Quadlogic MiniCloset-5c, Руководство по установке

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Chapter 4 Installation
© COPYRIGHT 2009
Quadlogic Controls Corporation
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v. Run wires through conduit to MC5 back box. Connect to screw terminals on fuse
block. Black – VA; Red – VB; Blue – VC.
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 Blue). Note: The Red phase is not
directly measured with a CT.
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 Figure 4-8).
This type of meter is configured as a Commercial meter with (12) 2-phase meters. For these
installations, the meter measures (12) 2-phase loads. Each metered load has 2 CTs. The 2
CTs from a particular metered load must be connected to adjacent inputs as shown in the
chart. Note that meter 1 uses phases A and C, meter 2 uses phases A and C, meter 3 uses
phases A and C, and so on.
Installation Notes
CRITICAL:
The Phase Association and Polarity of the current transformers must be followed or meter
will not be installed correctly.
1. Current transformers must be in phase with Reference Voltage. The MCI runs in an
A-C phase rotation (See Figure 4-8) and each two CT connections repeat an A-C, A-
C, A-C pattern