Electrical Connection - Recom RCM SP-D Series User Manual

4.3 Electrical Connection

Danger hint
Danger
Warning
Warning
Attention
Attention
4.3.1 Inverter PV string connection
4.3.1.1 The following principles must be considered when making electrical connections to the
inverter:
1) Disconnect the AC breaker on the grid side.
2) The DC switch of the inverter must be turned to the "OFF" position.
3) The number and type of the PV panels connected in each PV string best to be same.
4) Make sure the maximum output voltage of each PV string does not exceed 600V.
4.3.1.2 DC connector assembly procedure
1) Select the appropriate photovoltaic cable:
Cable type
General photovoltaic cable
2) Peel off the DC cable insulation sleeve for 7 mm, as shown in Figure 4-8:
A high voltage in the conductive part of the inverter may cause an electric
shock. When performing any installation on the inverter, make sure that the AC
and DC sides of the inverter are completely de-energized.
Do not ground the positive or negative pole of the PV string, otherwise it will
cause serious damage to the inverter.
Static may cause damage to the electronic components of the inverter. Anti-
static measures should be taken during the repairing or installation.
Do not use other brands or other types of terminals other than the terminals
in the accessory package. RECOM TECHNOLOGIES has the right to refuse all
damages caused by the mixed-use of terminals.
Moisture and dust can damage the inverter, ensure the cable gland is securely
tightened during installation. The warranty claim will be invalided if the inverter
damaged by the cable connector not well installed.
Scope (mm²)
2.5-4.0
Wire cross-setional area 2.5-4mm
Figure 4-8
Conductor cross-setional area (mm²)
7mm
2
Recommended value
(mm²)
4.0
17