Valhalla 2300, Руководство по эксплуатации

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APPLICATION NOTE AN105
MEASURING TRANSFORMER LOSS
WITH THE 2300
105-1. General
The 2300 is ideally suited for measuring the
loss of single phase transformers. The
following paragraph describes the connections
required to display transformer loss on the
2300.
105-2. Connections
Figure 1 details the connections to the 2300.
Channel A of the 2300 is connected to
measure the input power drawn by the
transformer. Channel C measures the power
sourced by the transformer secondary. When
the 2300 is connected for source power
measurement, the power display has a
negative polarity. The 3
φ
3-Wire display
sums the power measurements of channels A
and C. The result is the difference between
the power drawn by the transformer and the
power sourced by the transformer. This
difference is the "loss" or the amount of
power dissipated by the transformer.