9
Quick installation guide for RPI M50A 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 required safety and protection devices that are applicable
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 M50A
100 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 is certifi ed accord-
ing VDE 0126 1-1/A1:2012-02 §6 6 2 for a tripping current of
300 mA RCD Type A can be used for this inverter, according to
the following table
M50A
Minimum tripping current of the RCD
mA
≥300
NOTE
The value of the tripping current mainly depends
on the quality of the solar modules, the size of
the PV array and environmental conditions (e g
humidity) The tripping current of the residual
current device must not be less than the speci-
fi ed minimum tripping current.
Fuses
►
When you remove the cover from the fuse sec-
tion, protection degree is no longer IP65
►
Remove the cover only when the inverter is in a
dry environment
Damaged fuses must be replaced with fuses of the same size
You will lose warranty if you use fuses with a higher current
Important information regarding safety
AC cable requirements
Use properly sized wire to connect to the correct poles (see
table)
AC connector
China Aviation Optical-
Electrical Technology
Co PVE5T125KE36
Current rating
100 A
Min / max cable diameter
36 44 mm
Min / Max wire size
35 mm
2
Recommended torque for terminal
screws
3 Nm
Read and follow the instructions delivered with the AC plug
AC plug delivered with the inverter can be used with fl exible cop-
per 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
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
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
Warning
Two sources of voltage present
- distribution network
- photovoltaic panels
Isolate both sources before
carrying out any work
