KPM161FQx
 
KPM161FQx - INSULATION GUARD FOR IT-NETWORKS WITH FREQUENCY CONVERTERSKPM16x
    • Designed for non-grounded networks with Frequency Converters
    • Direct connection up to 690V line voltage
    • Monitoring during both live and standby conditions
    • For use in land, marine and offshore Installations
    • "Megger" - safe to 1,4kVDC when aux power is OFF
    • Immune to earth capacitance and voltage surges
    • Analogue output proportional tometer reading
      Application
      The digitally controlled KPM161FQx is designed to monitor the insulation level between a non-grounded (IT) AC mains and its protective earth in systems with frequency converters . The unit is for land, marine and offshore 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 inactive (standby) conditions. Only ONE KPM161FQx can be connected to each IT-system.

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

      The unit injects a DC 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.

      This unit is used for any land, marine or offshore installations. Start of monitoring function is delayed when auxiliary power is switched on (default 5 secs delay). The unit has minimum of 9 seconds detection time for any insulation fault.

      Trip levels and delays are settable on unit rear. 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.
       
      MEGGER SAFE
      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.

      OUTPUTS
      The KPM161FQx has an isolated analogue output proportional to meter reading. If output is used for remote meter reading, we recommend 0-1mA for the slave indicator.

      SAFETY
      The KPM161FQx range is designed to comply with specification IMCAD 045 "Code of Practice for the Safe Use of Electricity Under Water" issued by IMCA.

      The unit meets EN 61010-1 Cat. III, Pollution degree 2 and the relevant environmental and EMC tests specified in EN 61326-2-4 to comply with the requirements of the major Classification Societies.
       
      INTELLIGENT SETTING ASSISTANCE
      KPM161FQ 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 rear is operated by user, the meter goes into Assistance Mode and meter reading and analogue output will reflect the potmeter setting.

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