Operating Procedures
EZCT and EZCT-10
SAFETY SUMMARY
This manual applies to Model EZCT
and EZCT-10
. The operating procedures are
virtually the same for all models, any differences in operation are clearly described in the step-
by-step procedures.
Follow Exact Operating Procedures
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safety hazards, damage the EZCT, or cause errors in the test results; Vanguard Instruments Co.,
Inc. assumes no liability for unsafe or improper use of the EZCT.
The following safety precautions must be observed during all phases of test set-up, test hookups,
testing, and test-lead disconnects.
SAFETY WARNINGS AND CAUTIONS
This device shall be used only by
trained operators
.
All Current Transformers under test shall be off line and fully isolated.
Always ground the EZCT
and EZCT-10
to a substation ground
before connecting the test cables to a transformer.
Precaution with High Test Voltage
Because the EZCT can produce a voltage up to 1,200Vac, this high voltage can cause severe
injury, death, and/or equipment damage. The device shall be used only by trained operators.
Do Not Test Current Transformers in Circuit
Never attempt to test any Current Transformer still connected to a circuit. All Current
Transformer terminals shall be isolated before conducting any test with the EZCT.
Do Not Modify Test Equipment
Because of the risk of introducing unknown hazards, do not install substitute parts or perform
any unauthorized modification to any Model EZCT Test unit. To ensure that all designed safety
features are maintained, it is recommended that repairs be performed only by Vanguard
Instruments Co. factory personnel or by an authorized repair service. Unauthorized
modifications can cause serious safety hazards and will nullify the manufacturer's warranty.
