Intellimeter i -meter MF3, Installation And User Manual, Page: 7 / 18

Page 7
Intellimeter Canada Inc.
1125 Squires Beach Road, Pickering, ON, L1W 3T9 • Tel: (905) 839-9199
Copyright 2020 © MF Series Manual
3. OPERATION AND TROUBLE SHOOTING
3.1 Metering Rules
1.
Current Transformers (CTs) are directional.
2.
Voltage references must be in phase with the load being metered and from the same source.
Rule #1:

If the CTs are mounted in the opposite direction, the polarity of the CT will be opposite.

The arrow on the CT indicates the direction from LINE to LOAD.
Similarly, the “H1” is on the LINE SIDE.
All Intellimeter milli-Amp current transformers 100:0.8A, 200:0.1A, 400:0.1A and 600:0.1A have
self-shorting protection built into the device. They can safely be open circuited while under load.
External Current Transformers (CTs) Twisted Pair #18-14 stranded colour code
#1
Intellimeter CTs
100A (ICI30CT108-B)
White (+)
Black (-)
#2
Intellimeter CTs
200A (ICI30CT21)
White (+)
Black (-)
#3
Intellimeter CTs
400A (ICI30CT41)
White (+)
Black (-)
#4
Intellimeter CTs
600A (ICI30CT61)
White (+)
Black (-)
#5
Instrument CTs
X000:5A + 20 Turn CTs
White (+)
Black (-)

The maximum length the CT leads can be extended is 30metres.

1 twisted pair wire only for each CT.