5-2
Figure 5-4.
Auxilliary current transformer.
Figure 5-5.
Meter Pac.
VR-32 Regulator and CL-2A Control
Auxiliary Current Transformer
The auxiliary current transformer (Figure 5-4) steps up the
0.2ampere control current supply to a usable 2.5-ampere or
5.0ampere source for special metering purposes. The two
jumpers on the terminal strip on the rear of the accessory panel
determine the current available from the auxiliary current trans-
former.
The auxiliary current transformer has an accuracy of ± 1%
with 25-VA burden at a 70% power factor. The secondary of the
transformer must be short circuited - using the short-circuiting
block provided - when a metering device is not connected to the
secondary. For full details refer to
S225-10-1 Supplement 5.
Meter Pac
The Meter Pac (Figure 5-5) is an instrumentation package
designed for installation on single-phase voltage regulators. It is
specifically designed for installation on Cooper Power Systems
CL-1, CL-2, or CL-2A control panels. However, the Meter Pac
can be installed on any device since it only requires a standard 1
20 VAC input, and a current input from a C.T. with a 0-0.2
ampere output.
The Meter Pac has an accuracy of ± 0.5% for the voltage
range, an accuracy of + 0.6% for the current range, and accura-
cy of ± 3.0% for kW, kVA, and kVAR ranges, and an accuracy of
±
5.O% for harmonics.
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