enphase CT-400-SPLIT-INT Quick Install Manual

Q U I C K I N S T A L L G U I D E - E N
Installing Enphase 400 A Consumption CTs
Use this document with the Enphase IQ Gateway Metered Quick Install Guide to install Enphase consumption monitoring current transformers
(CTs). The Enphase IQ Gateway Metered ships with two CTs for monitoring single-phase production and consumption. The CTs that ship with the
box are designed to fit most residential installations. In certain cases, such as small commercial sites, a larger CT may be needed to fit larger cross-
section conductors. This 400 A Consumption CT has been designed for such applications. Read and follow all warnings and instructions in this
guide and the quick install guide included with your IQ Gateway.
SAFETY
SAFETY AND ADVISORY SYMBOLS
DANGER: This indicates a hazardous situation, which, if not
+
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 or
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disconnect the circuit from the power distribution system (or
service) of the building before installing or servicing the 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
+
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 to the main electrical panel before beginning wiring.
If the subpanel cannot be de-energized, a competent 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 competent
+
personnel should troubleshoot, install, or replace the CTs.
✓
NOTE: Because of variances in electrical panel design and main
power supply, there may not always be enough space to install
CTs.
✓
NOTE: Do not install the CTs in a electrical panel where they
exceed 75% of the wiring space of any cross-sectional area
within the equipment.
✓
NOTE: Perform all electrical installations in accordance with all
national and local electrical standards and best practice.
✓
NOTE: Restrict installation of current transformers in an area
where they would block ventilation openings, or in the area of
breaker arc venting.
✓
NOTE: Secure current transformer and route conductors so that
they do not directly contact live terminals or bus.
✓
NOTE: When wiring the IQ Gateway Metered for production and
consumption metering, install the current transformers (CTs)
precisely as described for your application.
✓
NOTE: When installing CTs, it is important to match CT and sense
voltage phases. Be sure to consistently identify the three AC
conductors at three points: the main electrical panel supply, the
IQ Gateway, and the PV production circuit breaker. Wire colors
may not always consistently identify L1, L2, and L3. If in doubt,
use a multimeter to check.
✓
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 in the same phase and they fit
the opening in the CT.
✓
NOTE: For indoor use only.
✓
NOTE: Not suitable for connecting to safety extra
low-voltage circuits (SELV) or equivalent.
(MODEL: CT-400-SPLIT-INT)
SPECIFICATIONS
SPECIFICATION
CT type
CT accuracy (error rate) when
used with the IQ Gateway
Maximum primary supported
current
Turns ratio
Dimensions (mm)
Aperture (mm)
Supported conductor size
Primary voltage
Frequency
Operating temperature
Humidity
Compliance
Maximum operating altitude
Pollution degree
INSTALLATION
For more information, see the reverse of this document. Refer also to the
IQ Gateway Metered Quick Install Guide.
Preparation
A ) If not already done, de-energize the main electrical panel and the
PV system.
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 white wire to the white "C1" and the blue wire to
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the blue "C1" terminal.
Clamp the CT on the main supply Line 1. When the Consump-
-
tion CT is on the Line 1 conductor, the arrow must point toward
the load (away from the grid).
To monitor consumption on Line 2:
•
Connect the white wire to the white "C2" terminal and the blue
-
wire to the blue "C2" terminal.
Clamp the CT on the main supply Line 2. When the Consump-
-
tion CT is on the Line 2 conductor, the arrow must point toward
the load (away from the grid).
To monitor consumption on Line 3:
•
Connect the white wire to the white "C3" terminal and the blue
-
wire to the blue "C3" terminal.
Clamp the CT on the main supply Line 3. When the Consump-
-
tion CT is on the Line 3 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 Gateway.
D ) Turn on the PV system.
CT-400-SPLIT-INT
Split-core
<2%
400 A
2500:1
93 × 111 × 25
50 × 50
Up to a maximum size of 150 mm
conductors
250 VAC maximum
50–60 Hz
-40°C to 70°C
95%
IEC 61869-1
2600 m
2
2