ABB Fimer PVS980-58-1818kVA-I, Commissioning And Maintenance Manual

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6 Safety instructions
Installation and maintenance safety

Electrical safety
These instructions are for all personnel who work on the inverter, its input and output
cables, the transformer or photovoltaic generator.
WARNING! Obey these instructions to prevent injury or death, or damage to the
equipment.
•
If you are not a qualified electrician, do not do electrical installation or
maintenance work.
•
Obey all installation safety standards. This can require, among other things, the use of
personal protection equipment (PPE), such as arc-proof clothing, arc-proof masks,
protective footwear, protective gloves, eye protection and hearing protection. High
power inverter installations have high fault currents. Select appropriate arc-proof
clothing (for example, in the US, a rating of 40 cal/cm
2
is required).
•
Standard IEC/EN 62109-2 (section 4.8.3.6) requires that, as the inverter is not
provided with full protection against shock hazards on the photovoltaic generator, you
install and use the inverter in a closed electrical operating area only. There is no RCD
protection inside the inverter.
•
Do not do work on the photovoltaic generator, or the inverter, or its input or output
cables, when the inverter is connected to an electrical power system, or to the
photovoltaic generator. Voltage may be present when the panels are exposed to light.
•
Before you do work in the inverter cabinet, isolate the AC line cables and busbars from
the electrical power system with the disconnector of the power system transformer.
Also, isolate the inverter from the photovoltaic generator with the safety switch of the
generator or by other means. The optional AC disconnectors or optional breakers do
not isolate the AC output cables and terminals of the inverter from the electrical power
system. The optional DC disconnectors do not isolate the DC input fuses, cables or
terminals from the DC voltage supplied by the photovoltaic generator. There are
service access areas that remain energized during service, but sufficient guards are
provided for indirect contact.
•
There are more than one live circuits. Refer to the single line diagram.
•
CSA requirements: AC output circuits are isolated from the enclosure. AC system
grounding, when required by the Canadian Electrical Code, is to be done in the
installation.
•
Before you do work in the inverter cabinet, turn off or isolate the auxiliary voltage
supply from the inverter.
•
The inverter auxiliary power can be supplied from an external source (standard) or
from internal auxiliary power transformers. Make sure that auxiliary power is
disconnected.
•
The inverter power section doors are equipped with sensors that monitor door status.
If the door is opened during inverter operation, the inverter will signal a fault and
disconnect from the grid. Do not modify the operation of these door sensors.
•
Do not operate the inverter with the doors open, even in fault tracking conditions. The
inverter doors act as arc hazard protection. If a highly unlikely arc flash incident
happens when the inverter doors are open, the arc-flash proof protection equipment
might not provide sufficient protection.