Vanguard EZCT-S2A - Manual (Page 13)

REV 1 EZCT S2A USER’S MANUAL
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3.0 OPERATING PROCEDURES
3.1 EZCT S2A Cable Connections
Always connect the EZCT S2A to the substation ground before connecting any test cables. 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 S2A Excitation and Ratio Test Cable Connection