ATRT-03, ATRT-03A, AND ATRT-03B USER’S MANUAL
REV 7
i
SAFETY SUMMARY
This manual applies to the ATRT-03, ATRT-03A, and ATRT-03B current transformer turns-ratio
meters. The operating procedures are virtually the same for all three models, and any
differences are clearly described where applicable.
FOLLOW EXACT OPERATING PROCEDURES
Any deviation from procedures described in this User’s Manual may create one or more safety
hazards, damage the ATRT-03/03A/03B, damage the test transformer, or cause errors in the
test results. Vanguard Instruments Company, Inc. assumes no liability for unsafe or improper
use of the ATRT-03/03A/03B.
SAFETY WARNINGS AND CAUTIONS
The ATRT-03/03A/03B shall be used only by
trained operators
. All transformers under test shall
be
off-line
and
fully isolated
. Always ground the ATRT-03/03A/03B to a substation ground
before connecting the test cables to a transformer. Do not perform test procedures or service
unless another person is also present who is capable of rendering aid and resuscitation.
DO NOT MODIFY TEST EQUIPMENT
To avoid the risk of introducing additional or unknown hazards, do not install substitute parts or
perform any unauthorized modification to any ATRT-03/03A/03B test unit. To ensure that all
designed safety features are maintained, it is highly recommended that repairs be performed
only by Vanguard Instruments Company factory personnel or by an authorized repair service
provider. Unauthorized modifications can cause safety hazards and will void the manufacturer’s
warranty.
WARNING
Do not remove test leads during a test. Failure to heed this warning can result in electrical
shock to personnel and damage to the equipment.
Summary of Contents for ATRT-03
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