Delta 4000 Instruction Manual download pdf (Page 36)

81331 Rev 01 Nov 2010

Three winding transformer test

When UST-R is selected for a CHL test, the HV output terminal is to be

connected to the primary winding, the red terminal to the secondary winding and

the blue terminal to the tertiary winding. The blue terminal is in this case

grounded/guarded.

For CHT measurement UST-B should be selected. The blue terminal is now

measured and the red is grounded. The time saving benefit is that the

transformer can be tested without the need for reconnections.

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Delta 4000 Instruction Manual Page 36