ABB Fimer PVS980-58-4348kVA-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 and conductors, the transformer or photovoltaic (PV) generator.
WARNING! Obey these instructions to prevent injury or death, or damage to the
equipment.
WARNING! There is voltage in the DC input when the PV modules are exposed to
light.
•
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).
•
The 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 PV generator, 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 PV generator, or the inverter, or its input or output cables, when
the inverter is connected to an electrical power system, or to the PV generator.
•
Before you do work in the AC-, DC, LCL- or power section of the inverter, isolate the
AC busbars from the electrical power system with the disconnector of the power
system transformer. Also, isolate the inverter from the PV generator with the safety
switch of the PV generator or by other means. The optional AC breaker does not
isolate the AC output busbars and terminals of the inverter from the electrical power
system.
•
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 power cabinet, turn off or isolate the auxiliary
voltage supply from the inverter.
Note: The inverter may remain energized during accessing of the control
section, IP20 touch protection is provided against accidental contact with live
parts.
WARNING! There are more than one live circuits, see the single line diagram.
•
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.
•
Do not operate the inverter with the doors or panels open, even in fault tracking
conditions. The inverter doors and panels act as arc hazard protection. If a highly