Vanguard EZCT-2000A - Manual (Page 14)

EZCT-2000A USER’S MANUAL REV 1
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3.0 OPERATING PROCEDURES
3.1 EZCT-2000A Cable Connections
Always connect the EZCT-2000A to the substation ground before connecting any test cables.
The EZCT-2000A is supplied with one 20-foot X cable set and one 35-foot H cable. The X cable
connections are required to run the current transformer excitation test. The H and X cable
connections are required to run the transformer turns-ratio test. A typical excitation and ratio
test connection is shown in Figure 2. Transformer bushing CT connections for Delta and Y
transformers are shown in Figure 3 and Figure 4, respectively.
Figure 2. Typical EZCT-2000A Excitation and Ratio Test Cable Connection