erection operation & maintenance manual for 415v, 3000a nspbd

C&S Electric Ltd

B-1, Site-IV, Surajpur Industrial Area, Kasna Road, Greater Noida.

Dist :- G.B. Nagar (U.P.)

Ph. No. :- 91-0120-3914500-01 Fax No. 91-0120-2341896

Website : www.cselectric.co.in

APPDCHKDREVISIONSDATE BY

FOR 415V, 3000A

NON-SEGREGETED PHASE BUSDUCT

TITLE OF THE DOCUMENT

Project : 1x125 MW Concentrated Solar Thermal Power Project Jaisalmer, Rajasthan Doc. No.: 5427PN050-DHU-E-MRS-LVS-XXX-XXX Rev 00 C&S Doc.No.: C-1410-0712-16507 Doc Title: - Erection, Operation & Maintainanace Manual for 415V, 3000A Non-Segregated Phase Busduct.

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CONTENTS

PART NO DESCRIPTION PAGE NO.

I SALIENT FEATURES OF BUSDUCTS 3-4

II FACTORY ASSEMBLY AND ROUTINE TESTS 5

III MATERIAL RECEIPT 5

IV STORAGE 6

V PRE-ERECTION 6

VI ERECTION 7-12

VII PRE-COMMISIONING 13

VIII POST COMMISIONING 14-15

IX OPERATION & MAINTENANCE 16

XI FIELD TESTS 17

XII DOS AND DONTs 17

XII MAINTENANCE SCHEDULE 18

XIV APPROVED DRG. MDL 19


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Part-I-SALIENT FEATURES OF BUSDUCTS The Busducts serve as interconnections between Transformer and LT Panel (Switchgear). These are of Non-

segregated Phase type. The Busducts are natural air cooled for Outdoor and Indoor purpose.

ENCLOSURE:- The Enclosures are rectangular in cross section and are fabricated out of Al Alloy Sheets. Adjacent sections of

the Busducts are connected by means of Bolts and nuts with gasket in between to render the Busduct dust and

vermin proof.

BUSBAR:- Al Alloy flats (PVC Sleeved) are used as busbars with Painted Matt black colour except contact surface.

Busbars are designed to meet the thermal and dynamic rating of Busduct. The final temperature of the Busbars

is limited to 950C the specified requirements.

BUSBAR SUPPORTS:- Bus supports are FRP plate having adequate electrical and mechanical characteristics. The Busbars are

supported on the FRP plate in such a way as to allow free movement of busbars due to thermal variations. FRP

supports are suitably spanned to with stand mechanical forces that are likely to act during short circuit.

BUSBAR RIGID JOINT:- Bolted overlap type Busbar rigid joints are envisaged for connecting successive Busbars of the same phase. HTS

bolts, nuts and spring steel washers are used to achieve an efficient joint.

INSPECTION OPENING:- Bolted type inspection openings of sufficient size are provided on the enclosures to facilitate maintenance of

busbar supports and busbar joints.

RUBBER BELLOW:- EPDM rubber bellows are provided at transformer end terminations. These will provide flexibility in erection

and also take care of settlement of Transformer / Switchgear connections.


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WALL FRAME ASSY:- Wall frame assembly with FRP sealing pale provided at the location crossing the busduct Transformer yard / room to switchgear room for prevent of any fire in equipment to other equipment, Sealing plate also stop the air from outdoor to indoor. Silica gel breathers are provided at both side of sealing plate for any absorbing any moisture. TERMINATIONS

TRANSFORMER & PANEL END TERMINATION:- Busducts are terminated on to the Transformer / Switchgear by means of copper laminated Flexibles HTS bolts,

nuts and washers are used to achieve an efficient joint.

SPACE HEATERS:- Space heaters are provided at regular intervals in the run of the Busduct enclosure for complete run of

Busducts. These can be removed or replaced without disturbing the bus arrangement. All the space heaters are

wired to a common marshalling box provided at suitable locations at Panel side adaptor Box.

MARSHALLING BOX:- Space heater wiring is envisaged by 2.5 mm2 copper wires running through PVC conduits. The Marshalling box

is made of Al alloy and space heaters are wired to it.

GROUNDING:- Al earth bus size-1 Nos 50x10 thk. flats are provided along the entire run of the Busduct at single side of

enclosure bottom edge line. Provision is made for connecting the ground bus at the equipment ends. All ground

bus joints are made with MS electro galvanised bolts and nuts.

