oil gases

Visual inspection (internal).