PROJECT:

2 X 150 MW COAL BASED TPP, BHADRESHWAR, GUJARAT

DOCUMENT TITLE:

BREAKER LOGIC / PROTECTION CHECK LIST

(UNIT - 2)

Client
Project Consultant

OPGS POWER GUJARAT PVT LTD.

Aquatherm Engineering Consultants (India) Pvt.
Limited
9336

No
Project No.
Document / Drawing No.

4-9336-300-003

PROJECT CONSULTANT:

Aquatherm Engineering Consultants (India) Pvt. Limited,

2

nd

Floor, St. Thomas Building,

# 68 (Old No. 150), Luz Church Road,

Mylapore,
Chennai 600 004, India.
Tel : +91-44-24994032 / 24660462 / 24660464 / 24982201
Fax : +91-44-24996085.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

6.6KV UAS-2A BREAKER

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
6.6KV UAS -2A Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
415V UAS-2A Breaker opened
6.6KV UAS -2A Trip not operated

Close

Close comments from screen

C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

6.6KV UAS-2B BREAKER

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
6.6KV UAS -2B Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
415V UAS-2B Breaker opened
6.6KV UAS -2B Trip not operated

Close

Close comments from screen

C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

415V UAS-2A BREAKER (PMCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
415V UAS-2A Breaker Trip Operated
6.6KV UAS-2A Breaker opened

Open

Open comments from screen

B

CLOSE PERMISSIVES

Bus Coupler opened Condition

415V UAS Bus Coupler opened
6.6KV UAS-2A Breaker closed

Close

415V UAS-2A Breaker not tripped

2

Bus Coupler Closed Condition

415V UAS Bus Coupler closed
6.6KV UAS-2A Breaker closed
415V UAS-2A Breaker not tripped

Close

415V UAS-2B Breaker opened

415V UAS-2B Breaker not tripped
C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

415V UAS-2B BREAKER (PMCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
415V UAS-2B Breaker Trip Operated
6.6KV UAS-2B Breaker opened

Open

Open comments from screen

B

CLOSE PERMISSIVES

Bus Coupler opened Condition

415V UAS Bus Coupler opened
6.6KV UAS-2B Breaker closed

Close

415V UAS-2B Breaker not tripped

2

Bus Coupler Closed Condition

415V UAS Bus Coupler closed
6.6KV UAS-2B Breaker closed
415V UAS-2B Breaker not tripped

Close

415V UAS-2A Breaker opened

415V UAS-2A Breaker not tripped
C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

415V UAS-BC BREAKER (PMCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
415V UAS Bus Coupler Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
Remote:
415V UAS-2A Breaker opened
415V UAS-2A Breaker not tripped
Close
415V UAS-2B Breaker Closed
415V UAS B/C trip not operated
OR
415V UAS-2B Breaker opened
415V UAS-2B Breaker not tripped
Close
415V UAS-2A Breaker Closed
415V UAS B/C trip not operated

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

6.6KV ESP-2A BREAKER

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
6.6KV ESP -2A Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
415V ESP-2A Breaker opened
6.6KV ESP -2A Trip not operated

Close

Close comments from screen

C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

6.6KV ESP-1B BREAKER

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
6.6KV ESP -2B Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
415V ESP-2B Breaker opened
6.6KV ESP -2B Trip not operated

Close

Close comments from screen

C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

415V ESP-2A BREAKER (MCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
415V ESP-2A Breaker Trip Operated
6.6KV ESP-2A Breaker opened

Open

Open comments from screen

B

CLOSE PERMISSIVES

Bus Coupler opened Condition

415V ESP Bus Coupler opened
6.6KV ESP-2A Breaker closed

Close

415V ESP-2A Breaker not tripped

2

Bus Coupler Closed Condition

415V ESP Bus Coupler closed
6.6KV ESP-2A Breaker closed
415V ESP-2A Breaker not tripped

Close

415V ESP-2B Breaker opened

415V ESP-2B Breaker not tripped
C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

415V ESP-2B BREAKER (MCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
415V ESP-2B Breaker Trip Operated
6.6KV ESP-2B Breaker opened

Open

Open comments from screen

B

CLOSE PERMISSIVES

Bus Coupler opened Condition

415V ESP Bus Coupler opened
6.6KV ESP-2B Breaker closed

Close

415V ESP-2B Breaker not tripped

2

Bus Coupler Closed Condition

415V ESP Bus Coupler closed
6.6KV ESP-2B Breaker closed
415V ESP-2B Breaker not tripped

