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INSTALLATION - INVERTER
For inverter installation instructions and warranty exclusions refer to the documents supplied with the
inverter. The following points must also be observed when installing the inverter:
Warning:
Inverters have masses between 14 kg and 26 kg. Proper safe handling procedures must be
employed when installing or handling these inverters.
•
Inverters must be sheltered from direct sunlight and other sources of heat.
•
Inverters must be installed in a well-ventilated place so as to allow good circulation of air around the
unit. Avoid places where air cannot circulate freely around the unit.
•
The inverter must not be installed in a location accessible to children.
•
The mounting structure must be capable of supporting the inverter weight.
•
If the inverter is to be mounted on a combustible surface such as wood, a heat resistant backing (such
as a fibre cement board) must be installed behind the inverter. Backing must extend a minimum of
20 mm past all edges and sides of the inverter.
•
Inverter mounting clearances and requirements outlined in the relevant inverter documentation must
be adhered to. Ignoring recommended mounting instructions can cause permenant damage to the
inverter from water ingress and can reduce inverter efficiency due to inadequate heat dissapation.
•
The ABB UNO-2.0-I-OUTD features an isolation transformer permitting the functional earthing of PV
arrays. The default factory setting, negative pole to ground, is the preferred grounding configuration to
maintain maximum performance and should remain unaltered unless otherwise instructed by
regulators or electricity network operators. Incorrect configuration may cause damage to the system
and photovoltaic panels.
•
Sealing plugs provided with the inverter must be inserted into any unused string inputs to maintain the
inverter’s IP rating. For SMA inverters, sealing plugs must inserted into the rear of the Sunclix DC plug
connectors. For Power-One/ABB inverters verify the presence of watertight rubber cap seals on DC
input connectors and install them should they be absent.
•
For the Power-One/ABB PVI series of inverters ensure that:
o
For multiple string systems, the inverter is configured for ‘independent’ channels (factory
default setting).
o
For single string systems, the inverter is configured for ‘parallel’ channels.
Refer to inverter documentation for detailed instructions on configuration of channels.
POWER-ONE/ABB INVERTER DC CONNECTIONS
Multi-Contact Safety Locking Clips must be installed over the negative connectors of all DC connections at
the inverter. The purpose of these devices is to prevent accidental disconnection of live DC at the inverter.
When the Safety Locking Clip is in place, a custom tool is required to separate the connectors.
Multi-Contact (MC)
Positive (+) Connector: PV-KBT4
Multi-Contact (MC)
Negative (-) Connector: PV-KST4
Multi-Contact (MC)
Safety Locking Clip: PV-SSH4
