Erection, OperationAnd

Maintenance Manual

For Igranic POWERVAC HHV12Indoor 12 kV

Horizontal Isolation,Horizontal Withdrawable ,Vacuum Circuit Breakers

INDEXPage No.

INTRODUCTION 4

CONSTRUCTION 5

DES?ATCH, HANDUNG AND STORAGE 7

INSTALLATION 8

VCB OPERATING INSTRUCTIONS 10

OPERATION OF CIRCUIT BREf..KER 12

PADLOCKING 12

INTERLOCKS 13

TESTING 14

ROUTINE MAINTENANCE 14

SETTING INSTRUCTION (Common linkage assembly) 15

RESETTING INSTRUCTION (Mechanism) 16

UST RECOMMENDED SPARES 18

MAINTENANCE SPAitES FOR MECHANISM 19

UNDER-VOLTAGE RELEASE MECHANISM 20

OPERATION OF THE UVR 21

2

DRAWINGS

General arrangement of a Typical Panel

Ufting arrangement of Panel

Foundation detail for Single busbar panel

Inter panel Earth connection

Busbar layout

MechanismMechanism Unkage Open - Dashpot setting

Charging Assembly

Oosing Spring Release Solenoid AssemblyOpening Trip Solenoid Assembly

3

232425

2627

28

29

303132

*

*

*

*

*

INTRODUCTION

This instruction manual describes the physical construction and theprocedures for handling, storage, insta llation, operation and maintenanceof the Igranic POWERVAC Metalclad Vacuum SWitchgear. Description ofthe Vacuum Circuit Breaker (VCB) used in this switchgear is found later inthis manual.

The switchgear will provide satisfactory service over its lifetime providedthese recommendations are observed.

The data provided is for the assistance of qualified Installation / OperatingPersonnel. Should further detail/ information be required, please refer toIgranic service department .

Contract and serial numbers should be quoted if possible in allcorrespondences.

Due to continuous improvement the equipment supplied may differ slightlyin detail from that described in the manual.

* Table 1 below shows the basic specifications for the HHV12 POWERVACSWitchgear.

TYPE HHV12

R Voltage (kVI 12A Frequency (Hz) 50/60TE Busbar current (AI 630 1250 2000

D Short time current 20/25 kA for 3 sec

Width 600 600 800

Cubicle Depth 2000

Dimension Height Typically 2000(mm) Transition panel width 400

Approx. Without potent ial transt, 635 650 750

Weight (kg) Potential transformers 80

4

CONSTRUCTION.

Igranic HHVI2 type switchgear is totally metalclad and fullycompartmentalized in accordance with IEC298jBSS227. It consists mainly of aVacuum Orcuit Breaker (VeB), protection relays, metering compartments anda set of 3 phase insulated busbars. The switchgear Is completely constructed,wired and tested in the factory.

The HHV12 panel is fabricated from sheet steel which is chemically treatedbefore painting, to provide adequate protection against environmentalconditions.

Each panel consists of individual compartments comprising -

a) Lower - VCB compartment.

b) Middle - Instrumentation and Metering compartment.

c) Top - Potential Transformer compartment (if required)

d) Segregated Rear - Busbar and cabling compartment.

For a particular contract the specific overall dimension drawing should bereferred to.

Typical G.A. drawings are shown in Fig 1.

The multicore cable box and power cable entry points are provided withremovable gland plates, and are located at the rear and base of the panelrespectively. cable entry is normally from the bottom, however top cable entrycan be provided as and when required.

The VCB is of the horizontal isolation and withdrawal type. The caniage canbe easily withdrawn or plugged in using the racking handle provided. Forsafety the VCB is interlocked against dangerous operations in either the"connected" or "disconnected" positions. When the VCB is withdrawn from theconnected position, independently operated safety shutters automaticallycover the busbar and circuit fixed contact bushings. These safety shutters canbe padlocked in the closed position, or can be latched open for testing. Thelatch provided will automatically reset the shutters when the VCB is rackedinto the service position.

The VCB control cables are connected to a socket mounted on the front of theVCB, and a removable plug is used to connect the VCB control cables to thefixed panel wiring.

5

A fault making drcuit earthing switch is provided and can be operated fromthe front of the panel. The operating mechanism is accessible when the VCB isopen, and the truck withdrawn.

The earthing switch is interlocked with the VCB such that it cannot beoperated with the VCB in the service position. Padlocking facility is provided toprevent unauthorlzed operation.

6

DESPATCH AND HANDLING

Switchgear consisting of several HHV12 panels are despatched in individuaiunits. All interconnecting busbars, earth bars and insulation boots are suppliedas loose items. During transit the ves in the panel is secured in the engagedposition to avoid movement in the compartment which can damage theisolating contacts. A securing plate is bolted to the floor plate as well aspacking material between the sides of the VCB truck and side frames toprevent any movement of the VeBduring transit.