Close

415V ESP-2A Breaker opened

415V ESP-2A Breaker not tripped
C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

415V ESP-BC BREAKER (MCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
415V ESP Bus Coupler Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
Remote:
415V ESP-2A Breaker opened
415V ESP-2A Breaker not tripped
415V ESP-2B Breaker Closed

Close

415V ESP B/C in remote mode

Confirm through telephonic

415V ESP B/C trip not operated

OR
415V ESP-2B Breaker opened
415V ESP-2B Breaker not tripped
415V ESP-2A Breaker Closed

Close

415V ESP B/C in remote mode

Confirm through telephonic

415V ESP B/C trip not operated

C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

BOILER UAS-2A BREAKER (PMCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
Boiler UAS (PMCC) -2A Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
Boiler MCC -2A Breaker opened
Boiler UAS (PMCC) -2A Trip not operated

Close

Close comments from screen

C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

BOILER UAS-2B BREAKER (PMCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
Boiler UAS (PMCC) -2B Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
Boiler MCC -2B Breaker opened
Boiler UAS (PMCC) -2B Trip not operated

Close

Close comments from screen

C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

BOILER MCC-2A BREAKER

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
Boiler MCC -2A Breaker Trip Operated
Boiler UAS (PMCC) - 2A Breaker opened

Open

Open comments from screen

B

CLOSE PERMISSIVES

Bus Coupler opened Condition

Boiler MCC Bus Coupler opened
Boiler UAS (PMCC) -2A Breaker closed

Close

Boiler MCC -2A Breaker not tripped

2

Bus Coupler Closed Condition

Boiler MCC Bus Coupler closed
Boiler UAS (PMCC) -2A Breaker closed
Boiler MCC -2A Breaker not tripped

Close

Boiler MCC -2B Breaker opened

Boiler MCC -2B Breaker not tripped
C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode, confirm

throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

BOILER MCC-2B BREAKER

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
Boiler MCC -2B Breaker Trip Operated
Boiler UAS (PMCC) - 2B Breaker opened

Open

Open comments from screen

B

CLOSE PERMISSIVES

Bus Coupler opened Condition

Boiler MCC Bus Coupler opened
Boiler UAS (PMCC) -2B Breaker closed

Close

Boiler MCC -2B Breaker not tripped

2

Bus Coupler Closed Condition

Boiler MCC Bus Coupler closed
Boiler UAS (PMCC) -2B Breaker closed
Boiler MCC -2B Breaker not tripped

Close

Boiler MCC -2A Breaker opened

Boiler MCC -2A Breaker not tripped
C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

BOILER MCC - BC BREAKER

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
Boiler MCC Bus Coupler Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
Remote:
Boiler MCC -2A Breaker opened
Boiler MCC -2A Breaker not tripped
Boiler MCC-2B Breaker Closed

Close

Boiler MCC B/C in remote mode

Confirm through telephonic

Boiler MCC B/C trip not operated

OR
Boiler MCC -2B Breaker opened
Boiler MCC -2B Breaker not tripped
Boiler MCC-2A Breaker Closed

Close

Boiler MCC B/C in remote mode

Confirm through telephonic

Boiler MCC B/C trip not operated

C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

TG UAS-2A BREAKER (PMCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
TG UAS (PMCC) -2A Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
TG MCC -2A Breaker opened
TG UAS (PMCC) -2A Trip not operated

Close

Close comments from screen

C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

TG UAS-2B BREAKER (PMCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
TG UAS (PMCC) -2B Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
TG MCC -2B Breaker opened
TG UAS (PMCC) -2B Trip not operated

Close

Close comments from screen

C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

TG MCC-2A BREAKER

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
TG MCC -2A Breaker Trip Operated
TG UAS (PMCC) - 2A Breaker opened

Open

Open comments from screen

B

CLOSE PERMISSIVES

Bus Coupler opened Condition

TG MCC Bus Coupler opened
TG UAS (PMCC) -2A Breaker closed

Close

TG MCC -2A Breaker not tripped

2

Bus Coupler Closed Condition

TG MCC Bus Coupler closed
TG UAS (PMCC) -2A Breaker closed
TG MCC -2A Breaker not tripped

Close

TG MCC -2B Breaker opened

TG MCC -2B Breaker not tripped
C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

TG MCC-2B BREAKER

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
TG MCC -2B Breaker Trip Operated
TG UAS (PMCC) - 2B Breaker opened

