FIMER_PVS-175-TL A.1 Version_Product manual_EN_RevC-
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Inverter total de-energization and safe access
The purpose of this paragraph is to provide instructions for de-energize the PVS-175-TL inverters in
order to allow access to active parts inside the inverter. The procedure describes the steps to perform
a total isolation and thus includes operations on devices that are located outside the inverter. The total
isolation approach consider the disconnection of the inverter from any possible voltage source to
which the inverter may be connected. The test of residual voltage potentially present inside the inverter
is included in this procedure. This procedure is intended exclusively to be used by skilled or trained
persons in accordance with safety standards EN 50110-1 and EN 50110-2 (CENELEC/CEN) or
equivalent standards. Furthermore, only these skilled or trained persons are permitted to carry out
the procedure.
Operator and maintenance personnel skills/prerequisites
WARNING – B The customer has civil liability for the qualification and mental or physical
state of the personnel who interact with the equipment. They must always use the personal
protective equipment (PPE) required by the laws of the country of destination and whatever
is provided by their employer.
ATTENTION – A Personnel in charge of using and maintaining the equipment must be skilled
for the described tasks and must reliably demonstrate their capacity to correctly interpret
what is described in the manual.
ATTENTION – A For safety reasons, the installation must be performed by qualified
installers and/or licensed electricians in accordance with the existing regulations in the
country of installation and in accordance of all safety rules for performing electrical works.
The installers must have demonstrated skills and knowledge of the inverter’s structure and
operation.
FORBIDDEN – H Maintenance operation carried out by a person who is NOT qualified, is
intoxicated, or on narcotics, is strictly forbidden.
The following job requirements and qualifications are required to operate on the inverter:
• Compliance with all legal standard in force in the installation country to perform the electrical work
described on this procedure.
Clothing and protection of personnel
The following Personal Protective Equipment (PPE) are required to perform any intervention on the
inverter:
• Dielectric helmet EN397 – EN50365 (1000Vac-1500Vdc) with visor EN166 grade 8.
• Insulating composite gloves class 0 EN60903 (1000Vac-1500Vdc) resistant to electric arc class 2
(7kA) EN61482-1-2 in combination with protective overglove in leather EN420 – EN388.
• Work overall UNI EN 11612 A B1 C1 resistant to electric arc class 2 (7kA 1s.) CEI EN 61482-1-2.
• Safety shoes.
Safety equipment and tools
The following equipment and tools are required to perform any intervention on the inverter:
• Disconnect tool for DC side (PV) connectors (provided with PVS-175 Installation KIT).
• Voltage detector (EN 61243-2) capable of 3kVdc and up to 1kVac.
• DC current clamp.
• Safety tags “work in progress, do not operate”.
• Padlocks.
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