INSULATION GUARD FOR NON-GROUNDED AC NETWORKS KCM163x
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INSULATION GUARD FOR NON-GROUNDED AC NETWORKS KCM163x • Direct connection up to 690V line voltage, up to 6,6kV with HV adapter • 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 • ”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 Application Specifications Auxiliary Supply: Optional Voltage: Supply tolerance: Power rating: Contact rating: Analogue Output: F-versions The digitally controlled KCM163x 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 KCM163x can be connected to each IT-system. The ohmmeter and the triple-zone status LEDs give at a glance the clear safety message: Temperature: Weight: Front protection: - ALARM (red zone) - WARNING (yellow zone) - HEALTHY (green zone) INTELLIGENT SETTING ASSISTANCE KCM163x 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. How to set alarm levels: Firstly adjust potmeter fully clockwise (see that slave meter goes to the top), then adjust potmeter down to required Warning or Alarm setpoint. Without any movement of potmeters, the meter will revert to normal Insulation Monitoring Mode after approximately 10 seconds. How to test analogue output signal: Adjust any trip level potmeter to activate Assistance Mode. Example: On a 4-20mA output, adjust potmeter fully anti clockwise for 4mAand fully clockwise for 20mA. General IDV MEASURING PRINCIPLE 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 theAC network. 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 All F versions have an isolated analogue output proportional to meter reading. If output is used for remote meter reading, we recommend 0-1mAfor the slave indicator. The KCM163x 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. SAFETY When a voltage adapter (CHx or ANx) is used the signal to terminals 4 and 6 on KCM163x is limited to a safe level, avoiding any dangerous voltage exposure to personnel. NOTE Special versions of the KCM163x are available as: KCM163xM series - Insulation Guards with DC detection function, protected against high-energy DC voltage imposed on the monitoredAC supply. KCM263x series - Insulation Guards with measuring loop continuity monitoring. Norway Denmark United Kingdom www.megacon.com ELECTRONIC CONTROL AND INSTRUMENTATION Page: 1 of 4 REF: Datasheet.KCM163x - REV: 1.03/01.2018 © All rights reserved to Megacon Megacon reserves the right to make any changes

Description Relay Operation KCM163E & KCM163F - KCM163G & KCM163GF This unit is used for marine, ROV and offshore installations. Start of monitoring function is delayed when auxiliary power is switched on (default 10 secs delay). The unit has minimum 150 mS detection time for any insulation fault. (Recommended forthrusterstandbymonitoring) Direct connection up to 690V line voltage. Up to 6,6kV via HV adaptor CH163x orAN6,6 series. Model Latch Output Adjustments Trip level Delay Coloured sectors show recommended areas of settings: -Indicates alarm tripzone - Indicates warning trip...

Model Latch Outnut Adiustments ImJevel Delay This unit is specifically designed for sub-sea monitoring and includes the advanced Load Distortion and Earth-capacitance Detector (LDED). The LDED function differentiates between a true (resistive) ora false (capacitive) drop in insulation reading, and will maintain reliable and accurate insulation monitoring even if load switching or a major change in load spread capacitance cause meter indication to drop below set relay trip levels. This situation may occur due to the latent high RC product at the high end part of the measuring range....

INSULATION GUARD FOR NON-GROUNDED AC NETWORKS KCM163x NOTE: See below for correct connection Analogue Output KCM163F, KCM163GF, KCM163F2, KCM163GF2, KCM163HF and KCM163HGF have an analogue output proportional to meter reading. (Special outputs are available on request) Add suffix from table below to type designation to specify output required: O/P1 0 - 10mA O/P6 N/A O/P2 0 - 20mA O/P7 N/A O/P3 4 - 20mA O/P8 0 - 10VDC O/P4 N/A O/P9 N/A O/P5 N/A O/P10 N/A Line/ Neutral R3 Cable with RJ12 plug Reset / Parallelling Disable Function + Option 1 Analogue output (Optional) Relays shown...