PAINTING:- The exterior of the enclosure is painted Epoxy based (Indoor with RAL 7032 & Outdoor with 631 of IS : 5), for

enclosure interior and busbar painted with Matt black paint.

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Part-III-FACTORY ASSEMBLY & ROUTINE TESTS

Before assembly of various Busduct sections detailed study of Layout / Erection & Key diagram and other

contract drawings should be made to ensure no part of Busduct is missed. The Busducts after assembly must be

checked for fouling and clearances. Power frequency high voltage test must be conducted on entire assembly as

routine tests.

After completion of the tests Busducts have to be dismantled and each Busduct sections should be separately

kept in a casing with a packing list. All assemblies must have erection marks clearly marked up.

Part-IV-MATERIAL RECEIPT (UNLOADING, INSPECTION & HANDLING) 1, Proper crane/sufficient manpower shall be employed for unloading the packing from the trucks/wagons.

Under no circumstances should the packing be rolled/ pushed down the wagons/trucks.

2, Make a thorough inspection of the complete consignment for verification of quantity and external damages.

If any damage is found or suspected, report at once with particulars.

3, During unloading and handling operation if loose parts are found in the bottom of equipment, preserve them

for re-assembly or replace them in the respective locations.

4, While uncrating the packages, sufficient care shall be taken to avoid damages due to sharp crowbars or

opening levers.

5, Contents of the case/crate shall be verified with the packing slip kept inside the package.

6, The structures shall be clean, free from sharp edges, bends etc. The external damages to galvanizing due to

rough handling or unusual weather conditions or any other cause shall be verified.

7, All packages shall be handled gently as the busducts may be sent partly assembled with insulators.

8, Entire quantity of enclosures, elements, loose items etc. shall be received as per the packing list.

9, The enclosures shall not have any external damages or deformation. If the flange edges are damaged,

gaskets and the retaining arrangement will not effectively seal the enclosures.

10, The enclosure surface shall be free from dents, scratches on the painted surface and at welded joints.

11, The Busbars support shall be verified for any cracks, etc.

12, All the inspection covers shall be tightly closed with proper gaskets inside.

13, The enclosures are to be checked for presence of any foreign material inside.

14, Water or any deposits inside the enclosure shall be thoroughly cleaned.

15, The items which are made of Aluminum or soft materials shall be handled very carefully to avoid any

damage at site.

16, Ensure that the assemblies/components are put back in the original packing as in received condition before

sending them for storage.

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Part-V-STORAGE

1, All assemblies/components shall be properly packed in the original packing with suitable polythene

covers.

2, All packages must be kept in well protected areas.

3, All small fragile items must be stored in proper containers at safe locations to avoid any damage.

4, Identification marks or tags shall be kept for easy identification.

5, All the items shall be stored in a systematic way for easy removal and to avoid any damage.

6, The heavy packages shall be stored one above the other.

7, Suitable slings shall be used to avoid impact on the packages while handling.

8, The structure shall not be laid directly on the ground and should be stacked on wooden battens to avoid

direct contact with soil or water.

9, The Hardware such as Bolts, Nuts & Washers shall be stored in indoor and kept size wise in racks

preferably with a coating of oil in separate compartment for easy identification.

10, Enclosure, Busbars & FRP shall be protected carefully.

11, Inspection covers shall be tightly closed to avoid entry of dust and water.

12, Rubber bellows shall be stored in such a way to avoid direct contact with heat and sharp materials, which

will damage the same.

13, Flexibles shall be well protected from any damage.

Part-VI-PRE ERECTION 1, All documents especially bill of material, layout drawings for busducts and structures shall be kept

readily available.

2. All the tools and tackles shall be made available. All civil details and equipment locations are checked

thoroughly to ensure perfect matching of busduct sections as per field quality assurance manual.

3. The rubber bellows shall be in good condition, and made ready for assembly/erection.

4. The FRP and the busbars shall be thoroughly cleaned with dry air before and after the assembly.

5. The ends of busbars shall be smooth and free from dust, dents and paint etc.

6. The inside of enclosure shall be cleaned and free of foreign materials.

7. All surfaces that are to be bolted of busbars and earth bus etc. shall be thoroughly cleaned and free of

foreign materials.

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Part-VII- ERECTION

GENERAL Before the erection of busducts at site the Layout / Erection and Key / Assembly Drawings shall be studied in

detail and an easy and better procedure shall be developed. If the materials have been stored properly with

correct inventory, the installation work can proceed without the delay in searching for missing parts.

