The digitally controlled MCM165x 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).
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 MCM165x can be connected to each IT-system.
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.
-Direct connection up to 690V 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
-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
-Optional slave indicator
Borna niroo karan company (Brnika) is Exclusive Representative of Megacon , in the purchase, sales, consulting and distribution and industrial equipment and measurement equipment, including Insulation Monitoring and so is active .
100-120, 200-240, 380-415 or
440-460VAC, 40-70Hz (Fuse 0.5A)
12-24, 48 or 110VDC (Fuse 2A)
Up to 20mA, max 500R
Up to 10V, min 100kohm
(other on request)
-20 to +70ºC
scale description :
The ohmmeter and the triple-zone status LEDs give at a glance the clear safetymessage:
-HEALTHY(green zone )
High Voltage Adaptors up to 25kVAC for MCM165x series:
Voltage Adaptors ARx and ANx are used together with Insulation Guard MCM165x when the monitored line voltage is higher than 690VAC.
AR7 up to 7kVAC
AR14 up to 14kVAC
AN7 up to 7kVAC
AN14 up to 14kVAC
AN25 up to 25kVAC
Terminal 1must be disconnected during meggertest.