END TO END TEST

END TO END TEST

1.The sending and receiving of datas from one end to other end is very importent in line protection
2.The Protection Signalling Equipment (PSE) is used in between both end protection panels.
3. Four main tripping signals are send and receive a) Distance protection b) Directional Earth Fault(DEF) c) Pole descripency second stage d) Breaker Failure second stage

FOIP CONNECTIONS

Line diffrential protection
Relay to FOIP panel and FOIP to communication panel connection Drawing

380 KV RELAY SETTINGS

1.LINE DIFFRENTIAL - 1
2.LINE DIFFRENTIAL - 2
3. HIGH IMPEDENCE BB PRO
4. PD & BF
5. UNDER VOLTAGE RELAYS

TIMINGS

1. 380 kv breaker tripping time 14 -15 ms and closing time 78-79 ms
2. Breaker coil current a. Closing coil current 5-6 Amps b. Tripping coil current 13-14.5 Amps
3. PD first stage timeing 500 ms second stage 2.5 s
4. Breaker Filure first stage timeing 100 ms second stage 200 ms

Test reports for 380 KV substation

This is test report for a 380 kv substation.

1. MAIN RELAYS

2. AUX RELAYS

3. GIS TEST REPORT

4. COMMISSIONING