It is always preferable to begin the work at one end proceed to the other end. At this juncture, check up whether

necessary arrangements are provided at Switchgear / Transformer terminals for terminating Busducts use proper

tools like tirfor, pulley block etc. for lifting the enclosures. Proper selection of pulleys (2 or 3 sheaves) with

good quality manila ropes will improve the mechanical advantage and minimize the strain to erection crew

particularly when busducts are to be installed at high elevations.

Stringing the busducts for lifting and moving shall be done by skilled erectors and it shall be supervised that the

strings are provided properly so that the enclosures are lifted in a balanced manner without giving chance for

slip off. Check for the correctness of erection number on the enclosure before lifting and erecting the same in

the proper location. All enclosures must be in position and alignment should be checked before proceeding with

the bolting of busbars.

After the bus and support housings are in position, the FRP shall be wiped clean and all dust and foreign matter

removed from inside the enclosures. During the assembly, all the open portions of the bus enclosures shall be

protected from the accumulation of dust or dirt. Provision shall be made to prevent the entry of dust into the

portion of the enclosures, which have been erected.

SUPPORT STRUCTURES 1. Check up whether all foundation for steel columns have been cast and fixing plates have been embedded.

2. A thorough study of Layout / Erection & Key diagram is essential before taking up the steel erection. It

shall be ensured that all elevations are as per the drawing and any deviation shall be brought to the notice

of the customer. Under no circumstance the column erection should commence until the elevations match

with the approved drawings.

3. After ascertaining the correct location of embedded plates, weld the studs and fill up the gap between the

plate and floor with lean concrete or plaster such that the surface is in flush with the finished floor with

only studs projecting out.

4. Install supporting members in their respective places.

5. Verify with the drawings frequently to ensure correct installation of structures.

6. Keep the transverse member in position and tighten them after ascertaining the correct location.

7. Avoid using twisted member. This will cause great difficulty while aligning the enclosures.


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8. Ensure all members of structures are properly grounded.

ENCLOSURE Each standard enclosure is provided with two supports, one at either end. The site assembly work should start

from a fixed position. This may be from either the transformer or switchgear terminals. If there is a wall / floor

crossing, the erection work may also be commenced from this place, after checking thoroughly the correctness

of the position of the wall / floor opening.

BOLTING OF ENCLOSURE:- The complete busduct is aligned and correct positioning at reference points such as transformer terminals, wall /

floor crossing, Switchgear terminals etc. is ensured. Connections between successive enclosures are done by

bolting with a EPDM gasket in between enclosure flanges. All inspection openings on the enclosures shall be

closed the moment the corresponding busbar joints are completed.

BUSBARS Before proceeding with the busbar assembly, the FRP shall be thoroughly checked for any mechanical damage

during transit. Further it is desirable to megger the individual busduct sections before joining them together. If

poor results are obtained, the FRP are to be checked. Meggering the FRP sheets at the initial stage will avoid

replacement of FRP after the final assembly of busducts, which is laborious and time consuming.

For bolted joints in busducts, the following joining procedure should be adopted.

JOINING PROCEDURE

FOR BOLTED JOINTS:- 1. Apply a thin film of suitable grease on the joint surfaces busbar and splice plate. Rub with steel wool on

the greased joint surface. Wipe away with a clean cloth.

2. The surface will have a silvery gleam which will contrast with the surface to the aluminum not cleaned

then apply `Multipurpose grease at once, on the joint surface (any delay should be avoided to prevent re-

oxidization).The coating should be approx. 1mm thick and should cover the entire contact area.

3. Tighten the bolts after keeping the contact surfaces correctly in position. While tightening, ensure a

generous squeeze of the grease from the joint. If sufficient grease does not appear, disconnect and apply

additional grease and then tighten.

4. Bolts & nuts which are supplied with spring washers shall be tightened initially with spanners and finally checked with torque wrench for the recommended values, which are furnished below:

5. Bolt tightness Torque values:


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SPECIFIED INSTRUCTIONS : 1. Proper tools shall be used for transportation of materials.

2. The required assemblies or components alone shall be taken to erection site at each stage of erection.

3. The fragile item shall be handled carefully.

4. The structures shall be properly tightened after alignment.

5. The lifting slings shall be put properly to avoid any distortion and ensure temporary supports if necessary

are ready before lifting the busducts.

