Delta RPI M6A Installation Guide

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Installation guide for solar inverters RPI M6A M8A M10A EU V5 EN 2022-08-15
► Always follow the specic regulations of your country
or region.
► Always follow the specic regulations of your energy
provider.
► Install all the stipulated safety and protective devices
(such as automatic circuit breakers and/or surge prote-
ction devices).
► Protect the inverter with a suitable upstream circuit
breaker:
Model Upstream circuit breaker
RPI M6A/M8A
16 A
RPI M10A 20 A
G N L1 L3L2
N
L1
L2
L3
PE
to the
inverter
Residual current circuit breaker
Due to its design, the inverter cannot supply the grid with
DC residual current. This means that the inverter meets
the requirements of DIN VDE 0100-712.
Possible error events were assessed by Delta in accor-
dance with the current installation standards. The asses-
sments showed that no hazards arise from operating the
inverter in combination with an upstream, type A residual
current circuit breaker (FI circuit breaker, RCD). There is
no need to use a type B residual current circuit breaker.
Minimum tripping current of the type A resi-
dual current circuit breaker
≥100 mA
The required tripping current of the residual
current circuit breaker depends rst and
foremost on the quality of the solar modules,
the size of the PV system, and the ambient
conditions example, humidity). The tripping
current must not, however, be less than the
specied minimum tripping current.
Integrated residual current monitoring unit
The integrated, universal current-sensitive residual current
monitoring unit (RCMU) is certied in accordance with
VDE 0126 1-1/A1:2012-02 §6.6.2.
Permitted grounding systems
Grounding system TN-S TN-C TN-C-S TT IT
Allowed Yes Yes Yes Yes No
Requirements for the grid voltage
3P3W Voltage 3P4W Voltage
L1-L2
400 V
AC
±20 % L1-N 230 V
AC
±20 %
L1-L3 400 V
AC
±20 % L2-N 230 V
AC
±20 %
L2-L3 400 V
AC
±20 % L3-N 230 V
AC
±20 %
Cable requirements
The AC plug provided with the inverter has the following
technical characteristics:
Plug type Amphenol C16-3
Nominal current ≤ 25 A
Minimum / maximum cable diameter
11 / 20 mm
Minimum / maximum wire cross-sec-
tion
5/8 mm
2
Recommended tightening torque for
clamping screws
≥ 0.7 Nm
The AC plug can only be used with a exible copper cable.
Consider the following factors when calculating the cable
cross-section:
● Cable material
● Temperature conditions
● Cable length
● Installation type
● Voltage drop
● Loss of power in the cable
► Always follow the installation regulations for AC cables
applicable in your country.
► France: Follow the installation instructions of UTE 15-
712-1. This standard contains the requirements for
minimum cable diameters and for avoiding overheating
due to high currents.
► Germany: Follow the installation instructions of
VDE 0100-712. This standard contains the require-
ments for minimum cable diameters and for avoiding
overheating due to high currents.
Using external grid and system protection
The German standard VDE-AR-N 4105, Section 6.1, requi-
res external grid and system protection with a coupling
switch for PV system larger than 30 kVA.
Alternatively, VDE-AR-N 4105, Section 6.4.1, allows the
use of an inverter with an internal coupling switch when
this switch disconnects the inverter from the grid in less
than 100 ms.
This inverter meets the requirements of VDE-AR-N 4105.
No external grid and system protection is required.
Connecting the grid (AC)

Delta RPI M6A Specifications

General

Brand	Delta
Model	RPI M6A
Category	Inverter
Language	English