KCM161x Series
    • Direct connection up to 690V line voltage for both single or three phase systems
    • Monitoring during both live and standby conditions
    • For use in land, marine, offshore, sub-sea and ocean floor Installations
    • Complies with IMCA D 045 Code of Practice
    • Triple-zone insulation monitoring
    • "Megger" - safe to 1,4kVDC when aux power is OFF
    • Immune to earth capacitance and voltage surges
    • Analogue output proportional to meter reading (F-version)
    • Optional slave indicator
    The digitally controlled KCM161x series monitors insulation level between a non-grounded (IT) AC mains and its protective earth, regardless of whether the mains is live or non-live (standby). The unit is for land, marine, offshore, sub-sea and ocean floor use.

    An AC or DC auxiliary voltage is required for the unit, if powered from a separate source the network can also be monitored during standby conditions. Only ONE KCM161x can be connected to each IT-system.

    The ohmmeter and the triple-zone status LEDs give at a glance the clear safety message:
    • ALARM
    Insulation is measured between the complete galvanically interconnected AC network and its protective earth.

    The unit injects a sequentially coded measuring signal into the monitored system. The signal flows to ground via the path of the insulation fault, the level of flow indicates the insulation resistance. The measuring accuracy is not influenced by any normal kind of load attached to the AC network.

    Trip levels and delays are settable on unit front. A trip LED flashes when the trip level is passed, the relay trips when the delay has elapsed. The timer resets if the fault is removed during countdown.

    When auxiliary power is OFF the unit input is automatically protected against "megger" test voltages up to 1.4kVDC, and incorrect measurements caused by the unit’s input impedance are avoided.

    All F versions have an isolated analogue output proportional to insulation level. If output is used for remote meter reading, we recommend 0-1mA for the slave indicator.

    The KCM161x range is designed to comply with specification IMCA D 045 "Code of Practice for the Safe Use of Electricity Under Water" issued by IMCA.

    The unit meets IEC60092-504 and the relevant environmental and EMC tests specified in IEC60068/60092 and IEC61000/60533 respectively, to comply with the requirements of the major Classification Societies.

    Special versions of the KCM161x are available as:

    KCM161xM series

    Insulation guard with DC detection function, protected against high-energy DC voltage imposed on the monitored AC supply.
    KCM261x series
    Insulation Guards with measuring loop continuity monitoring.
    KCM161x has a built-in Assistance tool for setting/verification of the trip levels and the analogue output.

    When either the Warning or Alarm potmeter on the front is operated by user, the slave meter goes into Assistance Mode and meter reading and analogue output will reflect the potmeter setting.
    Reset / Parallelling Disable Function
    KCM161x has a built-in disable function (available only when DC Aux. Supply is applied). When connecting two or more IT-networks together only one unit can be active, the other(s) must be disabled. When unit is disabled the power led will flash every 2 seconds to indicate that unit is inactive.
    KCM161E2 & KCM161F - KCM161G & KCM161GF
    Scale range: 0-1000kΩ - ∞ (>6MΩ)
    This unit is used for hospital, industrial, marine and offshore installations.

    Start of monitoring function is delayed when auxiliary power is switched on (default 5 secs delay). The unit has minimum 150 mS detection time for any insulation fault.

    Direct connection up to 690V line voltage.
    Up to 1,4kV via HV adaptor CH163x
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