Test Report for HT VCB Relays 2013 DOC

Title	Test Report for HT VCB Relays 2013
Author	R. Venkatesan
Pages	130
File Size	257.2 KB
File Type	DOC
Total Downloads	282
Total Views	856

Summary

Durga Switchgears – EA 2616 A Grade Electrical Contractors, Page 1a Consultants & Testing Engineers Client: M/S TVS MOTOR COMPANY LIMITED Byathahalli Village, Mysore – 571 311 TEST REPORT FOR OVER CURRENT & EARTH FAULT RELAY Date of Test : 26TH DEC 2013 Location : SUB STATION - I Feeder Name...

Description

Durga Switchgears – EA 2616 A Grade Electrical Contractors, Consultants & Testing Engineers Page 1a Client: M/S TVS MOTOR COMPANY LIMITED Byathahalli Village, Mysore – 571 311 TEST REPORT FOR OVER CURRENT & EARTH FAULT RELAY Date of Test : 26TH DEC 2013 Location : SUB STATION - I Feeder Name :Outgoing Transformer – 4 (1500 KVA) Relay Make : GEC ALSTOM Type / Sl. No. : CDG 31 / 130340150239004 CT Sec. : 5 Amps System Voltage : 11KV CT RATIO: 100/5 – RELAY OVER CURRENT SET AT 75%. i.e., RELAY WILL PICK-UP AT MORE THAN 75 AMPS REASON: - TRANSFORMER HT FULL LOAD CURRENT IS 78 AMPS. SETTINGS:- DESCRIPTION Plug Setting in % Plug Setting in Amps Time Lever DMT OVERCURRENT 75 3.75 0.5 3 EARTH FAULT 10 0.5 0.3 3 SECONDARY INJECTION TEST: % of current Applied current in Amps Graph Time in seconds Actual time in seconds E/F Current in Amps Graph time in seconds Actual Time in seconds R- Phase Y- Phase B- Phase 200 % 7.50 5.00 4.74 --- 4.75 1.00 3.00 2.64 500 % 18.75 2.15 2.20 ---- 2.23 2.50 1.29 1.39 1000% 37.5 1.50 1.48 ---- 1.52 5.00 0.90 0.88 Description R - Phase Earth Fault B - Phase Pick-up Current in Amps 3.98 0.49 3.85 Closing time in seconds 39.41 44.2 55.2 Remarks: - Test results are satisfactory. PRECOMMISSIONING – RELAY TESTING – HIPOT TEST – TRANSFORMER OIL FILTRATION- TRANSFORER/HT/LT BREAKER REPAIRING NO. 8/5, JOHN VASU STREET, MADHAVARAM MILK COLONY, CHENNAI – 600 051. Durga Switchgears – EA 2616 A Grade Electrical Contractors, Consultants & Testing Engineers Page 1b Client: M/S TVS MOTOR COMPANY LIMITED Byathahalli Village, Mysore – 571 311 TEST REPORT FOR INSTANTANEOUS EARTH FAULT RELAY Date of Test : 26TH DEC 2013 Location : SUB STATION - I Feeder Name :Outgoing Transformer – 4 (1500 KVA) Relay Make : GEC ALSTOM Type / Sl. No. : CAG 14 / 13003499944002 CT Sec : 5 Amps System Voltage : 11KV SETTINGS:- PLUG SETTING : 0.5 Amps SECONDARY INJECTION TEST: PLUG SETTING CURRENT APPLIED OPERATION 0.5 0.48 OK 0.75 0.73 OK 1.0 0.99 OK 1.25 1.23 OK 1.5 1.51 OK 1.75 1.76 OK 2.0 1.99 OK Remarks: - Test results are satisfactory. PRECOMMISSIONING – RELAY TESTING – HIPOT TEST – TRANSFORMER OIL FILTRATION- TRANSFORER/HT/LT BREAKER REPAIRING NO. 8/5, JOHN VASU STREET, MADHAVARAM MILK COLONY, CHENNAI – 600 051....