3. Installation
3. Installation
.23.
.22.
3.4.2.1 DC connection high voltage danger notice
CAUTION
RISK OF ELECTRIC SHOCK
Do not touch an energized DC conductor. There are high voltages present when PV modules
are exposed to light causing a risk of death due to an electric shock from touching a DC
conductor!
Only connect the DC cables from the PV module to the inverter as described in this manual.
CAUTION
POTENTIAL DAMAGE TO THE INVERTER DUE TO OVERVOLTAGE
The DC input voltage of the PV modules must not exceed the maximum rating of the inverter.
(see section 10 “Specifications”)
Check the polarity and the open-circuit voltage of the PV strings before connecting the DC
cables to the inverter.
Confirm proper string length and voltage range before connecting DC cable to the inverter.
3.4.3 Connect grid side of inverter
1). Connect the three (3) AC conductors to the three (3) AC terminals marked “L1”, “L2” and
“L3”.Refer to local code and voltage drop tables to determine the appropriate wire size
and type.
2). Connect the grounding conductor to the terminal marked “PE” (protective earth, the
ground terminal).
Over-Current Protection Device (OCPD) for the AC side
To protect the inverter's AC connection line, we recommend installing a device for protection
against over-current and leakage, with the following characteristics noted in Table 3.2:
WARNING
An over-current protection device must be used between the inverter and
the grid.
NOTE
Use AL-CU transfer (bi-metallic) terminal or
anti-oxidant
grease
with
aluminum
cables
and
terminals.
Table 3.2 Rating of grid OCPD
3.4.3.1 Connecting the inverter to the utility grid
All electrical installations must be carried out in accordance with the local standards and the
National Electrical Code® ANSI/NFPA 70 or the Canadian Electrical Code® CSA C22.1. The
AC and DC electric circuits are isolated from the enclosure. If required by section 250 of the
National Electrical Code®, ANSI/NFPA 70, the installer is responsible for grounding the system.
The grid voltage must be within the permissible range. The exact operating range of the inverter
is specified in section 10 “Specifications”.
Inverter
Rated
voltage(V)
Rated output
current (Amps)
Current for protection
device (A)
152.0/144.3
167.1/158.8
200
250
Solis-100K-5G
Solis-110K-5G
150.4
480
200
Solis-125K-HV-5G
220/380,230/400
220/380,230/400
Solis-50K-LV-5G
Solis-100K-5G-SA
131.2
157.5
220
200
200
200
250
Solis-60K-LV-5G
Solis-110K-5G-SA
220
220/380,230/400
220/380,230/400
167.1/158.8
152.0/144.3
152.0/144.3
167.1/158.8
200
250
S5-GC100K
S5-GC110K
150.4
480
200
S5-GC125K-HV
220/380,230/400
220/380,230/400
3.4.3.2 Wiring procedure
CAUTION
RISK OF ELECTRIC SHOCK.
Prior to starting the wiring procedure, ensure
that the three-pole circuit breaker is switched off and cannot be reconnected.
NOTE
Damage or destruction of the inverter's electronic components due to
moisture and dust intrusion will occur if the enclosure opening is enlarged.
CAUTION
Risk of fire if two conductors are connected to one terminal. If a
connection of two conductors to a terminal is made, a fire can occur.
NEVER CONNECT MORE THAN ONE CONDUCTOR PER TERMINAL.
NOTE
Use M10 crimp terminals to connect to the inverter AC terminals
.
S5-GC50K-LV
131.2
157.5
220
200
200
S5-GC60K-LV
220