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AC Input/Output Connection
CAUTION!! Before connecting to AC input power source, please install a separate AC breaker between the
inverter and the AC input power source. This will ensure that the inverter can be safely disconnected during
maintenance and fully protected from over-current. The recommended spec of AC breaker is 32A.
CAUTION!! There are two power terminal blocks with "IN" (Input) and "OUT" (Output) markings. DO NOT
mistakenly connect to the wrong connectors.
WARNING! All wiring must be performed by a qualified personnel.
WARNING! It's very important for system safety and efficient operation to use appropriate cable size for AC
input connection. To reduce risk of injury, please use the proper recommended cable size as below.
Suggested cable requirement for AC wires
Model
X-4KW-M
Please follow these steps to implement AC input/output connection:
1. Before making AC input/output connection, be sure to enable DC protector or disconnector first.
2. Remove insulation sleeves for about 10mm for the five screw terminals.
3. Insert AC input wires according to polarities indicated on terminal block and tighten the terminal screws. Be
sure to connect the grounding wire (
→Ground (yellow-green)
L→LINE (brown or black)
N→Neutral (blue)
WARNING:
Be sure that the AC power source is disconnected before attempting wire connections.
4. Insert AC output wires according to polarities indicated on terminal block and tighten terminal screws. Be
sure to connect the grounding wire (
→Ground (yellow-green)
L→LINE (brown or black)
N→Neutral (blue)
5. Make sure the wires are securely connected.
CAUTION: Appliances such as air conditioner required at least 2~3 minutes to spool up because it needs to have
enough time to balance refrigerant gas inside of circuits. If a power shortage occurs and recovers in a short
period of time, it may cause damage to your connected appliances. To prevent this from happening, please check
with manufacturer of air conditioner if it has time-delay function before installation. Otherwise, this inverter will
trigger overload fault and cut off output to protect your appliance but sometimes it may still causes damage to
the air conditioner.
Cable (mm
Gauge
12 AWG
) first.
) first.
7
)
2
Torque Value
4
1.2 Nm
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