For transport and shipment, lifting eyes are provided to facilitate lifti ng. Theyare bolted to t he top corners of the panel and must be removed when thepanels are put into position for connection.

(a maximum of two panels coupled together can be lifted as a unit).

Generally each switchboard is supplied complete with the followi ng looseitems.

a) - Foundation channels (Optional).

b) - Foundation Bolts.

c) - VCB Spring Charging Handle.

d) - Earth Switch Operating Handle

e) - Set of interconnecting Busbars and insulation Boots.

f) - VCB racking handle.

On arrival at site the consignment should be checked against thecorresponding delivery notes. The drcuit breaker primary, secondary isolatingcontacts and the resin-cast components shall be examined for visiblecracks/damages. Similarly the VCB truck, the fixed panel housing shutters, CTbushing etc. shall be examined carefully. Loose items such as busbars,shrouds! etc. shall be examined for any transit damages such as bending,deforming, cracks, pilferage, etc.

Any damage or shortages to the items should be reported, giving fulldescription of the missing parts and/or damaged items.

STORAGE

The switchboard is of the indoor type (IP3X) and should be stored in a clean,dry and vent ilated place. The SWitchgear should never be exposed to moistureor rain. For prolonged storage, it is recommended that the panel heaters are

7

switched on to prevent moisture condensation and subsequent corrosivedamage leading to maloperation .

INSTALLATION.

The Switchboard is carefully manufactured to the specified standards and fu llytested before delivery. It should operate satisfactori ly if the followinginstallation procedures are followed.

1) - The floor on which the switchboard is to be installed must be flat andlevel (within +/- 2mm/1000mm).

2) - Install the foundation channels (optional) such that they are mountedflush with the floor.

3) - Remove and discard the bracket locking the VCB and packing materia l.Withdraw the VCB from the panel using the VCB racking handle.

4) - Position the switchboard and bolt it securely to the foundations.

5) - Install the main busbars and earth bars. Ensure that the joint surfacesare clean; smear the joints lightly with the silicon grease supplied, and tightenthe bolts. ('take care that the grease does not get onto the bolt or nutthreads otherwise overtightening of the joint can result) .

Bolt size: MB - torque 15Nm.

M10 - torque 25Nm.

M12 - torque 40Nm.

6) - Install the insulation boots. For connections where insulation boots arenot used, H.V. tape insulation and compound should be applied.

7) - Re-insert VCB into the cubicle. (Note that the control cable plug must beconnected before VCB is racked into service position.

B) - Connect the inter-panel control wiring and complete the power andcontrol circuit Wiring.

g) - Replace all the covers before testing and commissioning the SWitchboard.

10) - The front door of the panel has a padlockable handle arrangement.There are eight socket head screws provided on the door to withstandpressure due to internal arc. The handle is operated clockwise for front dooropening and anti clockwise for locking.

8

Ensure no foreign materials are inside the truck runner area to have smoothmovement of circuit breaker truck inside the panel.

The working clearance to the front of the switchgear panel shall be no lessthan 1 metre to enable ea"'! and comfortable withdrawal of the VeB trucl< tofacilitate inspection and testing. Oearance at the rear for installing the cablesshould be 600mm minimum. The overhead clearance shall be such as topermit maintenance and for access to the mounted equipment on the fixedhousing. Access around the switchboard should be in accordance with theHealth and safety recommendations.

9

veo OPERATING INSTRUCTIONS

Insertion of Circuit Breaker into Panel

Open the front door of the panel. Ensure that earth switch (when provided) isin open position. Check manually that all the shutters operate freely. Positionthe drcuit breaker (CB) truck in front of panel.

Ensure secondary plug and socket is locked ilLPOsition with top and bottomlockin.9..Qjps of the secondary socket board. before attempting to rack the CBtruck into the panel.

WARNING damage to the interlock can result if an attempt is madeto oP!'rate the breaker with the LV llli!!uJot fll~ located.

For locating the breaker truck in the isolated, and service positions a leadscrew arrangement is fitted in the lower part of the CB truck. This is used forracking in and out by use of the handle provided.

Engagement of circuit breaker truck in the panel

The CB truck is located inside theendosure by fi rst aligning thewheels in front of the guide rails inthe floor of the enclosure, and thenwith minimum effort move the ::6truck forward to engage the leadscrew. Once engaged onto the leadscrewI the CB truck is movedforward by rotating the handleclockwise (anti-clockwise forremoval). There are two positionswithin the enclosure for the CBtruck, ' CB ISOLATED I TEST'" and "CB SERVICE".

