8
Gateway
11.2013
5.2 Lighting Surge Protection
Lightning does not actually need to strike the equipment
or building where PV system is installed to cause damage.
Often, a strike nearby will induce voltage spikes in the
electrical grid that can damage equipment
Since the AEconversion Limited Warranty does not cover
“acts of God” such as lightning strikes, and since lightning
strikes can occur anywhere, it is best practice to install
surge protection as part of any solar installation.
6.0 Installation Procedure
Please note the important safety information listed in
1.1 as well as the Assembly, Installation, Operation and
Maintenance Warnings listed in 2.1.
Before installing the AEconversion PLC Gateway, the PV
system must be mounted and electrically installed. This
must be done in accordance with the corresponding
Micro-Inverter Manual, in compliance with all listed
safety instructions.
In the following section, an overview is given on how
the gateway is to be installed.
Step 1 Measure AC at the Electrical Utility Connection
Step 2 Mount the Gateway
Step 3 Connect to Inverters and Grid
Step 4 Connect RS485 Bus
Step 5 Install and Start Software
6.1 Measure AC at the Electrical Utility Connection
To ensure proper system operation, measure AC line
voltage at the electrical utility connection to confirm
that it is within range. Acceptable voltage ranges and
tolerances are shown below.
For EU-Installations:
Single-Phase 230 V
183 to 263 VAC
L1 to neutral
For US-Installations:
Three-phase 208 VAC
183 to 229 VAC
L1 to L2 to L3
106 to 132 VAC
L1,L2, L3 to neutral
Single-Phase 240 VAC
211 to 263 VAC
L1 to L2
106 to 132 VAC
L1, L2 to neutral
NOTE:
Check the labeling on the AC cabling to be sure
that the cable matches the electrical utility service at
the site. Use 208 VAC (208 VAC three-phase) cabling at
sites with three-phase 208 VAC service, or use 240 VAC
cabling at sites with 240 VAC single-phase service. Use
240 VAC cable at sites with 208 single-phase service.
Please refer to page 12 (208V) and 13 (240V) for wiring
diagrams.
NOTE:
The operation at grids with neutrals which
are not grounded is not allowed!
6.2 Mount the Gateway
The gateway is designed to be mounted in the control
cabinet with 35mm DIN rail according to EN50022.
Alternatively, the housing can be mounted using the
two supplied wall mounting tabs in accordance with the
current installation regulations of each country.
6.3 Connect to Inverters and Grid
Please note 4.4 for explanations to the connections of
the gateway.
Before installing the AEconversion PLC Gateway, the
PV system, including the AEconversion Micro-Inverters
must be mounted and electrically installed. This must
be done in accordance with the corresponding Micro-
Inverter Manual, in compliance with all listed safety
instructions.
The inverter is equipped with one AC terminal on
the right side of the connection area, a 20A 3-pin AC
connector. The supply is phase to phase 208V, 230V or
240V depending on version. The inverters are connected
using 20A 3-pin AC extension cables and distribution
blocks, with one input and three outputs, to form a
continuous AC power circuit. Any open AC connections
must be sealed with a protective cap.
The number of micro-inverters to be connected in one
power circuit (AC circuit branch) is limited by the circuit
breaker. This circuit breaker acts also as a pole switch to
disconnect the inverters from the mains.
For EU installations, a 16A Type B Circuit Breaker shall be
installed.
For US-Installations, a two pole20A Circuit breaker,
e.g.Trip curve No 730-3, shall be used.