Quadlogic MiniCloset-5c, Installation Manual

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INSTALLATION NOTES
Applicable for the following catalog numbers ¹:
MC5c120VX 03R (CDN 2EL/3M 120/208VX)
MC5c120VX 06R (CDN 2EL/6M 120/208VX)
MC5c120VX 09R (CDN 2EL/9M 120/208VX)
MC5c120VX 12R (CDN 2EL/12M 120/208VX)
= "L" for 0.1 Amp inputs or "H" for CL10 (5 Amp) inputs.
¹ Also applicable when the same meter model number has the suffix: M, RS, or P.
CRITICAL: The installation of the current transformer must be correct or the meter will not read properly. The load-current carrying wires must pass
through the CT in the correct orientation, and the CT wires must be connected to the proper MCI screw terminals. Please see wiring diagram for
reference.
Current transformers (CTs) are used to measure the current drawn by the loads to be metered. CTs must be all 0.1A or 5A and cannot be mixed on the
same meterhead. Within the meter, the current reading from the CT is combined with the voltage reading for the correct voltage phase to calculate the
energy reading. CTs must be in phase with the reference voltage. The MCI inputs are each associated with a particular voltage phase in an A-B-C order.
Input 1 is a phase A CT, input 2 is a phase B CT, input 3 is a phase C CT, input 4 is a phase A CT, and so on in A-B-C-A-B-C order.
For example, a CT which measures a load supplied by phase A must be installed on CT1, CT4, CT7, etc.. Current transformers which measure a load
supplied by phase B must be installed on CT2, CT5, CT8, etc.. Lastly, current transformers which measure a load supplied by phase C must be installed
on CT3, CT6, CT9, etc.
1. For the catalog numbers specified above, each A-B, C-A, and B-C combination is a single meter point (see Table 1 for full listing):
- Meter #1 (M#1) is CT1 and CT2
- Meter #2 (M#2) is CT3 and CT4
- repeat for M#3 to M#12
2. After completing all CT terminations, connect the four (4) current connectors from the MCI board to the meterhead and then remove shorting links for
all meter points that are in use.
3. Follow local codes for installation requirement, e.g. conduit, fused disconnect, distance, and wiring.
4. Installation of 0.1A ("L") inputs and CL10 or 5A ("H") inputs are the same.
5. For three (3), six (6), and nine (9) 3-phase metering points, model numbers:
- MC5c120VX 03R
- MC5c120VX 06R
- MC5c120VX 09R
use meter points M#1-M#3, M#1-M#6, and M#1-M#9, respectively. M#4-M#12, M#7-M#12, and M#10-M#12 are not functional
for three (3), six (6), and nine (9) 3-phase metering points, respectively.
CAUTION: If breakers are energized, shorting links must be installed before:
a) disconnecting the CT headers or
b) replacing or installing meter heads on the panel.
WARNING: Bodily injury or damage may result if shorting links are not installed.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
A
B
C
A
B
C
A
B
C
A
B
C
A
B
C
A
B
C
A
B
C
A
B
C
1
2
3
4
5
6
7
8
9
10
11
12
Table 1. Phase Association Table
Reference
Voltage
Phase
MCI Board
CT #
Meter #
(M#)