huong dan lap dat dcl 220kv

8/22/2019 Huong Dan Lap Dat DCL 220kV

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Type GW4-252 double-column horizontal rotary disconnector manual book 1st edition

GW4-252 Type GW4-252 outdoor A.C.Disconnector switch

LOCALE MANUAL BOOK

XIAN XD HIGH VOLTAGE APPARATUS CO.,LTD.

2006 4

CONTENT

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1. 1SCOPE

1.1 1GENERAL

1.2

1ADOPT STANDARD2. 1STRUCTURE and OPERATING PRINCIPLE2.1 1

STRUCTURE GENERAL2.2 2

BASIC OPERATION PRINCIPLE

3.

2MOUNTING and ADJUSTING3.1 2

MOUNTING STEPS3.2 2

MOUNTING ADJUSTING4. 12

MECHANICAL INTERLOCK

5.

13CHECK AFTER MOUNTING ADJUSTING6. 13

FINAL CHECK7. 14

SERVICE AND MAINTAIN

1. Scope.1.1 General

Type GW4-252 double column horizontal rotator outdoor A.C. disconnector isA.C. 50Hz three phases outdoor high voltage equipment and used in 220kVelectrical system, which provide shifting at no-load and safety electricdisconnecting on busbar or circuit breaker when checking.

1.2 Adopt standardGB1985- A.C. high voltage disconnector and earthing switch

2.structure and operating principle.

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2.1 structures general2.1.1 Type GW4-252 disconnector includes 7 parts as in fig 1

6

54

3

2

7

1

3020

2000

A

2650

2970

(1250A)

1600

2500

1.conductive blade 2.earthing static contact 3.support insulator4.earhting switch 5.base 6.type CJ6A motor mechanism 7.type CS20-(X)manualmechanism

Fig 1 installation of type GW4-252 A.C. outdoor disconnector2.1.2 Disconnector is single-pole type. It is can achieve disconnector and earthing

switch group-operation by link rod.

7-12

4000 4000

1340

1370 2500 A

1250 1250 A

1600

20001500 1250 A

2000 A 2500

1600

32wel dingsteel tube

the center of mainshaft of DS operati ngmechani sm

the center of mai nshaf t of ES operati ngmechanism

Fig 2 coordinating installation of type GW4-252 A.C. outdoor disconnector

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2.2 basic operation principle.Motor mechanism is drive by asynchronous motor, which deliver moment to the

main shaft of mechanism by mechanical speed reductor and make it rotate180.The main shaft of mechanism is connected with disconnector by vertical link.Disconnector operation , that is, drive rod is rotated 180driving by operationmechanism, through horizontal rod to drive the other insulator(which installed on

rotator rod) rotate 90, and making the other insulator rotate 90reversely bycross link rod. And at last it is make two switches open or close. When operationmechanisms of earthing switch open or close, it is make rotator shaft to open andclose by drive shaft and horizontal link rod. Fan plate on rotary shaft of earhtingshaft and arc plate on support insulator make interlock, so it is can make sure thesequence of DS open---ES close---ES open---DS close. The drive rod can beadjusted easily.3. Intsallation and adjustment. NoteThe product only can be installed levelly. Please check all parts beforeinstallation to make sure all parts are OK.3.1 Installation steps:

Check before installation insulator installation conductive parts installationearthing switch installation mechanism installation connect mechanism andswitch level rod for three phases installation3.2 installation adjusting3.2.1 check before installation

dismantling into 4 parts when shipping: main conductive parts, supportinsulator, base and mechanism. Please check according to packing list.

check nameplate. check insulator appearance. check shaft and rotator parts.

check fasten parts. check mechanism flexibility and to make sure open and close positioncorrect.

check outgoing plate. check users foundation and all kinds dimension.

3.2.2 Base installation.Please following fig 3, to lift base A,B, and C to foundations respectively. The

disconnector operating mechanism and earthing switch operating mechanism isinstalled on phase B.

(1) lifing base B, seeing fig 3.

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Fig 3 lifting base B(2) Put base B on installation support at site, and adjust it to level. Fasten bolts.( seeing fig 4)

22- 26

460

380

2650i nstal l ati on hol e

l ef t operati ng shaf t ofES i nstal l i n B pol e

ri ght operati ng shaf t ofES i nstal l i n B pol e

operati ng shaf t ofDS i nstal l i n B pol e

Fig 4 fasten base B(3) Repeat order(1)and (2) by distance between phases required by user, andfasten base A and base B on supporter ( base B with interlock) . The installed oneseeing fig 5.

L

LL

C

B

A

center of mai nshaft of ESoperati ng mechani sm

center of mai nshaf t of ESoperati ng mechani sm

32 wel ding steeltube B2F

Fig 5 type GW4-252 disconnector bases installationPlease make sure bases are fasten and the gang-operating shafts for three

phases earthing switch are on one level. Note: L is distance between phases, and usually is not less than 4000mm,which demanded by user.