6. The floor frame assembly shall be assembled with gaskets properly before lifting to its position.

7. Enclosure sections and rubber bellows shall be properly placed & busbars shall be checked.

8. Before making the joints the cleanliness of jointing ends of busbars shall be checked.

9. Proper application of contact grease is necessary for busbar ends before jointing.

10. The bolts shall not be hammered but tightened fully to the required torque without over tightening.

11. The clearances between phase and enclosures shall confirm to the design values throughout the busducts.

12. Insulators and seal off bushings shall be checked for any damage.

13. No foreign materials or tools shall be left inside the enclosure.

14. All inspection covers shall be properly tightened with gaskets inside and the rubber bellows shall be

connected properly.

15. The earthing of busducts and structures shall be done properly.

16. If Transformer or switchgear connections are to be done later ensure that the enclosure ends are covered

properly.

17. Painting touch up if required shall be done for entire run of busducts.

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PART-VII-PRE COMMISIONING 1. All pre-commissioning tests shall be conducted for busducts as per the field quality assurance. 2. Power frequency withstand tests shall be made in the field at 80% of the values given below:

Nominal Voltage inV(RMS) Power Frequency withstand(1 minute dry) in KV(RMS)

415 2.5

3. All joints have to be made properly tightened with correct bolt and nuts. Ensure that no joints have been

left without bolts.

4. All bolts and nuts have to be properly tightened.

5. There shall not be any bending/buckling of structure members.

6. All the structures shall be properly earthed to the station ground bus.

7. The temporary supports of busbars inside the enclosures if any shall be removed.

8. The Porcelain and FRP shall be verified for breakage etc.

9. The interior of the enclosures, busbars, FRP/sealing shall be cleaned and free from dirt, oil, grease or any

deposits and moisture.

10. Ensure that no flexible laminations have come out protruding and sharp corner is left anywhere.

11. Ensure all bolts and nuts at every flange joints and inspection covers are properly tightened.

12. The gaskets shall be provided at every flange joints and the inspection covers.

13. Proper earthing of busducts and support structures with station earthing system shall be done.

14. The wiring and terminal clamps in the marshalling boxes and space heater/ thermostat shall be checked for

correctness.

15. The space heaters and thermostat shall be in good working condition.

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PART-VIII- POST COMMISIONING All precautions normally observed for High Tension Apparatus should be taken when inspecting Non

Segregated Phase Busduct and associated equipments. Housing should never be opened unless the entire unit is

shut down and the personnel working on the equipment assure themselves that the busduct is not live.

The only reason for opening the bus housing is to clean the FRP to check the space heaters and to ensure if any

loose contact is there in wiring. The first time the unit is shut down, a set of inspection covers in Indoor area

may be removed to determine the amount of dust collected. If this is appreciable, further inspection should be

made and insulators cleaned. If the insulators are clean the interval of inspection can be lengthened. Normally,

the inspection would have to be made more often than yearly intervals. However, the frequency of inspection

should be based on local conditions. Much longer intervals could safely be expected unless local atmosphere has

a very large amount of suspended dust. Space heater can be removed and replaced by suitably opening the

inspection covers.

It is recommended that during the annual maintenance for the equipments like transformer etc. the busducts

also should be checked for dust collection, insulation resistance values, tightness of all bolts and nuts and spring

washers etc. It is desirable to change the busduct gaskets one in 5 years if they are found hard and brittle.

The tightness of busbar joints should be checked during this period with the help of torque wrench. Sufficient

amount of `Multiple-Purpose grease also should be applied at the joining surfaces. The Flexibles used at

Transformer, Switchgear terminals should also be checked for any abnormal temperature rise.

As already stated, the frequency of inspection should be decided based on the amount of dust collection. Besides

this, there is no need to have quarterly/half yearly maintenance checks. But it is preferable to inspect all joints

and FRP at least once in a year.

Since the busbars are enclosed, no failure is expected. Expected failure, which may occur, is at support FRP,

either due to dust collection and condensation or due to minor cracks. In such events, the FRP must be cleaned

and the busbars to be hipoted before commissioning. If FRP do not withstand the hi-pot, then replace them with

new ones. If the busducts are inspected and maintained periodically there can be no chance of any failures.


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SPECIFIC INSTRUCTIONS :- 1. Proper tools and plants shall be used for transporting materials.

2. The required assemblies or components alone shall be taken to erection site at each stage of erection.

3. The fragile item shall be handled carefully.

4. The structures shall properly tightened after alignment.

5. The lifting slings shall be put properly to avoid any distortion and ensure temporary supports if necessary

are ready before lifting the busducts.

