ABB Fimer PVS980-58-4348kVA-I, Commissioning And Maintenance Manual

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Safety instructions 7
unlikely arc flash incident happens when the inverter doors or panels are open, the
arc-flash proof protection equipment might not provide sufficient protection.
•
Do not work on the control cables when power is applied to the inverter or to the
external control circuits. Externally supplied control circuits can cause dangerous
voltages in the inverter even when the main power on the inverter is off.
•
Do not do insulation or voltage withstand tests on the inverter or power modules.
•
The installation must be done according to the local requirements (for example,
ANSI/NFPA 70, Canadian electric Code, and so on).
•
Utility interconnection may require approval from authority with local jurisdiction.
Note:
With DC side functional grounding (negative as standard), one of the
poles of the PV generator is grounded, and therefore, the other pole has full
voltage against ground (up to 1500 V).
Grounding
These instructions are for all personnel who are responsible for the grounding of the
inverter.
WARNING! Obey these instructions to prevent injury or death, damage to the
equipment and electromagnetic interference.
•
Only qualified electricians are permitted to do grounding work.
•
Always ground the inverter and adjoining equipment. Correct grounding also
decreases electromagnetic emissions and interference. Follow the site’s policy on
disconnecting the inverter from AC and DC.
•
The cross-sectional area of protective bonding conductors for connection to the main
earthing terminal need not exceed 25 mm
2
Cu or an equivalent cross-sectional area
for other materials. Refer to standard IEC 60364-5-54.
•
In a multiple-inverter installation, connect each inverter separately to the protective
earth (PE) busbar of the switch board or the transformer.
•
Avoid grounding loops and keep grounding cables at least 0.5 m away from AC
conductors, as current can be generated to a grounding loop by electromagnetic
coupling.
•
External EMC filters are not permitted at the AC output of the inverter.
•
Do not install the inverter on a TN (grounded) system.
Note: The normal touch current of the inverter can be more than 3.5 mA AC or
10 mA DC, use a fixed protective earth connection. Refer to standard IEC/EN
62109, 5.2.5.
Electric welding
WARNING!
Do not fasten the cabinet by electric welding. FIMER does not
assume any liability for damages caused by electric welding as the welding circuit
can damage electronic circuits in the cabinet, as well as the doors or the cabinet
itself.