Megger TM1800, User Manual

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TM1800 ZP-CG01E CG0757JE
8 APPLICATION EXAMPLES
8.2 Example 2
3-phase circuit breaker with single
interrupter per phase and common
operating mechanism
Test quantities
„ „
Main contact timing measured by the Timing M/R module
„ „
Auxiliary contact timing (one a & one b contact) measured
by the Control module
„ „
Coil current & voltage measured by the Control module
„ „
Main contact motion & velocity
Transducer in use
„ „
Linear, resistive, 150 mm
Others
„ „
No resistor contacts, no grading capacitors
Necessary settings in Breaker View
Breaker View
Number of phases 3
Operating mechanism Common
How to connect
Number of interrupters per phase 1
Resistor contacts None
Number of a-contacts 1
Number of b-contacts 1
Breaker View \ Pulse & Delay Times
These settings are depending on the circuit breaker
type. If you are uncertain please refer to the breaker
manufacturers data.
Breaker View \ Measurement Preferences
Coil current On
Control voltage On
Static voltage On
Breaker View \ Measurement Preferences \
Measurement Time & Sample Interval
The default settings should be sufficient in most of
the cases.
Breaker View \ Measurement Preferences \
Motion Measurement Preferences
Transducer type Linear, Resistive
Absolute (calibrated transducer) On
Breaker View \ Measurement Preferences \
Motion Measurement Preferences \
Speed
Calculation points
Whenever possible do settings according to manu-
facturers definition. However if that is not available
you can make your own choice and use it as your
own reference.