Slide 1

DS 1G CLOSING OP MANDATORY CONDITIONS CASE 11. CHK BAY11- ES 3GD-1 OPEN2. CHK 2G - OPEN3. CHK 3GD-1 - OPEN6. CHK CLOSE 1GXBB-IIBB-I11DL3GD13GD24. CHK 3GD-2 - OPEN11GD-1BAY 11- BB-1 PT2G5. CHK 11DL - OPEN1GSHORT-LINE

DS 1G CLOSING OP MANDATORY CONDITIONS CASE 21. CHK BAY7- DS 21G CLOSED2. CHK BAY7-DS 22G CLOSED3. CHK BAY7- 12DL CLOSED5. CLOSE 1GXBB-IIBB-I4. CHK 2G - CLOSEDBAY 7- BB COUPLER2G1GX21G22G12DLSHORT-LINE

MANDATORY REQUIREMENTS: BUS COUPLERBB1- ISOLATOR: 21G BB2- ISOLATOR: 22G ISOLATOR 21G EARTH SWITCH 21GDCOMPLETE SLD

X22GBB-IIBB-I21G12DL21GD22GDISOLATOR 22G EARTH SWITCH 22GD

BAY ALARMS

XBB-IIBB-I22G21G12DL21GD22GD

XBQPS2-BB-IIBQPS2-BB-I11DL3G3GD11GDXSHORT-LINEDS 3G CLOSING OP MANDATORY CONDITIONS3GD21. CHK CB 11DL - OPEN2. CHK 3GD-2 - OPEN3.CHK 3GD-1 - OPEN8. CLOSE 3G4.CHK 1GD - OPENDS-1DS-2BQPS1-BB-IBQPS1-BB-II

XBQPS2-BB-IIBQPS2-BB-I3GD2GDXQAYUMABAD GRID STATION BBCBKCR TX-LINEDS 3GD-2 CLOSING OP MANDATORY CONDITIONS3G1. CHK DS-3G - OPEN5. CLOSE 3GD-22. CHK FAR END CB-OPEN4. CHK VD SHOWS 3 GREEN LIGHTS3. CHK FAR END: GD - CLOSED

ES 3GD-1 CLOSING OP MANDATORY CONDITIONSXBB-IIBB-I1.CHK DS-3G - OPEN2.CHK 1G - OPEN3.CHK 2G - OPEN4. CLOSE 3GD-12G1G3G3GD1KCR TX-LINE

ES 1GD CLOSING OP MANDATORY CONDITIONSXBB-IIBB-I1. CHK DS-3G - OPEN2. CHK 1G - OPEN3. CHK 2G - OPEN4. CHK CLOSE 1GD2G1G3G1GDKCR TX-LINE

X2GBB-IIBB-I1G11DL3G3GD11GDGDXCBSHORT-LINE3GD2

DS-1DS-2BB-IBB-II

BQPS-1BQPS-22. CHK WHETHER POSITIONS OF ALL ES, DS & CB MATCH AT DCS, LOCAL PANEL & INDIVIDUAL EQUIPMENTS 3. CHK WHETHER ANY PORTABLE EARTH IS CONNECTED AT CONCERNED LINE AT SWITCH YARD4.NO INDICATION OR WARNING ON LOCAL PANEL & DCS5.NO ALARM OR INDICATION AT CONCERNED RELAY PANEL1.OPERATOR AVAILABLE AT LOCALBEFORE OPERATIONS CHECK1.AFTER EVERY OPERATION, THE STATUS OF THE OPERATED EQUIPMENT SHOULD BE CHECKED AT DCS & AT LOCAL PANELDURING OPERATIONS CHECK

OPEATIONAL CHECKSBAY ALARMSOR2.CHECK CABINET 1- LP LOCKOUT ALARM3.CHECK OIL PRESSURE LOW LOCKOUT ALARM4.CHECK CIRCUIT NO POWER - ALARM5.CHECK VD FAULT SIGNAL ALARM6.CHECK INDICATING & SIGN ALARM1.PHASE DEVIATION ALARMBAY ALARMS