6. The floor assembly shall be assembled and gasket properly before lifting to its position.

7. Enclosure sections and rubber bellows shall be properly placed and busbars checked.

8. Before making the joints the cleanness of jointing ends of busbars shall be checked.

9. Proper application of contact grease is necessary for busbar ends before jointing.

10. The bolts shall not be hammered but tightened fully to the required torque without over tightening.

11. The clearances between phase and enclosures shall confirm to the design values throughout the busducts.

12. FRP and sealing shall be checked for any damage.

13. No foreign materials or tools shall be left inside the enclosure.

14. All inspection covers shall be properly tightened with gaskets inside and the rubber bellows shall be

connected properly.

15. The earthing of busducts and structures shall be done properly.

16. If transformer or switchgear connections are to be done later ensure that the enclosure ends are covered

properly.

17. Painting touch up, if required shall be done for entire run of busducts for good physical appearance of the

assembly.

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PART-IX-OPERATION & MAINTENANCE All precautions normally observed for High Tension Apparatus should be taken when inspecting Non

Segregated Phase Busduct and associated equipments. Housings should never be opened unless the entire unit is

shut down and the personnel working on the equipment assure themselves that the busduct is not live.

The only reason for opening the bus housing is to clean the FRP, sealing plate and to check the space heaters

and to ensure if any loose contact in wiring. The first time the unit is shut down, a set of inspection covers in

Indoor area may be removed to determine the amount of dust collected. If this is appreciable, further

inspection should be made and insulators cleaned. If the insulators are clean, the interval of inspection can be

lengthened. Normally the inspection would have to be made often than yearly intervals. However the frequency

of inspection should be based on local conditions. Much longer intervals could safely be expected unless local

atmosphere has a very large amount of suspended dust. Space heater can be removed and replaced by suitably

opening the inspection covers.

It is recommended that during the annual maintenance for the equipments like transformer etc. the busducts also

should be checked for dust collection, FRP resistance values, tightness of all bolts and nuts and spring washers

etc. It is desirable to change the busduct gaskets once in 5 years if they are found hard and brittle.

The tightness of busbar joints should be checked during this period with the help of torque wrench. Sufficient

amount of `Multi-Purpose grease also should be applied at the joining surfaces. The Flexibles used at

Transformer and Switchgear Terminations should also be checked for any abnormal temperature rise. Replace

if necessary, bimetallic strips, ensure that no flexible connecting bolt is loose due to vibration.

As already stated, the frequency of inspection should be decided based on the amount of dust collection.

Besides this, there is no need to have quarterly / half - yearly maintenance checks. But it is preferable to inspect

all joints and the insulators at least once in a year.

Since the busbars are enclosed, no failure is expected often except failure of insulation. This will occur at

support FRP/ sealing, either due to dust collection and condensation or due to minute cracks. In such events, the

bushings must be cleaned and the busbars to be hi -poted before commissioning. If FRP / sealing plate do not

withstand the Hi- pot, then replace them with new ones. If the busducts are inspected and maintained

periodically there can be no chance of any failures.

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Part-XI-FIELD TESTS The following are the suggested field tests to be conducted on the Busduct:-

Open inspection covers and check bus conductor joint bolts with the help of Torque Wrench. Ensure at least

10% of the joint locations are checked. Check up for any possible gaps between surfaces by using feeler gauge.

Dielectric Tests Power Frequency withstand tests can be made in the field at 80% of the values given

Nominal Voltage Power Frequency Withstand

(1 Minute Dry)

415 V 2.5 KV

Precautions for Conducting Power Frequency Tests 1) Disconnect termination of enclosure and Bus conductor at Transformer/Generator.

2) Cordon off the entire Segregated Phase Busduct area.

Part-XII-Dos & Donts D0's

1. Clean the insulators, seal off bushings, drain plugs etc periodically as noted.

2. Check for tightness of busbar joints and grease them suitably.

3. Ensure the functioning of space heaters and thermostats.

4. Ensure the quality of the EPDM rubber gasket and change the same with a new one at periodic inspection

if found necessary.

5. Check effectiveness of joints at rubber bellows to avoid seepage of water.

6. Check effectiveness of earth continuity.

7. Enclosure exterior painting may be done once in five years.

DON'Ts

1. Do not open any of the inspection opening covers when the unit is live.

2. Do not walk over the busduct.

3. Do not disconnect any of the earth connection during maintenance.

4. Do not open rubber bellow with sharp edged tools.

5. Do not use sharp tools while doing maintenance work at equipment termination to avoid any damages.

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MAINTENANCE SCHEDULE

No. ITEM TO BE

INSPECTED

INSPECTION

NOTES

ACTION REQUIRED IF

INSPECTION SHOWS

UNSATISFACTORY

RESULTS

FREQUENCY

1. Busbar Support

(FRP )

Check for dirt Clean Annual

2. Busbars joints and

terminations.

