KPM165x Series
 
KPM165x - INSULATION GUARD FOR NON-GROUNDED AC NETWORKSKPM16x
  • Direct connection up to 500V line voltage, up to 25kV with HV adapter
  • Monitoring during both live and standby conditions
  • For use in land, marine, offshore, sub-sea and ocean floor Installations
  • Triple-zone insulation monitoring
  • Comply with AODC 035 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)
Application
The digitally controlled KPM165x 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 KPM165x 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 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 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 0-1mA for the slave indicator.

SAFETY
When a voltage adapter (ARx or ANx) is used the signal to terminals 4 and 6 on KPM165x is limited to a safe level, avoiding any dangerous voltage exposure to personnel.

The KPM165x range is designed to comply with specification AODC035 "Code of Practice for the Safe Use of Electricity Under Water" issued by IMCA.

INTELLIGENT SETTING ASSISTANCE
KPM165x 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.

KPM165H & KPM165HF - KPM165HG & KPM165HGFKPM16x
Scale range: 10kΩ - 500MΩ - (>2GΩ)
Start of monitoring has a 30 secs delay. This unit is for marine, offshore, sub-sea and ocean floor use. It has a wide measuring range in order to detect degradation of insulation at its origin. An important feature is the unit’s unique inhibit function, controlled by the Load Distortion and Earth-capacitance Detector (LDED).
 
The LDED function differentiates between a true (resistive) or a 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. The LDED will then momentarily inhibit all monitoring functions, freeze operation of meter, lamp display, alarm relays and analogue output for duration of a monitoring irregularity.

The unit will restore normal operation at the moment meter deflection rises above set alarm trip levels. The LDED function has minimum 5 secs detection time for any insulation fault.

Direct connection up to 500V line voltage.
Voltage range up to 25kV via HV adaptor ARx or ANx series.
 
KPM165G1 & KPM165GF1 - KPM165L1 & KPM165LF1KPM16x
Scale range: 500kΩ - 5GΩ - (>6GΩ)
Start of monitoring has a 30 secs delay. This unit is for marine, offshore, sub-sea and ocean floor use. It has a wide measuring range in order to detect degradation of insulation at its origin. An important feature is the unit’s unique inhibit function, controlled by the Load Distortion and Earth-capacitance Detector (LDED).
 
The LDED function differentiates between a true (resistive) or a 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. The LDED will then momentarily inhibit all monitoring functions, freeze operation of meter, lamp display, alarm relays and analogue output for duration of a monitoring irregularity.

The unit will restore normal operation at the moment meter deflection rises above set alarm trip levels. The LDED function has minimum 5 secs detection time for any insulation fault.

Direct connection up to 500V line voltage.
Voltage range up to 25kV via HV adaptor ARx or ANx series.
 
KPM165E1 & KPM165F1 - KPM165N1 & KPM165NF1KPM16x
Scale range: 15MΩ - 10GΩ - (>12GΩ)
Start of monitoring has a 30 secs delay. This unit is for marine, offshore, sub-sea and ocean floor use. It has a wide measuring range in order to detect degradation of insulation at its origin. An important feature is the unit’s unique inhibit function, controlled by the Load Distortion and Earth-capacitance Detector (LDED).
 
The LDED function differentiates between a true (resistive) or a 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. The LDED will then momentarily inhibit all monitoring functions, freeze operation of meter, lamp display, alarm relays and analogue output for duration of a monitoring irregularity.

The unit will restore normal operation at the moment meter deflection rises above set alarm trip levels. The LDED function has minimum 5 secs detection time for any insulation fault.

Direct connection up to 500V line voltage.
Voltage range up to 25kV via HV adaptor ARx or ANx series.
 
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