12.5 Arbitrary Phase
Arbitrary phase displacement (those that don’t follow the 30° clock steps) between the primary
and secondary winding are an usual feature in multi-winding transformers like rectifier
transformers, to reduce harmonics injected into the system (increasing the number of rectifier
phases to increase the number of pulses in the rectified dc signal).
In the 2293 arbitrary phase shift measurement is achieved by using a single-phase supply with no
extra hardware. The necessary three phase equivalent voltages at different transformer terminals
are simulated by energizing a pair of the transformer terminals and interconnecting certain other
terminals. The resulting voltages at different terminals is used to determine the arbitrary phase
shift.
12.6 Activate the Arbitrary Phase option
The 2293 is equipped with an optional turns ratio function. This optional feature is enabled using
the license manager. This process only needs to be completed the first time turns ratio is used.
To access to the license manager, select
setup function key in the bottom bar of
any application
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