9
Quick installation guide for RPI M6A M8A M10A inverters
Always adhere to the specifi c regulations applicable in your coun-
try or region
Always adhere to the specifi c regulations defi ned by your grid
operator
For the safety of the user and for the security of your installation,
install safety and protection devices that are required for your
installation environment (example: automatic circuit breaker and/
or overcurrent protection equipment)
2
Use the proper upstream circuit breaker to protect the inverter:
Model
Upstream Circuit Breaker
RPI 6MA
16 A
RPI 8MA
16 A
RPI 10MA
20 A
G N L1
L3
L2
N
L1
L2
L3
PE
To solar inverter AC
plug
The inverter is not capable of feeding in DC residual currents due
to its design. They fulfi ll this requirement in accordance with DIN
VDE 0100-712
The possibilities of faults were examined by Delta without tak-
ing the integrated RCMU (residual-current monitoring unit) into
account When examining these faults in terms of the current
valid installation standards, no danger in combination with a type
A upstream residual-current device (RCD) can occur Therefore
faults that would otherwise require the use of a type B residual-
current device due to the inverter can be excluded
The integrated all-pole sensitive RCMU provides additional
safety RCD Type A can be used for this inverter, according to the
following table
M6A
M8A
M10A
Minimum tripping current of the
RCD
mA 100
100
100
NOTE
The amount of the tripping current of the residual
current device is dependent on the design of
the PV installation and the number of connected
inverters The tripping current of the residual cur-
rent device must not, however, be less than the
specifi ed minimum tripping current.
Important information regarding safety
AC cable requirements
Connect properly sized wires to the correct poles (see table)
AC connector
Amphenol C16-3
Current rating
≤ 25 A
Min / max cable diameter
11 20 mm
Min / Max wire diameter
5 8 mm
2
Recommended torque for terminal
screws
≥ 0.7 Nm
Read and follow the instructions delivered with the AC plug
The AC plug delivered with the inverter can be used with fl exible
or rigid copper cable
When calculating the cross section of the cable, consider:
●
material used
●
thermal conditions
●
cable length
●
type of installation
●
AC voltage drop
●
power losses in cable
Always follow the system installation requirements defi ned for
your country!
Grounding the inverter
The inverter must be grounded via the AC connector’s PE con-
ductor To do this, connect the PE conductor to the designated
terminal of the AC plug
WARNING
Dual Supply
Do not work on this equipment until it is isolated from
both mains and on site generation supplies
Isolate on-site Generating Unit(s) at ………………………………………………….
Isolate mains supply at………………………………………………………
Warning – Only persons authorised by the DNO may remove the main cut out fuse
Markings on the inverter
In some countries, the following labels have to be applied on the
front of each micro inverter Please check applicable national and
local standards and regulations
Warning
Two sources of voltage present
- distribution network
- photovoltaic panels
Isolate both sources before
carrying out any work
