CHAPTER II

SUBSTATIONS AND SWITCHING STATIONS

Para No.          Subject
20200 Introduction
I.   ORGANIZATION
20201 Organizational Set up
20202 Duties of Chief Traction Foreman, Power Supply Installations
. II. OPERATION OF SUB-STATIONS
20203 Introduction
20204 Inspection Book and Log Book at Sub-Stations
20205 Overload Capacity of Traction Transformer
20206 Tap Setting on Traction Transformer
20207 Tests on Transformer Oil
20208 Purification of Transformer Oil
20209 Oil Purification Plant
20210 Insulation Resistance During Drying out
20211 Protective Devices
20212 Operation of Temperature Alarm or Trip
20213 Operation of Differential Protection
20214 Buchholz Relay
. III. GUIDING NOTES ON MAINTENANCE
20215 Introduction
20216 Transformers
20217 Circuit Breakers and Interruptors
20218 Guidelines for Maintenance of Circuit Breakers and Interruptors
20219 Lead Acid Batteries
20220 Guidelines for Maintenance of Batteries
20221 Protective Relays
20222 Guidelines for Maintenance of Switching Stations
. IV. MAINTENANCE SCHEDULES
20223 Schedules of Inspection
20224 General
Fortnightly Maintenance
20225 General Inspection by a PSI Supervisor Battery
20226 Battary
Monthly Maintenance
20227 Bonding and Earthing
20228 Oil Level in Transformers, CBs and CTs etc.
20229 Insulators
20230 Traction Transformers
20231 Operating Mechanism of Circuit Breakers & Interruptors
20232 Isolators
20233 Bus bars, Clamps and Connectors
20234 Control and Relay Panels
Quarterly Maintenance
20235 Batteries & Battery Charger
20236 PTs & CTs
20237 Booster Transformers
20238 Auxiliary Transformers
Half Yearly Maintenance
20239 General
20240 Traction Transformers
20241 Isolators
20242 Control and Relay Panels
Yearly Maintenance
20243 General
20244 Lightning Arrestors
20245 Bonding and Earthing
20246 Traction Transformers
20247 Isolators
20248 Bus bars and Connectors
20249 Control and Relay Panels
20250 Batteries and Battery Chargers
20251 PTs and CTs
20252 Special Maintenance Schedules for Minimum Oil Circuit Breakers and Interruptors
20253 Pre monsoon Checks
20254 Overhaul Schedule for Equipment