enphase CT-200-Clamp-2A Installation Instructions

I N S T A L L A T I O N I N S T R U C T I O N
Installing Enphase CT-200-Clamp-2A
Use this instruction with the Enphase IQ Gateway quick install guide to install Enphase consumption monitoring current transformers (CTs). The
Enphase IQ Gateway and IQ Combiner use a pair of clamp CTs for monitoring consumption. They perform metering with an accuracy class of
2.5%. Rated at Pollution degree 3, you can use the CT inside electrical equipment in residential or in harsh, industrial conditions. Read and follow all
warnings and instructions in this instruction and in the quick install guide included with your IQ Gateway and available at
http:/ /www.enphase.com/support.
SAFETY
SAFETY AND ADVISORY SYMBOLS
DANGER: This indicates a hazardous situation, which if not
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avoided, will result in death or serious injury.
✓
NOTE: This indicates information particularly important for opti-
mal system operation. Follow instructions carefully.
SAFETY INSTRUCTIONS
DANGER: To reduce the risk of electric shock, always open
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or disconnect the circuit from power-distribution system (or
service) of the building before installing or servicing current
transformers.
DANGER: Risk of electrocution! Do not install CTs when current
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flows in the sensed circuit. Always install CT wires in the terminal
blocks before energizing the sensed circuit.
DANGER: If equipment is used in a manner not specified by
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Enphase Energy, the protection provided by the equipment may
be impaired.
DANGER: Risk of electric shock. Be aware that installation of
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this equipment includes the risk of electric shock. If you wire the
IQ Gateway the main load center before beginning wiring. If the
subpanel cannot be de-energized, a qualified electrician may
safely install the CTs as directed, making sure to connect the
leads and then place the CTs around each wire and latch.
DANGER: Risk of electric shock. Risk of fire. Only qualified per-
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sonnel should troubleshoot, install, or replace the CTs.
✓
NOTE: Because of variances in switchboard design and main
power feed, there may not always be enough space to install CTs.
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NOTE: Do not install the CTs in a switchboard where they exceed
75% of the wiring space of any cross-sectional area within the
equipment.
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NOTE: Perform all electrical installations in accordance with all
national and local electrical codes.
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NOTE: Restrict installation of current transformers in an area
where they would block ventilation openings, or in the area of
breaker arc venting.
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NOTE: Not suitable for Class 2 wiring methods and not intended
for connection to Class 2 equipment.
✓
NOTE: Secure current transformer and route conductors so that
they do not directly contact live terminals or bus.
✓
NOTE: When installing CTs, it is important to match CT and sense
voltage phases. Be sure to consistently identify the two AC lines
at three points: the main load center feed, the IQ Gateway, and
the solar production circuit breaker. The CT with black-red wire
to be connected to L1 and the CT with brown-purple wire to be
connected to L2.
✓
NOTE: Only run active conductors through the CT. The CT can
monitor multiple active conductors. You may run more than one
wire through the CT if all wires are on the same phase and they
fit the opening in the CT.
SPECIFICATIONS
SKU
CT accuracy (error rate)
Max primary supported current
Turns ratio
Pollution degree
Dimensions (H × W × D) (inches)
Aperture diameter (inches)
Primary voltage
Frequency
Operating temperature
Compliance
Black/Red cable
Brown/Purple cable
INSTALLATION
For more information, see the reverse of this document for tips. Refer also
to the IQ Gateway quick install guide.
Preparation
A ) If not already done, de-energize the home load panel and the PV
system.
Remove any pre-installed Consumption CTs
A ) De-energize the line 1, and line 2 conductors circuit to which the
consumption CTs are connected.
B ) Remove the existing CTs.
Install the Consumption CTs
A ) Refer to the diagram on the reverse of this document for wiring.
B ) Install the Consumption CTs on active phases as required:
Locate the arrow on the CT label.
•
Make sure that the AC mains wire(s) are de-energized until you
•
have secured the CT wires in the terminal blocks.
To monitor consumption on Line 1:
Connect the black wire to the black "C1" and the red wire to
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the red "C1" terminal.
Clamp the CT on the main supply Line 1. When the
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consumption CT is on Line 1 conductor, the arrow must point
toward the load (away from the grid).
To monitor consumption on Line 2:
•
Connect the brown wire to the brown "C2" terminal and the
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purple wire to the purple "C2" terminal.
Clamp the CT on the main supply Line 2. When the
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consumption CT is on Line 2 conductor, the arrow must point
toward the load (away from the grid).
Tighten all connections to 5 in-lb (0.6 N m).
•
C ) Close and secure the terminal block door of the IQ Gateway.
D ) Turn on the PV system.
CT-200-CLAMP-2A
<2.5%
200 A
2400
3
2.75 × 2.12 × 0.61
0.87
250 VAC
50-60 Hz
-40 C to 85 C
o o
UL 2808 certified with service entrance
rating, ROHs
To monitor consumption on the line 1
To monitor consumption on the line 2