ABB PVS800-57B, Руководство по обслуживанию, Страница: 10 / 78

10 Safety instructions
Installation and maintenance safety

Electrical safety
These warnings are for all personnel who do 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, EN531).
•
Standard IEC/EN 62109-2 (section 4.8.3.6) requires that, as the inverter is not
provided with full protection against shock hazard on the photovoltaic array, you install
and use the inverter in a closed electrical operating area. 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.
•
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 DC disconnectors do not isolate the DC input fuses, cables or terminals
from the DC voltage supplied by the photovoltaic generator.
•
Before you do work in the inverter cabinet, set to 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 also auxiliary power is
disconnected.
•
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, even the arc-flash proof protection
equipment might not provide sufficient protection.
•
Before you do work on the inverter, apply a temporary grounding for work (AC and DC
side).
•
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.
•
Live parts in the inverter cabinet are protected against direct contact when all
protective plastic covers and metallic shrouds are in place.
•
Do not do insulation or voltage withstand tests on the inverter or inverter modules.
•
With the grounding options selected, one of the poles of the photovoltaic generator is
grounded, and therefore, the other pole has full voltage against ground (up to 1000 V).