KCM169x - BIPOLAR INSULATION GUARD FOR NON-GROUNDED DC NETWORKS 
- Direct connection 12 to 48 VDC systems, up to 1600VDC with RH adapter
(up to 5000VDC on request)
- Built-in test function
- All inputs and outputs fully isolated
- Triple-zone insulation monitoring and Supervision relay
- “Pathfinder” Indicates polarity of dominant earth fault
- Response time: 125-165mS
- Analogue output proportional to meter reading (F/L-version)
- Optional slave indicator
- Optional Modbus
Description
The digitally controlled KCM169x monitors insulation level between a
non-grounded (IT) battery or live DC network and its protective earth.
Only ONE KCM169x can be connected to the same DC-system. An AC or
DC (standard) auxiliary voltage is required for the unit. A green LED
indicates AUX POWER on. Start of monitoring function is delayed when
auxiliary power is switched on (default 2 secs delay). In this way false
tripping during power up, caused by initial charging of network spread
capacitance, is avoided.
The DIN96 front-of-panel mounted instrument reads the insulation level
directly in kΩ. The meter has reflection free glass. The ohmmeter and
the triple-zone status LEDs at a glance gives the clear safety message:
General
SEV MEASURING PRINCIPLE
Insulation is measured between the complete galvanically
interconnected DC network and its protective earth. The signal flows to
ground via the path of the insulation fault, the level of flow expresses
the insulation resistance, the direction of flow expresses the fault
polarity. The measuring accuracy is not influenced by any normal kind of
load attached to the network. The detection time for an insulation
fault is 125-165mS.
PATHFINDER/POLARITY FUNCTION
During a Warning or Alarm condition the Polarity LED indicates the polarity causing the trip:
- POSITIVE EARTH FAULT: LED not lit
- NEGATIVE EARTH FAULT: blue LED lit
RELAY OUTPUTS
The unit has non-latching C/O relay outputs for Warning (R1), Alarm (R2)
and System Error (R3). The Alarm and error relays are fail to safety
configured. A trip LED flashes when the trip level is passed, the relay
trips after elapsed delay. The timer resets if the fault is removed
during countdown. Trip levels and delays are settable on unit rear.
Recommended trip level settings will depend on application and priority
of safety hazards.
ANALOGUE OUTPUT
All F and L versions have an isolated analogue output proportional to meter reading.
SYSTEM SUPERVISION
If voltage of the monitored DC system not connected to the unit
input or is to low, the NEG POLARITY LED will flash red, and relay 3
(System Error) will trip. If polarity of the input connection reversed,
the NEG POLARITY LED will flash red and blue, and relay 3 will trip.
Trip of relay 3 will inhibit operation of the warning and alarm relay
and their respective trip LEDs.
SAFETY
When the Voltage Adapter is connected to the instrument, max output from RHx adapters is 60VDC.
Test Function
The built-in test button activates the self test function. A 20kohm resistor is then connected between the negative pole and PE as long as the button is pressed.
Description
KCM169x models for 9- 60VDC
Scale range: 0-30kΩ - ∞ (>33kΩ)
These units are used for industrial, marine and offshore installations.
Start of monitoring function is delayed when auxiliary power is switched on (default 2 secs delay).
Direct connection for 12, 24 or 48VDC systems.
Models:
KCM169C2 & KCM169C2F
KCM169C2G & KCM169C2GF
KCM169C2H & KCM169C2FH
KCM169C2GH & KCM169C2GFH
Description
KCM169x models for 9- 60VDC
Scale range: 0-100kΩ - ∞ (>100kΩ)
These units are used for industrial, marine and offshore installations.
Start of monitoring function is delayed when auxiliary power is switched on (default 2 secs delay).
Direct connection for 12, 24 or 48VDC systems.
Models:
KCM169E & KCM169F
KCM169G & KCM169GF
KCM169EH & KCM169EF
KCM169GH & KCM169GFH
KCM169x models for 60-200VDC
Scale range: <10-5MΩ
These units are used for industrial, marine and offshore installations.
Start of monitoring function is delayed when auxiliary power is switched on (default 2 secs delay).
This unit use the
voltage adapter RH2 for voltage from 60V to max.200VDC.
Models:
KCM169K2 & KCM169L2
KCM169GK2 & KCM169GL2
KCM169K2N & KCM169L2N
KCM169GK2N & KCM169GL2N
KCM169x models for 200-400VDC
Scale range: <10-5MΩ
These units are used for industrial, marine and offshore installations.
Start of monitoring function is delayed when auxiliary power is switched on (default 2 secs delay).
This unit use the
voltage adapter RH4 for voltage systems from 200V to max. 400VDC.
Models:
KCM169K4 & KCM169L4
KCM169GK4 & KCM169GL4
KCM169K4N & KCM169L4N
KCM169GK4N & KCM169GL4N
KCM169x models for 400-800VDC
Scale range: <10-5MΩ
These units are used for industrial, marine and offshore installations.
Start of monitoring function is delayed when auxiliary power is switched on (default 2 secs delay).
This unit use the
voltage adapter RH8 for voltage systems from 400V to max. 800VDC.
Models:
KCM169K8 & KCM169L8
KCM169GK8 & KCM169GL8
KCM169K8N & KCM169L8N
KCM169GK8N & KCM169GL8N
KCM169x models for 800-1200VDC
Scale range: <10-5MΩ
These units are used for industrial, marine and offshore installations.
Start of monitoring function is delayed when auxiliary power is switched on (default 2 secs delay).
This unit use the
voltage adapter RH12 for voltage systems from 800V to max. 1200VDC.
Models:
KCM169K128 & KCM169L12
KCM169GK12 & KCM169GL12
KCM169K12N & KCM169L12N
KCM169GK12N & KCM169GL12N
KCM169x models for 1200-1600VDC
Scale range: <10-5MΩ
These units are used for industrial, marine and offshore installations.
Start of monitoring function is delayed when auxiliary power is switched on (default 2 secs delay).
This unit use the
voltage adapter RH16 for voltage systems from 1200V to max. 1600VDC.
Models:
KCM169K16 & KCM169L16
KCM169GK16 & KCM169GL16
KCM169K16N & KCM169L16N
KCM169GK16N & KCM169GL16N