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3.2.3 insulator installation(1) Loose the bolts on base shaft(2) Lifting support insulator. Take example for phase B seeing fig 6a. ( note: onepiece of insulator can be installed one time )(3) After the lower insulator finishing, the 4 installation holes for the upperinsulator should be correct.

(4) Fasten support insulator, seeing fig 6b.

1

1. upper f l ange 2. base3. the pl ace of i nstal l at i on downsi de f l ange

adj usti ng washer

M1665

M1665

1

32 3

1

mm

Fi g6a l i f t i ng i nsul ator Fi g6b fasten i nsul ator Fi g6c i nstal l i nsul ator

(5) Repeat number (1)-(4) to install insulators for phase A and B. (seeing fig 6d)If support insulator is not vertical, adjust bolts and add washer (is not more than3mm). (Seeing fig 6e)

LL

pol eA pol eB pol eC

Fi g6d the draw of i nstal l at i on i nsul ator

Note l ocal e case decide L

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mm

1mm

mm1

1

1

1

1

pol eA pol eB pol eC

Fi g6e 1.washer 8KA. 950. 365

Note: To make sure installed insulator is vertical and fasten.3.2.4 Conductive blade installation3.2.4.1 Install conductive blade on the top of support insulator.

(1) Conductive blade includes two parts, that are contact finger and contactrod.These two partsare made of wire clamp and outgoing plat and contact.(seeing fig 7a)

41

2 3

1

4

1.outgoing plate 2.contact 3.contact 4. wire clampFig 7a conductive blade

(2) Fasten two blades on the top of support insulator. (seeing fig 7b)

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Fig 7b conductive parts3.2.4.2 Check connection between conductive blade and static contact.(1) Please make sure contact finger contact fully.(2) The intermediate contacts are equal and the error is not more than 5mm.when close fully, adjust position between two contacts to 712mm (seeing fig 7c)(3) When the main blade moved 90at final position, to adjust gap to bestposition.

7 12mm

Fig 7c intermediate contact Note:If left and right outgoing of conductive blade are not on one line after

connecting, or can not close fully, adjusting bolts on support is need.

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Fi g 8

seei ngri ght draw

adj usti ng bol ts

3.2.5 earthing switch installation and adjustment3.2.5.1 earthing installation seeing fig 9, and following such items:

(1) Put conductive blade into fasten clamp on base. Before earthing switchinstalling, wipe the surface and smearing conductive grease on them, then install.

(2) Before inserting,remove the twisting spring(appearance is like glasses) onthe board of plate,and make the gap of conductive rod is right on plate.Andreinstall the twisting spring ,and make it against the conductive rod,and lift the

conductive rod to the level of counterweight in close position.(3) Fasten one end of flexible connector with bolts, and fasten the other end offlexible in 2-13 hole on the plate of base.

cl amp bl ock

f l exi bl e l i nk

twi sti ng spri ng

conduct i ve bl ade

Fig 9 earhting switch installation3.2.5.2 Adjusting earthing switch as followings, seeing fig 10:

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(1) Loose the bolts on the top of moving contact (seeing fig 10), adjust the depthand position of moving contact, to make sure moving contact touch the limit blockof static contact firstly when switch close, than put it in static contact and thedepth is not less than 30mm.(2) If the centers of moving contact and static contact are not in same positionwhen earthing switch closed, the static contact or rotary shaft can be adjusted.

(3) If earthing switch close and open normally, the limit bolt on the top of rod shallbe against conductive rod.

1

2

3

54

6

78910

16 17

111215 14 13

1.contact piece 2.bent plate 3.housing 4.bolt 5.washer 6.block 7.stainless steelsplit pin 8.stainless steel washer 9. stainless steel pin with hole 10.spring11.washer 12.contact 13.conductive pipe 14.lock nut 15.pin 16.contact 17.bolt

Fig 10 earthing static contact and earthing moving contact3.2.6 Operating mechanism installation and connection with body.(1) Appearance and install dimension of operating mechanism (seeing fig 11a,11b)

1 Appearance and dimension type CJ6A operating mechanism.

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20

615

220

45020

80

265

530

5

4-M16200

20

A

675

20310

6970 26

69 26 18

405

403

132

213

132

A

manual operati nghol e 18

103 140

vi ew A6- 13

equati onal l ay

Fig 11a Appearance and dimension type CJ6A operating mechanism.Note: 4-M16 thread hole is connect hole between mechanism and userfoundation; 6-13 hole is connect hole between mechanism and vertical rod.

2 Type CS20-(X)earthing switch operating mechanism appearance and installdimension. (seeing fig 11b)

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4- 17

35

4A

3

2

1

5

2-M10i nstal l ati onhol e

Fi g11b type CS20-(X)manual operati ng mechani smi nstal l ati on pi cture

vi ewA

Note: 1. Please open number 1 cover first when operating, then insertoperating rod.

