MMC850 Megger, MMC850 Datasheet
MMC850
Manufacturer Part Number
MMC850
Description
Clamp Multimeters & Accessories Multi Conductor Clamp
Manufacturer
Megger
Datasheet
1.MMC850.pdf
(2 pages)
Specifications of MMC850
Accuracy
+/- 5 %
Frequency
400 Hz
Ranging
100 A
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
MMC850
Multi-core AC digital clamp meter
DESCRIPTION
The NEW Megger MMC850 offers a unique solution to
current measurement in multi-core cables, without the need
to split cores. Simply clamp the MMC850 to a multicore
cable and read the current flowing.
Conventional current clamp meters have been available for
many years and are an accepted method of non-intrusive
current
measurement. However these instruments can only
measure current in a single core cable, requiring multi-core
cables to be split before a core can be measured.
Unlike conventional clamp meters, the MMC850 has a com-
plex array of Planer magnetic sensor coils to calculate the
current flowing in the conductors of multicore cables with
either 2 or 3 cores, and in either flat or round section cable,
up to 100 A. The convenience and potential time saving
from using the multi-core clamp is considerable.
A single button switches the clamp between multi-core and
single core operation, ensuring the MMC850 is the only
clamp meter you need to carry.
The MMC850 has a tough and lightweight clamp head, allow
good access to awkward locations and cables.
The inner jaw clamp centralises the cable to be measured
ensuring best accuracy.
The MMC850 is suitable for supply frequencies from 45Hz to
400Hz. Current measurement to 200 A on single core and
100 A on multi-core cables is possible, with a resolution to
0.1 A, so covering the majority of power applications includ-
ing Military/Aviation.
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SAFETY
The tough case is manufactured in ABS and the contoured
design fits comfortably in the hand with a positive finger
guard.
The MMC850 meets the requirements of IEC1010-2-032,
Cat III 600 V , and is rated as safe for connection and
disconnection to live conductors.
APPLICATIONS
Use it anywhere where you want to measure current with-
out breaking a circuit or splitting cables. The MMC850 can
also be used in place of traditional clamp meters, when
commissioning, or for general maintenance work in
electrical machinery and installations.
In many applications, the indication of voltage alone is
insufficient to verify that an appliance is working.
For instance, having fitted a new thermostat to a water
heater, a neon may indicate voltage, but the element may be
open-circuit. With the MMC850 you can verify and measure
the current simply by clamping round the outer cable
sheath.
When fault-finding, a voltmeter may indicate a voltage at the
terminals of a single-phase motor, but not help diagnose the
problem any further. With the MMC850, the distinction may
be made between a high current potentially indicating a
shorted winding or locked rotor and an open-circuit fault,
such as a disconnected termination or burnt-out winding.
Single, two or three core cable
measurement
Flat or round section cables
No need to split wires
Cable centralising clamp
Backlit display
50Hz and 60Hz supplies
IEC 1010-2-032, CAT III 600 V safety
protection
Multi-core AC digital clamp meter
MMC850
MMC850 Summary of contents
Page 1
... Cat III 600 V , and is rated as safe for connection and disconnection to live conductors. APPLICATIONS Use it anywhere where you want to measure current with- out breaking a circuit or splitting cables. The MMC850 can also be used in place of traditional clamp meters, when commissioning, or for general maintenance work in electrical machinery and installations. ...
Page 2
... OPTIMISED CABLE TYPES The advanced measuring techniques used by the MMC850 enables the measurement of current in 1 3-core cables of most configurations optimised for the most commonly encountered cable types (see table), and will give an approximation of the current in others. Optimised Cables European H05VV-F (3-core) 1.5mm 2 H05VV-F (3-core) 2 ...