Open

Open comments from screen

B

CLOSE PERMISSIVES

Bus Coupler opened Condition

TG MCC Bus Coupler opened
TG UAS (PMCC) -2B Breaker closed

Close

TG MCC -2B Breaker not tripped

2

Bus Coupler Closed Condition

TG MCC Bus Coupler closed
TG UAS (PMCC) -2B Breaker closed
TG MCC -2B Breaker not tripped

Close

TG MCC -2A Breaker opened

TG MCC -2A Breaker not tripped
C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

TG MCC - BC BREAKER

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
TG MCC Bus Coupler Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
Remote:
TG MCC -2A Breaker opened
TG MCC -2A Breaker not tripped
TG MCC-2B Breaker Closed

Close

TG MCC B/C in remote mode

Confirm through telephonic

TG MCC B/C trip not operated

OR
TG MCC -2B Breaker opened
TG MCC -2B Breaker not tripped
TG MCC-2A Breaker Closed

Close

TG MCC B/C in remote mode

Confirm through telephonic

TG MCC B/C trip not operated

C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

6.6KV ACC - 2A BREAKER

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
6.6KV ACC -2A Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
415V ACC-2A Breaker opened
6.6KV ACC -2A Trip not operated

Close

Close comments from screen

C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

6.6KV ACC - 2B BREAKER

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
6.6KV ACC -2B Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
415V ACC-2B Breaker opened
6.6KV ACC -2B Trip not operated

Close

Close comments from screen

C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

6.6KV ACC - 2C BREAKER

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
6.6KV ACC -2C Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
415V ACC-2C Breaker opened
6.6KV ACC -2C Trip not operated

Close

Close comments from screen

C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

415V ACC -2A BREAKER (MCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
415V ACC-2A Breaker Trip Operated
6.6KV ACC-2A Breaker opened

Open

Open comments from screen

B

CLOSE PERMISSIVES
Bus Coupler opened Condition
415V ACC Bus Coupler-1 opened
6.6KV ACC-2A Breaker closed

Close

415V ACC-2A Breaker not tripped

Bus Coupler Closed Condition
415V ACC Bus Coupler-1 closed
6.6KV ACC-2A Breaker closed
415V ACC-2A Breaker not tripped
415V ACC-2B Breaker opened

Close

415V ACC-2B Breaker not tripped

415V ACC Bus coupler -2 Breaker opened
415V ACC Bus coupler -2 Breaker not tripped
C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

415V ACC -2C BREAKER (MCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
415V ACC-2C Breaker Trip Operated
6.6KV ACC-2C Breaker opened

Open

Open comments from screen

B

CLOSE PERMISSIVES
Bus Coupler opened Condition
415V ACC Bus Coupler-2 opened
6.6KV ACC-2C Breaker closed

Close

415V ACC-2C Breaker not tripped

Bus Coupler Closed Condition
415V ACC Bus Coupler-2 closed
6.6KV ACC-2C Breaker closed
415V ACC-2C Breaker not tripped
415V ACC-2B Breaker opened

Close

415V ACC-2B Breaker not tripped

415V ACC Bus coupler -1 Breaker opened
415V ACC Bus coupler -1 Breaker not tripped
C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT: BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

DATE

4-9336-300-003

Sr. No

DESCRIPTION

Equipment

415V ACC -2B BREAKER (MCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
415V ACC-2B Breaker Trip Operated
6.6KV ACC-2B Breaker opened

Open

Open comments from screen

B

CLOSE PERMISSIVES
Bus Coupler-1 opened Condition
415V ACC Bus Coupler-1 opened
6.6KV ACC-2B Breaker closed
415V ACC-2B Breaker not tripped

Close

415V ACC Bus Coupler-2 opened (OR) (ACC Bus Coupler-2

closed & ACC-2C breaker opened)
Bus Coupler-1 closed Condition
415V ACC Bus Coupler-1 closed
6.6KV ACC-2B Breaker closed
415V ACC-2B Breaker not tripped

Close

415V ACC Bus Coupler-2 opened

415V ACC-2A Breaker opened
Bus Coupler-2 opened Condition
415V ACC Bus Coupler-2 opened
6.6KV ACC-2B Breaker closed
415V ACC-2B Breaker not tripped

Close

415V ACC Bus Coupler-1 opened (OR) (ACC Bus Coupler-1

closed & ACC-2A breaker opened)
Bus Coupler-2 closed Condition
415V ACC Bus Coupler-2 closed
6.6KV ACC-2B Breaker closed
415V ACC-2B Breaker not tripped

Close

415V ACC Bus Coupler-1 opened

415V ACC-2C Breaker opened
C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

