Vanguard EZCT-2000B - Manual (Page 14)

EZCT-2000B USER’S MANUAL REV 1
10
3.0 OPERATING PROCEDURES
3.1 EZCT-2000B Cable Connections
Always connect the EZCT-2000B to the substation ground before connecting any test cables.
The EZCT-2000B is supplied with five 20-foot X test cables 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. The insulation resistance test connection is shown in
Figure 3. The burden test connection is shown in Figure 4. The current source test connection is
shown in Figure 5. Transformer bushing CT connections for Delta and Y transformers are shown
in Figure 6 and Figure 7, respectively.
Figure 2. Typical EZCT-2000B Excitation and Ratio Test Cable Connection