EN
68
8.2.4 Inverter total de-energization procedure
WARNING –
B
Some inverter parts may be subject to
hazardous voltages for the operator. Before performing any
work on the inverter, follow this procedure for safely isolate
the inverter.
HOT SURFACE –
c
When the device has just been switched
off, it may have hot parts as a result of overheating of the
heated components (e.g.: transformers, accumulators, coils,
etc.) so be careful where you touch.
8.2.4.1 PRELIMINARY CHECKS
Weather conditions:
It is of paramount importance to evaluate the weather conditions in
the risk assessment prior any intervention on the equipment. This
procedure can be applied only in case of dry environment. Don’t
proceed in case of rain (even light) or high humidity.
PPE Check:
Verify the integrity of the PPE that is going to be used to perform
the operations.
Equipment check:
• Check the voltage tester is working correctly:
- Perform a general integrity check of the instrument;
examine the test terminals, its integrity and make sure
they are properly fixed; make sure the batteries level is
enough high (don’t use the instrument in case the message
“LOW BATTERY” is present) or replace them.
- Perform test of the instrument using an energized AC socket
and a DC voltage source (example: battery in the service car)
with known voltage level; in case the instrument is provided with a
self-test feature, follow the instructions provided in the instrument
manual to carry out the self-test.
• Check the voltage tester is working correctly:
• Check the DC current probe is properly working, make sure to
perform the “ZERO-OFFSET” procedure and to select suitable
DC measurement range.
8.2.4.2 PPE
WARNING –
B
All the following activities (till the completion of
the procedure) must be performed wearing the PPE.
Wear the appropriate PPE for carrying out the operations (overall
resistant to electric arc, dielectric helmet with visor, insulating
gloves).
8.2.4.3 Check the absence of dangerous voltages on
inverter enclosure respect ground
Check the absence of dangerous voltage on the inverter chassis.
The measurement point are between inverter chassis not-painted
part and the Protective earth (PE) external connection point
(04)
outside the inverter.
04
Содержание FMR-PVS-10-TL-SX
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