Maintenance of distribution transformers

1) must be carried out before servicing the power switch before a trip down and hoisted the blackout signs. Then examine the electrical distribution transformers Verify repair pen repair device is power transformers powered off before maintenance;
2) maintenance must be two people there, a repair, a guardianship;
3) Maintenance personnel must be  mcb circuit breaker  with power distribution unit of the professional electrician;
4) Maintenance personnel must wear protective equipment, the use of electrical insulated tools
5) Replace appliances must be consistent with the original specifications, prohibit the use of unqualified substitutes;
6) Maintenance, not free to electri cenergy meter  the original distribution equipment wiring, electrical switches must not be arbitrarily removed first wife;
7) maintenance ends, should be separated from power distribution unit, and then begin progressively closing the supply side is energized, make sure the power is turned on with the electroscope, and then down a power test
8) while repairs are completed, removed the power switch on a power outage and hanging signs.