415V ACC-BC 1 BREAKER (MCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
415V ACC Bus Coupler-1 Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
Remote:
415V ACC-2A Breaker opened
415V ACC-2A Breaker not tripped
415V ACC-2B Breaker Closed

Close

415V ACC B/C-1 trip not operated

415V ACC B/C-2 opened
Remote:
415V ACC-2B Breaker opened
415V ACC-2B Breaker not tripped
415V ACC-2A Breaker Closed

Close

415V ACC B/C-1 trip not operated

415V ACC B/C-2 opened
C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

415V ACC-BC 2 BREAKER (MCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
415V ACC Bus Coupler-2 Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
Remote:
415V ACC-2C Breaker opened
415V ACC-2C Breaker not tripped
415V ACC-2B Breaker Closed

Close

415V ACC B/C-2 trip not operated

415V ACC B/C-1 opened
Remote:
415V ACC-2B Breaker opened
415V ACC-2B Breaker not tripped
415V ACC-2C Breaker Closed

Close

415V ACC B/C-2 trip not operated

415V ACC B/C-1 opened
C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT: BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

DATE

4-9336-300-003

Sr. No

DESCRIPTION

Equipment

N/E UAS-2A BREAKER (PMCC)

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

PROTECTIONS
N/E UAS (PMCC) -2A Trip Operated
Open
Open comments from screen

CLOSE PERMISSIVES
N/E MCC -2A Breaker opened
N/E UAS (PMCC) -2A Trip not operated

Close

Close comments from screen

C

CHECKS
Selector Switch kept in local mode and feedback in DCS
Close/Open command from DCS

Local
Close/Open

Close/Open/Trip Indication in DCS

Available

Breaker in test position indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

Always remote mode. If local mode,

confirm throught telephone.

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

6.6KV UAS TIE BREAKER

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

CLOSE PERMISSIVES
POWER INITIAL RESTORE
Remote selected
UAS TIE not in trip condition
Independent selected in AIM switch

Close

UAS bus under voltage persisting

UAT incomer opened
SHUTDOWN PARALLEL
Manual selected in AIM switch
Remote selected
UAS TIE not in trip condition
PT selector switch in TIE

Close

Trip selector switch in incomer

UAS TIE open condition
UAT incomer closed
B

CHECKS
POWER INITIAL RESTORE:
Close command given with Bus energised condition
AIM Switch in independent

No Close
Independent selected

SHUTDOWN PARALLEL
Selector Switch kept in local mode and feedback in DCS
Selector Switch kept in remote mode and feedback in DCS

Local
Remote

Close command from DCS

Close

Open command from DCS

No open

Close/Open/Trip Indication in DCS

Available

Trip relay simulation on breaker Closed status

PT selector switch in TIE / Trip selector switch in incomer
After completion of shutdown parallel UAT incomer automatically open

Trip
Shutdown parallel
selected
Opened

REMARKS
1) Breaker cannot be open from DCS
2) After closing of TIE breaker UAT incomer automatically opened from hardware inter lock

Shall be consider with spare IO's

PROJECT:

2X150MW THERMAL POWER PLANT

CLIENT:

OPG GUJARAT

DOCUMENT:

ELECTRICAL BREAKER LOGIC / PROTECTION CHECK LIST

REV

DOC. NO:

4-9336-300-003

DATE

Sr. No

DESCRIPTION

Equipment

6.6KV UAT INCOMER BREAKER

1
21.04.14

REQUIREMENT

OBSERVATION / REMARKS

CLOSE PERMISSIVES:
STARTUP PARALLEL:
Manual selected in AIM selector switch
Remote selected
UAT incomer trip not operated
PT selector switch in incomer

Close

Trip selector switch in TIE

Synchronise permissive
UAS TIE close condition
B

CHECKS
Selector Switch kept in local mode and feedback in DCS
Selector Switch kept in remote mode and feedback in DCS

Local
Remote

Close command from DCS

Close

Open command from DCS

No open

Close/Open/Trip Indication in DCS

Available

Trip relay simulation on breaker Closed status

Trip

PT selector switch in incomer / Trip selector switch in TIE

Startup parallel
selected

After closing of UAT incomer

Auto required

After completion of startup parallel UAS TIE breaker automatically open

Shall be consider with spare IO's

Opened

REMARKS
1) Breaker cannot be open from DCS.
2) After closing of UAT incomer UAS TIE breaker automatically opened from hardware inter lock.
3) After completion of startup parallel AIM switch should be kept in Auto mode for auto changeover operation.