2. Magnetic lock is installed at right side.1. cover 2.housing 3.base 4.rotary shaft 5. Magnetic lock

(2) Operating mechanism installation (position dimension seeing fig 12)

88

88

350

550

350

l ef t center of operati ng shaf t of ES

type CS20- (X)manual mechani sm

type CS20-(X)manual mechani sm

ri ght center of operati ng shaf t of ES

the center of operati ng shaf t of DStype CJ 6A motor mechanism

Fig 12 operating mechanism installation

Note: please install CJ6A mechanism and CS20-(X) on foundation. With the

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center of operating shaft on base to make sure the main shaft is coincidewith mechanism rotary shaft.

(3) The connection between operating mechanism and main body. (Seeing fig13and fig 14)

1

2

350 35088

550

88

the operati ngmechani smof DS

the operati ngmechani smof ES

Fig 13 operating mechanism connecting with main body installing drawing1. Vertical link (50) welding steel tube Q235A 2.rubbing plate

L

Fig 14 vertical link50welding steel tube Q235A

Note: 1. main blade (with type CJ6A mechanism) vertical link L=700.2. Earthing blade (with type CS20-(X)) vertical link L=700.

Note: when mechanism and disconnector both opening, vertical link can beconnected. And close and open blade by hand after installed and adjust number 2rubbing plate in fig 13 to make close and open fully.3.2.7 Horizontal link connect.

(1) The group-operating link for disconnector and earthing switch installationseeing 15a.

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L

L=3720(distance among phases 4000)Fig 15a three-group operating link

Note: Type CJ6A operation mechanism by hand and check synchronization fordisconnector three phases. Then adjust disconnector link length (seeing15b), to make sure the period for three phases is not more than 20mm.Operate type CS20-(X) hand mechanism, and check synchronization forearthing switch three phases. Then adjust earthing switch link length (seeing

15b), to make sure the period for three phases is not more than 20mm.

Fi g 15b

ES l i nkage rod

7-12

DS l i nkage rod

Note: Horizontal link dimension is calculated with 4000mm for phases distance.If phases distance changes, the link can be changed too.

4. Mechanical interlockDisconnector and earthing switch interlocked seeing fig 16.

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DS CLOSE ES OPEN DS OPEN ES CLOSE

i nterl ock pl ate i nterl ock pl ate

Fig16 mechanical interlock drawing5. Check after installation and adjustment

(1) Operate disconnector and earthing switch respectively 35 times. If openand close positin is ok, the operation shall be smooth and contact well.

(2) When install motor mechanism ,operate 5 times at motor rated voltage andopen and close for 35 times each at 85 and 110 rated operating voltage.

(3) Contact head and contact piece shall be contact well. Then measure maincircuit resistance (between outlet terminals of two sides) and the numerical valueis not more than as followings:

Rated current A Circuit resistance

note

1250 Is not morethan180

reference

16002000 Is not more than80

reference

2500 Is not more than60

reference

(4) When in final close position, the three-group disconnector shall be connectedwell. And the error of synchronization for three phases is not more than20mm.Measure method: when moving contact of any pole of three contacting static

contact piece both two sides, to measure distance of moving contact andstatic of the other two poles.

(5) check all of drive and rotary parts are ok and reliable or not. And all of shafts,pins, and bolts are ok and reliable or not.(6) Check interlock for disconnector and earthing switch is ok and reliable.6. Final examination.

After installing and before energization, disconnector shall be check carefully asfollowing:

(1) Check post insulator is with crack and defect or not.(2) Check contact and contact finger are in one line or not.

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(3) Check all of bolts, shafts, and pins are fixed and reliable or not.(4) Check earhting switch installation and operating.(5) Check operation of insulated distance and gap and its conductive parts.(6) Check flexibility and operation of disconnector operating mechanism andcontrol situation of diver device.

(7) Check insulator, conductive parts and diver parts are clean or not.

7. Service and maintain. Note: The disconnector can be operated after circuit load breaking. The

equipment shall be checked routinely (about 5 yearly).If serious short-circuit occur, check shall be done after the failure. Periodic maintainshall be implied as following:

7.1 Clearing away the dirty on the surfaces of conductive parts and supportinsulators, cleaning the connecting face between connection terminal and busbaras well as intermediate contact, the contact surface of contact finger, thensmearing conductive grease on them.7.2 Clean away the inner of outlet terminal, and smear conductive grease oncontact surface to make sure connection well and rotation flexibly.7.3 Check whether all tightening parts, such as cylindrical pins, bolts and so on,are loose.7.4.Check each connection holes and drive part; if there is rusting, please smearlubrication.7.5 Check post insulator is with crack and defect or not7.6 Check manual mechanism. When handle goes to angle of 100, checkauxiliary switch operation is ok or not and open and close contact is well or not.7.7 Type CJ6A motor seeing its manual book.7.8 When in open or close position, check mechanism final position and auxiliaryconnection are correct and shift is ok or not.

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huong dan lap dat dcl 220kv

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