Maintenance And Replacement; Pe Connection And Leakage Current - LIVOLTEK Hyper-2000 User Manual

• Before touching the DC cables, operator must use a measuring device to ensure
that the cable is voltage-free.
• The operator must follow all warnings on the PV strings and in its manual.
• All electrical connections must be in accordance with local and national standards.
Only with the permission of the local utility grid company, the inverter can be
connected to the utility grid.

2.6 Maintenance and Replacement

• High voltage generated by the equipment during operation may cause an electric
shock, which could result in death, serious injury, or serious property damage. Prior
to maintenance, power off the equipment and strictly comply with the safety
precautions in this document and relevant documents.
• Maintain the equipment with sufficient knowledge of this document and using
proper tools and testing equipment.
Before maintaining the equipment, power it off and follow the instructions on the
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delayed discharge label to ensure that the equipment is powered off.
• Turn off the AC and DC switches of the inverter when maintaining the electric
equipment or power distribution equipment connected the inverter.
• For personal safety maintenance personnel must wear appropriate personal
protective equipment (like insulation gloves and protective shoes) for the inverter
maintenance.
• Place temporary warning signs or erect fences to prevent unauthorized access to
the maintenance site.
• Follow the procedures of maintenance stipulated in the manual strictly.
• Check the relevant safety and performance of the inverter rectify any faults that
may compromise the inverter security performance before restarting the inverter.
To avoid any other unforeseeable risk, contact immediately your dealer, if there is
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any issue found during operation.
• The equipment can be powered on only after all faults are rectified. Failing to do
so may escalate faults or damage the equipment.

2.7 PE Connection and Leakage Current

• All inverter is incorporate a certified internal Residual Current Monitoring (RCM) in
order to protect against possible electrocution and fire hazard in case of a
malfunction in the PV array, cables or inverter.
• There are 2 trip thresholds for the REMA as required for certification (lEC 62109-
2:2011). The default value for electrocution protection is 30mA, and for slow rising
current is 300mA.
• The inverter, with built-in RCM, will exclude possibility of DC residual current to
6mA, thus in the system an external RCD (type A) can be used (≥30mA).
• High leakage Current!
• Earth connection essential before connecting supply.
DANGER
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