Final Documentation Drawings CS0928

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CONTENTS

1.INSTRUCTION MANUAL.

2.DRAWING FOR: -

a) 220KV BUS BAR PROTECTION PANEL.

3.

OPERATING & INSTRUCTION MANUALS: -

a.

NUMERCIAL BUSBAR PROTECTION RELAY, MAKE SEL, TYPE SEL 487B

b.

AUXiliARY. RELAY, MAKE JVS, TYPE: JRV 151.

c.

HIGH SPEED TRIPPING RELAY, MAKE JVS, TYPE JRV 181.

d.

MICROPROCESSOR BASED ANNUNCIATOR, 8WINDOW, MAKE JVS,


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INSTALLATION, OPERATIONS AND MAINTENANCE

INSTRUCTIONS

220KV BUS BAR PROTECTION PANEL.

CUSTOMER: TRANSMISSION CORPORATION OF A.P. LTD.

(APTRANSCO), HYDERABAD.

ORDER REFERENCE

P.O. No : OM-0498/CEC(400KV)/(P&MM)/22/e-EHVT-22/2009/LOT-I/

PANELS/D.No 2010-1, DATED: 15.01.2010

OUR JOB REFERENCE: CS0928


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Page 1.

1. GENERAL SPECIFICATIONS:

The Control & Relay Panel is of cubicle construction, suitable for floor mounting,indoor installation. The protective relays, indicating instruments and control equipment,which are suitable for flush mounting, have been fixed on the front of the panel for easyoperation and control. The hinged rear door will provide access to all the internalcomponents as well as to the terminals of the relays mounted on the front. Thisfacilitates easy inspection and maintenance. The rear door has been provided with

locking arrangements. Necessary hooks to enable easy handling of the panel have beenprovided at the top. Provision is made for terminating the incoming cables at the bottom

of the panel by providing separate line of terminal blocks. These are arranged columnwise inside the panel. Panel is suitable for cable entry from the bottom. Necessarydetachable undrilled gland plate has been provided.

2. PACKING AND INSPECTION:

Care is to be taken to ensure that the equipment reaches the user in perfectworking order. It is suggested to take utmost care while unpacking, shifting and

installing the equipment since it contains delicate instruments, relays, switches etc.Immediately after the unpacking, physically examine all the components and assembliesby observation at the front as well as opening rear hinged door for possible transitdamages, loose contacts, if any. Ensure that all the connections are rigid and proper.

3. ERECTION:

Th l h b id d ith b f h i h l h


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Page 2.

Before energizing the AC & DC auxiliary supplies, ensure proper connection ofthese to the designated terminals. Please refer the terminal drawing provided. Ensureproper polarities are maintained for DC supply, CT circuit for proper functioning.

Ensure proper setting of the Num. Busbar protection relay, for operating value andtime settings. Refer the descriptive literature and the setting instructions for the variousrelays enclosed to this manual.

5. DESCRIPTION:

Refer schematic diagram referred above. A set of Bill of materials furnishingtherein the description of the various components incorporated in the control panelalong with the drawing have been kept inside the panel for reference. Please make use

of the same for commissioning.

The control & relay panel accepts CT, PT, auxiliary 240V single-phase AC supplyand DC station battery connections at respective designated terminal points. DC supplyis used for control supply, auxiliary supply of the relays, closing & tripping circuits of

the breaker etc. 240VAC single-phase supply is used for internal illumination lamps ofthe panel, space heater and 5/15 amps socket. The PT Supply is used for measuringthe Voltage and connected to the voltmeter.

Protective Fuses have been provided inside the panel for the various circuits, detailsof which have been furnished in the drawing. Kindly ensure proper rating and type ofthe Fuses that are used for the various circuits. Breaker control switch is provided on

th l f t lli th b k ll


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Page:38. MAINTENANCE:

Normally the panel does not call for frequent maintenance. However, it isnecessary to ensure that the equipment is kept clean at all times. It is also necessary toensure proper air-cooling. Check the connections at regular intervals and tighten in caseof any loose connections. Do not allow dust and dirt to get deposited on any component.It is advisable to clean the internal components by blowing dry air from a distance orvacuum cleaner at regular intervals.

9. SERVICING:

Field servicing and calibration of instruments, relays to be avoided. This can bedone only at a laboratory where necessary test and calibration facilities are available. Incase of any problem, this can be handled by persons who are completely aware of the

relays incorporated.

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Documents

Final Documentation Drawings CS0928