enphase CT-100-SPLIT ROW Installation Instruction

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-100-SPLIT ROW
The Enphase Envoy gateway uses a set of three 100A split core Current Transformers(CTs) each for production and consumption monitoring. They perform metering
with an accuracy class of 1%. Read and follow all warnings and instructions in this instruction and in the Quick Install Guide included with your Envoy and available at
https://enphase.com/contact/support.
SAFETY
SAFETY AND ADVISORY SYMBOLS
DANGER: This indicates a hazardous situation, which if not avoid-
+
ed, 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 circuit from power-distribution system (or service) of
building before installing or servicing current transformers.
DANGER: Risk of electrocution! Do not install CTs when current
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flowing in the sensed circuit. Always install CT wires in the termi-
nal 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 this
+
equipment includes risk of electric shock. If you wire the IQ Envoy
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-
+
sonnel should troubleshoot, install, or replace the CTs.
✓
NOTE: Because of variance in switchboard design and main power
feed, there may not always be enough space to install CTs.
✓
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 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 wiring the Envoy for production and consumption
metering, be sure to install the current transformers (CTs) exactly
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 two AC lines
at three points: the main electrical panel feed, the Envoy, 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 line 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.
✓
NOTE: For indoor use only.
Model: CT-100-SPLIT-ROW
SPECIFICATIONS
SPECIFICATION
CT type
CT accuracy (error rate)
Maximum primary current
Turns ratio
Dimensions (in mm)
Aperture
Maximum conductor size support
Primary voltage
Frequency
Operating temperature
Compliance
INSTALLATION
For more information, see the reverse of
this document for tips. Refer also to the
Envoy Quick Install Guide.
Preparation
A ) If not already done, de-energize
the home load panel and the PV
system.
Installing the CTs for production monitoring
A ) Refer to the diagram on the reverse of this document for wiring.
B ) Locate the arrow on the CT label and make sure that the AC mains
wire(s) are de-energized until you have secured the CT wires in the
terminal blocks.
To monitor production on Line 1:
To monitor production on Line 2:
•
To monitor production on Line 3:
•
Tighten all connections to 0.56 Nm.
•
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 "I1•" terminal and the blue wire to
-
the "I1" terminal.
Clamp the CT on active Line 1 of the solar production circuit with
-
the arrow pointing toward the load (away from the solar array).
Connect the white wire to the "I2•" terminal and the blue wire to
-
the "I2" terminal.
Clamp the CT on active Line 2 of the solar production circuit with
-
the arrow pointing towards the load (away from the solar array).
Connect the white wire to the "I3•" terminal and the blue wire to
-
the "I3" terminal.
Clamp the CT on active Line 3 of the solar production circuit with
-
the arrow pointing towards the load (away from the solar array.
Connect the white wire to the "I1•" and the "I1" to the blue "C1"
-
terminal.
Clamp the CT on the main supply Line 1. When the consumption
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CT is on Line 1 conductor, the arrow must point toward the load
(away from the grid).
CT-100-SPLIT-ROW
Split core
<1%
100A
2500
40.1 x 26.4 x 26.7
9.8 mm diameter
(2/0) AWG or 67.4mm sq.
250VAC
50-60Hz
-40 to 85 degree C
CE, RoHS compliant