Doble TDR900 User Guide
72A-2612-01 Rev. A 09/06
20
Open all DC power knife or disconnects in the breaker control cabinet; this ensures that
the breaker may not be tripped or closed inadvertently.
External grounds should be attached to both sides of the breaker while all connections are
made and the motion transducer installed, as in Figure 10. Later these grounds will be
removed from one side of the breaker just before running a test.
Figure 10. Grounding the Breaker before Tests
5.3
Preparing the Breaker – On-Line Tests
The breaker to be tested will be energized and may be under load. Connections are made
at the breaker control cabinet by authorized personnel.
5.4
Preparing the Doble TDR900 Instrument and PC
Place the TDR900 on a firm, clean, level surface.
Turn on the power switch located on the front of the TDR900 instrument without
connecting it to the user PC. The power light should come on. Both LED’s will come on,
then go out and finally the “System OK” LED will come on to indicate status as “OK.”
The T-Doble software should be run on the user PC. Make sure the T-Doble software is
installed on the PC hard drive, not a network drive.
Connect the TDR900 to the PC and connect via the “Instruments” tab in the software
(See section 6.7).
Содержание TDR900
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