doble TDR900 - Perform a Test; Pre-Test Check List; Figure 14. Locating a Standard Rotary;Linear Transducer

Doble TDR900 User Guide
72A-2612-01 Rev. A 09/06
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Figure 14. Locating a Standard Rotary/Linear Transducer
5.7 Perform a Test
5.7.1 Pre-test Check List
Before conducting any test, review and check off this list:
• Has the circuit breaker under test been removed from service according to
government and company safety rules?
• Has the external ground cable (safety ground or chassis ground) been installed on
the TDR900 and connected to the breaker ground?
• Is proper AC power available for the TDR900?
• Has one end of each phase of the breaker been grounded?
• Have all DC power knife switches been opened in the Breaker Control cabinet?
• Was the breaker in the closed position when the motion Transducer Connecting
Rod was installed?
• Has the Transducer Cable been connected to the secured Motion Transducer?
• Have the Contact Monitor Cables (Sectional or Overall) been connected to the
breaker bushings?
• Are all Control cables connected to the TDR900?
If all steps are checked OK, reapply DC power to the breaker for off-line tests to go
ahead.