CHAPTER IX

PREPARATION FOR COMMISSIONING

Para No.  Subject
20900 Introduction
20901 Reference to Rules and Statutory Rules
20902  Precommissioning Inspections
20903 Defect and Deficiency Lists
. I. TRACTION SUB-STATIONS
20904 Planning of Power Supply
20905 Commissioning of Traction Transformers
20906 Precautions during Commissioning of Traction Transformer
20907 Tests on Transformer Windings
20908 Circuit Breakers and Interruptors
20909 Isolators
20910 Current and Potential Transformers
20911 Lightning Arrestors
20912 Shielding and Earthing
20913 Busbars and Insulators
20914 Clearances
20915 Auxiliary Power Supply for Traction Sub-stations & Control Room
20916 Batteries and Battery charger
20917 General
20918 General Inspection of Sub-stations and Commissioning
. II. EHV TRANSMISSION UNES AND 25 kV FEEDER UNES
20919 20919 Detailed Inspection of Transmission Lines
20920 Compliance with Rules and Approved Drawings
20921 Visual Inspection
20922 Clearances and Sag
20923 Earthing
20924 Insulators and Insulation Resistance
20925 Continuity Test
20926 Accessories
20927 General Inspection and Energization
20928 25 kV Feeders
. III. PROTECTIVE EQUIPMENT
20929 Testing of Protective Relays
20930 Inspection of Setting of Relays and Calibration of Meters
20931 Protective Devices at Sub-stations
20932 Control Circuits and Wiring
20933 Fuses
20934 Insulation and Lead Burden Measurement
20935 Current Transformer Ratio and Polarity Test
20936 Primary Injection Test
20937 Voltage Transformer Ratio and Polarity Check
20938 Electrical Operation of Indicators and Associated Devices
20939 Secondary Injection Test
20940 Alarm and Trip Check
20941 Load Test
20942 Confirmatory Test of OHE Protective Relays
. IV. SWITCHING STATIONS AND BOOSTER TRANSFORMER STATIONS
20943 Power Supply
20944 Installation of Equipment
20945 Clearances
20946 Auxiliary Transformers and Booster Transformer
20947 General
20948 Interlocking
20949 Feeding Posts
20950 Number Plates and Boards
20951 Earthing and Bonding
V. REMOTE CONTROL EQUIPMENT
20952 Importance of Remote Control
20953 Manning of Sub-stations and Switching Posts
20954 Level Measurements
20955 Detailed Inspection of RC Equipment
20956 Interlocking of Bridging Interruptors
20957 General Inspection by Divisional Officers.
. VI. OVERHEAD EQUIPMENT
20958 Detailed Joint Inspection of OHE
20959 Compliance with Latest Drawings
20960 Infringements
20961 Important Points to be Checked
20962 Notice to be Displayed - Caution Boards and Number Plates
20963 Recording of Defects and Rectification.
20964 General Inspection of .OHE by Divisional Officers.
20965 Lapping and Polishing of OHE
20966 Procedure for Final Tests of OHE
20967 Insulation Tests
20968 Continuity Tests
20969 Divisional Officers' Joint Certificate
. VII. GENERAL ARRANGEMENTS
20970 Preparation for Operating Electrified Services
20971 Preparation by the Engineering Department
20972 Preparation by the S&T Department