5. Grid maintenance skill enhancement training, NKLP Lahore (2nd semester training) Sr.No. Course contents 1 Introduction, Safety principles, Electric shock, First aid, Artificial respiration, Low voltage hazards, Absolute limits of approach, Touch potential and Step potential, Use of PPE (Personnel Protective Equipment), Grounding & Bonding, PTG (Portable Temporary Ground/Temporary earthing) installing and removing practice, Fire fighting 2 Job planning 3 Permit-to-work (PTW) 4 Grid maintenance tools & plant (T&P): Identification and use of hand tools / machine tools, Care and upkeep of tools) 5 Station inspection as per inspection check sheet of each equipment at the grid station: Power transformers, HV circuit breakers, 11 kV circuit breakers, Current transformers (CT), Potential transformers (PT)/(VT), Capacitor voltage transformers (CVT), Isolators / disconnect switches, Lightning arresters, Bus bars, Power cables, Station grounding system, Over head grounding shield, DC batteries, DC battery chargers, GIS system, Shunt reactors, Shunt capacitor banks, Static var compensation system, etc. 6 Preventive maintenance of grid station equipment as per Training course book procedures, SOP for grid station inspection and maintenance, Manufacturer’s recommendations, this includes time-based maintenance as well as operation counter based maintenance including inspections, testing and overhauling 6-1 Power transformers including on load tap changer (OLTC) (Oil type and Vacuum type) and Off load tap changer: Scheduled maintenance and 1 testing 6-2 HV circuit breakers: Scheduled maintenance and testing 6-3 11 kV circuit breakers: Scheduled maintenance and testing 6-4 Current transformers (CT): Scheduled maintenance and testing 6-5 Potential transformers (PT)/(VT): Scheduled maintenance and testing 6-6 Capacitor voltage transformers (CVT): Scheduled maintenance and testing 6-7 Isolators / disconnect switches: Scheduled maintenance and testing 6-8 Lightning arresters: Scheduled maintenance and testing 6-9 Bus bars: Scheduled maintenance and testing 6-10 Power cables and control cables: Scheduled maintenance and testing 6-11 Station grounding system: Scheduled maintenance and testing 6-12 Over head grounding shield: Scheduled maintenance and testing 6-13 DC batteries: Scheduled maintenance and testing 6-14 DC battery chargers: Scheduled maintenance and testing 6-15 GIS substation system: Scheduled maintenance and testing 6-16 Shunt reactors: Scheduled maintenance and testing 6-17 Shunt capacitor banks: Scheduled maintenance and testing 6-18 Static var compensation system: Scheduled maintenance and testing 6-19 HV DC switchgear: Scheduled maintenance and testing 2 6. Protection and Instrumentation (P&I) skill enhancement training, NKLP Lahore (2nd Semester training) 3 Sr.No. Course contents 1 Introduction, Safety principles, Electric shock, First aid, Artificial respiration, Low voltage hazards, Grounding & Bonding, Absolute limits of approach, Use of PPE (Personnel Protective Equipment), PTG (Portable Temporary Ground/Temporary earthing) installing and removing practice, Fire fighting 2 Job planning 3 Permit-to-work (PTW) 4 P&I tools & plant (T&P): Identification and use of hand tools / machine tools, Care and upkeep of tools) 5 Control and Protection relays panels inspection as per inspection check sheet of each control panel and protection relay panel at the grid station 6 Preventive inspection and testing of protection relays and control equipment as per Training course book procedures, SOP for grid station inspection and maintenance, and manufacturer’s recommendations. This includes time based inspections and testing. 6-1 Over current earth fault protection relays: Inspection and at site testing of Electro-mechanical, Solid state and Digital/Numerical Over current earth fault protection relays 6-2 Differential protection relays/transformer protection scheme: Inspection and at site testing of Electro-mechanical, Solid state and Digital/Numerical Differential protection relays 6-3 Annunciation and alarm circuits: Fundamental theory and Inspection and at site testing and verification 6-4 Energy meters: Fundamental theory, Types, Programming of Digital meters, Lab and at site testing and calibration of Single-phase energy meters, Three-phase energy meters, Maximum demand indicating (MDI) meters, etc. 6-5 Distance protection relays/ Line bay protection