Check for bolt

tightness.

Tighten the bolts for required

level. Apply grease if required.

Annual

3. Insulation resistance. Check for I.R.

value between

busbar and

enclosure &

between busbars.

If the I.R. value is less than 0. 5

Mega Ohm when measured

with a 1000V Mega Ohm

Meter, it is recommended to

take out the FRP and clean the

same and recheck for IR value.

Annual

4. Rubber bellows &

gaskets

Check for

brittleness

If the same is found too brittle

the same needs replacement

Once in 3 years

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AS BUILT/APPROVED DRAWING

SL. NO. DRAWING TITLE DRAWING NO. C&S DRG. NO.

15 Erection Kety Diagram for S/S-2 at swbd. OSS (02-PC-302) for 415V, 3000A Non-Segregated Phase Busduct 5427PN050-DHU-E-MRS-LVS-XXX-XXX C-1410-0712-16506D

13 Erection Kety Diagram for S/S-1 at swbd. USS (01-PC-302) for 415V, 3000A Non-Segregated Phase Busduct 5427PN050-DHU-E-MRS-LVS-XXX-XXX C-1410-0712-16506B

14 Erection Kety Diagram for S/S-2 at swbd. OSS (02-PC-301) for 415V, 3000A Non-Segregated Phase Busduct 5427PN050-DHU-E-MRS-LVS-XXX-XXX C-1410-0712-16506C

12 Erection Kety Diagram for S/S-1 at swbd. USS (01-PC-301) for 415V, 3000A Non-Segregated Phase Busduct 5427PN050-DHU-E-MRS-LVS-XXX-XXX C-1410-0712-16506A

10 Supporting structure arrangement for S/S-2 at SWBD. OSS (02-PC-301) for 415V, 3000A NSPBD 5427PN050-DHU-E-MRS-LVS-XXX-XXX C-1410-0712-16504C

11 Supporting structure arrangement for S/S-2 at SWBD. OSS (02-PC-302) for 415V, 3000A NSPBD 5427PN050-DHU-E-MRS-LVS-XXX-XXX C-1410-0712-16504D

8 Supporting structure arrangement for S/S-1 at SWBD. USS (01-PC-301) for 415V, 3000A NSPBD 5427PN050-DHU-E-MRS-LVS-XXX-XXX C-1410-0712-16504A

9 Supporting structure arrangement for S/S-1 at SWBD. USS (01-PC-302) for 415V, 3000A NSPBD 5427PN050-DHU-E-MRS-LVS-XXX-XXX C-1410-0712-16504B

6 Busduct connection at Transformer end for 415V, 3000A NSPB 5427PN050-DHU-E-MRS-LVS-LAY-008 C-1410-0712-16502

7 Busduct connection at Switchgear end for 415V, 3000A NSPB 5427PN050-DHU-E-MRS-LVS-LAY-007 C-1410-0712-16503

4 Layout of S/S-2 at SWBD. OSS (02-PC-301) for 415V, 3000A Non-Segregated Phase Busduct 5427PN050-DHU-E-MRS-LVS-LAY-006A C-1410-0712-16501A

5 Layout of S/S-2 at SWBD. OSS (02-PC-302) for 415V, 3000A Non-Segregated Phase Busduct 5427PN050-DHU-E-MRS-LVS-LAY-006B C-1410-0712-16501B

2 Layout of S/S-1 at SWBD. USS (01-PC-301) for 415V, 3000A Non-Segregated Phase Busduct 5427PN050-DHU-E-MRS-LVS-LAY-005A C-1410-0712-16500A

3 Layout of S/S-1 at SWBD. USS (01-PC-302) for 415V, 3000A Non-Segregated Phase Busduct 5427PN050-DHU-E-MRS-LVS-LAY-005B C-1410-0712-16500B

1 General Arrangement Drawing for 415V, 3000A Non-Segregated Phase Busduct 5427PN050-DHU-E-MRS-LVS-BDU-001 C-1410-0712-16499

Drawing List for 415V 3000A (Non-Segregated Phase Busduct)

Non-Segregated Phase Busduct

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