SKILL TEST PROCEDURE

1. GM OPERATION RECOMMENDS INDIVIDUALHV SWITCHING PROCEDUREWRITTEN TESTPASSFAILINDIVIDUAL QUALIFIED FOR HV SWITCHINGPANEL INTERVIEWFAILPASS

High Voltage Presence Detection Device

Red Lights indicate the presence of High Voltage on the Out/In-coming line. Green Lights indicate the absence of High Voltage on the Out/In-coming line.

Red light on one phase indicates the presence of High Voltage on the one phase of the Tx line due to induction. Induction on one phase is indicated by an alarm signalBAY ALARMSOR2.CHECK CABINET 1- LP LOCKOUT ALARM3.CHECK OIL PRESSURE LOW LOCKOUT ALARM4.CHECK CIRCUIT NO POWER - ALARM5.CHECK VD FAULT SIGNAL ALARM6.CHECK INDICATING & SIGN ALARM1.PHASE DEVIATION ALARMBAY ALARMS

BAY ALARMSOR2.CHECK CABINET 1- LP LOCKOUT ALARM3.CHECK OIL PRESSURE LOW LOCKOUT ALARM4.CHECK CIRCUIT NO POWER - ALARM5.CHECK VD FAULT SIGNAL ALARM6.CHECK INDICATING & SIGN ALARM1.PHASE DEVIATION ALARMBAY ALARMS

ALARMS/ TRIP NOTIFICATIONS PROCEDURE - NIGHT

1. ALARM/ TRIP NOTIFICATION OBSERVED BY AREA OPERATOR2. CONTROL ROOM OPERATOR3. SHIFT MANGER / DGMCONSULTS WITH SHIFT TECHHIGHLOW4. GM/DGM - ELECTRICALDETERMINES SEVERITY OF FAULTNOTES DOWN & RESETS FAULT7. DIAGNOSIS AND FAULT RECTIFICATION

Mechanical InterlockWithdraw the spring plug for deactivating the interlockFlags/ Indications on the Local Panel

RED: DEVICE IN CLOSED STATEDEVICE COULD BE AN ES/ DS OR CB

GREEN: DEVICE IN OPEN STATEDEVICE COULD BE AN ES/ DS OR CBIN THIS CASE THE ES(3GD-2) IS CLOSED.IN THIS CASE THE CB IS IN OPEN POSITION

DS 2G CLOSING OP MANDATORY CONDITIONS CASE 21. CHK BAY7- DS 21G CLOSED2. CHK BAY7-DS 22G CLOSED3. CHK BAY7- 12DL CLOSED5. CLOSE 2GXBB-IIBB-I4. CHK 1G - CLOSEDBAY 7- BB COUPLER1G2GX21G22G12DLSHORT-LINE

XBQPS2-BB-IIBQPS2-BB-I3GD2GDXCBSHORT-LINEDS 3GD-2 CLOSING OP MANDATORY CONDITIONS3G1. CHK DS-3G - OPEN5. CLOSE 3GD-22. CHK BQPS-1 CB-OPEN4. CHK VD SHOWS 3 GREEN LIGHTS3. CHK BQPS-1: GD - CLOSED

DS-1BQPS-1DS-2BB-IBB-II

ES 3GD-1 CLOSING OP MANDATORY CONDITIONSXBB-IIBB-I1. CHK DS-3G - OPEN2. CHK 1G - OPEN3. CHK 2G - OPEN6. CLOSE 3GD-12G1G3G3GD1SHORT-LINE

ES 1GD CLOSING OP MANDATORY CONDITIONSXBB-IIBB-I1.CHK DS-3G - OPEN2. CHK 1G - OPEN3.CHK 2G - OPEN6. CLOSE 1GD2G1G3G1GDSHORT-LINE