IG-302-EN version 01; 18/11/2020
18
Maintenance
General instructions
transforma
.bst-pm: Distribution transformers, hermetically
sealed, immersed in dielectric liquid from 16 to 100 kVA
(single-phase) / from 25 to 315 kVA (three-phase)
7. Maintenance
7.1. Access for maintenance operations
Before performing any maintenance operation on the
transformer, follow the measures required by applicable
legislation, including:
1.
Disconnect all the electrical power sources for the
circuits until the transformer is turned off, interlocking
or blocking the necessary breaking devices to prevent
any power supply.
2.
Check that electrical voltage is not present.
3.
Earth and short-circuit all the electrical power sources.
4.
Using an insulating stick, earth the transformer bushings
and ensure that any static electricity is discharged.
5.
Delimit and mark the work area properly.
6.
Check that the transformer does not leak dielectric
liquid.
Risk of causing irreversible damage to the
transformer or to the electrical installation.
• Contact
Ormazabal
in the event of dielectric liquid
leaks.
Summary of Contents for transforma.bst-pm
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