This section provides step-by-step instructions for installing the EMI Monitoring System enclosure.
-
Mount the EMI Monitoring System at the planned location.
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Install the conduit between the EMI Monitoring System and each HFCT using separate conduit for each HFCT run.
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Install the conduit for 120VAC power. Minimum circuit size: 20A 120VAC power supply free of non-linear loads. Consider a circuit with isolated ground.
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Install the conduit and wire for data connection. Cutsforth recommends CAT6a or fiber connection.
This section provides conduit layout information for the standard painted or stainless steel enclosure styles and the optional legacy configuration enclosure.
|
Color on Diagram |
Conduit Run Description |
Conduit Trade Size* |
Wire Description |
Purpose |
Max. Cable Length |
Wire Supplied By |
|---|---|---|---|---|---|---|
|
Green |
Monitoring System to case ground |
N/A |
Single conductor, 12 AWG |
Enclosure case ground |
20 ft (6.1 m) |
Cutsforth |
|
Blue |
Monitoring System to Control Room |
3/4 in (2 cm) |
Cat6a Cable |
Data Output to Control Room |
N/A |
Plant Electrical Contractor |
|
Purple** |
HFCT to Monitoring System |
3/4 in (2 cm) |
RG-223 is preferred |
CT Signal In |
200 ft (61 m) |
Plant Electrical Contractor |
|
Red*** |
Plant Power to Monitoring Enclosure |
3/4 in (2 cm) |
120VAC Power (20A dedicated circuit – preferably with isolated ground) |
Power for the Monitoring System |
N/A |
Plant Electrical Contractor |
*Enclosures do not come with conduit holes pre-drilled. Conduit sizing and hole placement is customizable. The cable glands and conduit fittings are intended to be installed by the plant electrical contractor. Please follow all local electrical standards applicable for gland and conduit installation. Additionally, ensure that the selected cable gland is equally or higher rated than the NEMA 4X rating of the equipment/enclosure in which they are installed.
**Install each HFCT run in individual conduit runs and do not share conduits so as to avoid any cross talk between CT circuits.
***A disconnecting switch or circuit breaker must be included in the installation. It must be suitably located, easily reached, and it must be marked as the disconnecting device for the equipment.
|
Part |
Name |
|---|---|
|
A |
Cutsforth EMI Monitoring System |
|
B |
Green: 12 AWG wire for enclosure case ground |
|
C |
Blue: 3/4 in (2 cm) conduit for data output to control room |
|
D |
Purple: 3/4 in (2 cm) conduit from HFCT to monitoring system (one conduit run per HFCT) |
|
E |
Red: 3/4 in (2 cm) conduit for plant power |
|
Component |
Standard Recommendation |
Recommendation for High-Corrosion Environments |
|---|---|---|
|
Conduit type |
Galvanized rigid metal conduit (RMC) |
Rigid Aluminum Conduit (RAC) |
|
Conduit fittings type |
Malleable, NEMA 4X rated or greater |
Aluminum |
|
Strut channel type |
Hot dipped galvanized, back-to-back |
316 Stainless steel |
|
Mounting hardware |
316 Stainless steel |
316 Stainless steel |
|
Liquid flexible metallic conduit |
Type HCX |
Type HCX |