1.0 OBJECTIVE
To lay down the procedure for operation after M.S.E.B. power resumption.2.0 SCOPE
This SOP shall be applicable for Electrical power system of the plant.3.0 RESPONSIBILITY
Technician/ Engineer/ Executive4.0 ACCOUNTABILITY
Head of Department5.0 PROCEDURE
5.1 Verify that all three phases are healthy on 11 KV side i.e. voltages between R-Y, Y-B, B-R it should be between 10.5 to 11.2 KV. Close the H. T. panel VCB by turning the switch to close position.
5.2 Check the secondary voltage in main PCC for both transformers. It should be between 410 to 440 Volts.
5.3 Open the breakers of bus coupler 1 and 2 by pressing the emergency push button.
5.4 Open the D.G. incomer breaker by pressing the emergency push button.
5.5 Close the breakers of transformer 1 and 2 by releasing emergency push button.
5.6 Breaker of APFC panel will close automatically.
5.7 Entire supply is now changed over.
5.8 D.G. Set 1, 2 & 3 will get off automatically after 3 minutes intervals.
5.9 After resumption of power, ensure Utility – PMCC, PCC-MFG and MLDB are on operational condition.
Related: SOP for Operation after M.S.E.B. Power Failure
6.2 KV - Kilowatt
5.2 Check the secondary voltage in main PCC for both transformers. It should be between 410 to 440 Volts.
5.3 Open the breakers of bus coupler 1 and 2 by pressing the emergency push button.
5.4 Open the D.G. incomer breaker by pressing the emergency push button.
5.5 Close the breakers of transformer 1 and 2 by releasing emergency push button.
5.6 Breaker of APFC panel will close automatically.
5.7 Entire supply is now changed over.
5.8 D.G. Set 1, 2 & 3 will get off automatically after 3 minutes intervals.
5.9 After resumption of power, ensure Utility – PMCC, PCC-MFG and MLDB are on operational condition.
Related: SOP for Operation after M.S.E.B. Power Failure
6.0 ABBREVIATIONS
6.1 SOP - Standard Operating Procedure6.2 KV - Kilowatt
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