DIGITMR S2 (Circuit Breaker Analyzer with 3 contacts)

  • : Circuit Breaker Analyzer with 3 contacts


    The Vanguard DIGITMR S2 is an inexpensive, easy to use digital circuit breaker analyzer.

    The DIGITMR S2 can be operated stand-alone or can be computercontrolled.
    It can fully analyze a circuit-breaker’s performance by testing the contact time, stroke, velocity, over-travel, and contact wipe. Contact and motion analysis can be performed for all breaker contact operations (Open, Close, Open – Close, Close – Open, and Open – Close – Open). Timing results are recorded and displayed on the 240 x 128 pixels back-lit LCD screen and can also be printed on the built-in 4.5" wide thermal printer.


    “On-line” Timing Mode
    In addition to the conventional off-line timing mode, the DIGITMR S2 also offers an optional “on-line” timing mode.

    In this mode, the DIGITMR S2 captures the breaker’s trip or close time, the trip/close coil current
    “fi ngerprint,” and the battery supply voltage while the breaker is still in service. The trip/close time is derived from the time of trip, or close coil initiation, to the breaker’s bushing current breaker-make as detected by an AC clamp-on current sensing probe.

    The “on-line” timing mode can detect a breaker’s operating conditions with little or no down time.

    In thismode, the fi rst trip operation time of the breaker is captured.


    Open/Close Coil Current Monitoring
    A built-in Hall-Effect current sensor records the circuit breaker’s operating coil current amplitude
    and duration. The circuit breakers’ operating-coil waveforms (effectively, a performance
    “fi ngerprint” or “current profi le”) can be used as a diagnostic tool for analyzing a circuit breaker’s performance.




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