Quadlogic MiniCloset-5c, Installation Manual

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Chapter 4 Installation
© COPYRIGHT 2009
Quadlogic Controls Corporation
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B) CT installation
i. Follow CT installation procedure on page 15.
ii. For each load, determine which voltage phase supplies the power. Then use a CT
with the corresponding color code for that load (Black or Red).
iii. Route the load wire through the CT as shown in the diagram
iv. Connect the CT secondary wires to the MCI according to the following procedure:
v. Every CT MUST be connected to an MCI input which is referenced to the correct
phase (see chart).
vi. This type of meter is configured as a Residential meter with (24) 1-phase meters.
For these installations, the meter measures (24) 1-phase loads. Each metered load
has 1 CT. The single CT from a particular metered load must be connected to
adjacent inputs as shown in the chart. Note that ALL meter points use Line 1 and
Line 2.
Installation Notes
CRITICAL:
The Phase Association and Polarity of the current transformers must be followed or meter will
not be installed correctly.
1. Each CT has a white side, small white dot, or "H1" marking on only one side of its exterior
moulding. Locate this marking since it is critical that the wires are passed through the CT
in the correct direction, assuring the correct polarity.
Two wires coming from the line side are passed through each current transformer (CT).
Line 1 (Wire 1): Line 1 should be passed through the CT from the side with the white
side, dot/H1 marking.
Line 2 (Wire 2): Line 2 should be passed through the CT from the side WITHOUT the
white side, dot/H1 marking. Note that these are opposite polarities.
Figure 4-12. Line 1 and Line 2 passed through a current transformer.
2. The MCI runs CT terminals CT#1 to CT#24 with each terminal connected to Meter #1
(M#1) to Meter #24 (M#24). The number of CT terminal and meter connections will
depend on the number of suites available. For example:
- M#1 connects to CT#1
- M#2 connects to CT#2
- Repeat for M#3 to M#24