In the "CB SERVICE" position the CB truck isolating stabs are fully engaged inthe fixed contacts. The white label at the rear of the CB Seryjce labell needs tocoincide with the white label attached to the lower part oUhe VCB truck frontshe<:t·

In the "CB lSOLATED/TESJ: position the high voltage o rcutts aredisconnected, and the circuit breaker can be operated without engaging thepower drcuit.

Interlocks are provided to ensure that the CB truck can only be inserted andwithdrawn when the circuit breaker is in the OFF condition.

castell or similar key operated locks are provided for this purpose.

10

The breaker has to be in the 'OFF' position and the "shot bolt" type interlockmoved into the withdrawn position to allow the CB truck to be moved forwardinto the 'CB SERVICE" position.

When the CB truck has been racked forward to its operational position,(position indicator on the CB truck in line with the "CB SERVICE" position onthe floor of cubicle - see above illustration) the "shot bolt" is located into thefixed panel bracket on the inner, upper section of the enclosure, by rotatingthe castell keyantidockwise.

OPERATION OF CIRCUIT BREAKER.

OPERATING MECHANISM

This is a spring charged/stored energy power dosing mechanism speciallydesigned for opening a short stroke vacuum interrupter, and is trip free.

The dosing springs are either manually charged by the manual springcharging handle or electrically charged by a motor gear drive.

MANUAL OPERATION.

With the VCB in the "OPEN" position, manually charge up the spring using themanual charge handle, The spring charged/discharged condition is indicatedon the front of the VCB.

Manually charging should continue until a distinct loud audible"Click" Is heard.

When the spring is "charged", to dose the VCB, press the dose button. TheVCB will operate and the status is indicated on the open/dosed indicator.

To open(or trip) the VCB, press the "OPEN" button. The VCB will operate andthe status is indicated on the open/dose indicator.

ELECTRICAL OPERATION.

For the motorized type, the spring charge motor is rated at either n ov AC, or230V AC. (check the rating on the VCB rating plate.) Other ratings areavailable - check with Head Office.

Ensure that the VCB is in the disconnecled position.

Insert the VCB control plug.

I I

Connect AC supply to the control drcuit. The motor should charge up theclosing spring automatically. When the closing spring is charged, the springcharge indicator will show the status.

To close the VCB, operate the remote "close/trip" switch on the front of themetering panel. The VCB will operate and the status change is indicated onthe "open/closed" indicator.

To open the VCB, operate the remote "close/open" switch on the front of themetering panel. The VCB will operate and the status change is indicated onthe "open/close" indicator.

PADLOCKING

The following padlocking fad lities are available on the CB truck and the panel.

a) Orcuit breaker mechanism in the engaged or disengaged position.

b) Bus Bar shutters and circuit shutters - padlocked in the closed condition.

c) Front door of the ci rcuit breaker panel.

d) Earth switch in 'On' and 'Off position.

12

INTERLOCKS

Several interlocks are provided to ensure safe operation of the VeB.

veB cannot be inserted!connected if-

a) -Control plug not connected.

b) - VCB switched "on".

c) - Earthing switch in "ON" position.

d) - Incorrect rating.

VCB !;annot be withdrawn!disconnected if­

e) - VCB in "ON" position.

Control R!Y!l cannot be removed if

f) - VeB not in disconnected or withdrawn position.

VeB cannot be switched on if-

g) - VeB not property inserted or connected position.

h) - VeB not in disconnected or withdrawn position.

Earth Switch cannot close if-

J) - VeB not in withdrawn position.

13

TESTING.

Prior to deliveryI the switchboard is subjected to stringent factory tests toensure that all operations and circuits meet the requirements of appropriatestandards. The ci rcui t breaker will perform satisfactorily, provided care istaken during installation and operation of the gear.

It is essential that the commissioning of the switchboard is undertaken byskilled and competent personnel.

Warning

X-radiation can be produced when a high voltage is aRPlied across an oQ!;Olli!P in a vacuum.

The X-ray emission is negligible if the test voltage and the vacuum interrup-!'crcontact ~D is as speci fied. As an added precaut ion. when high voltagetest ing is taking place, all personnel should be at least one metre away fromphase being tested, the cubicle door closed. aDd all covers refitted to form ametal shield.

MAINTENANCE

Regular and competent maintenance is essential to ensure satisfactory andreliable operation of the switchboard after installation. Routine inspectionshould be conducted every twelve months, or more frequently if operatingconditions warrant it .

a) Lightly lubricate the items listed below -.

1. Auxiliary Switch Linkage.

2. Truck Wheels.

3. Interlock Mechanism.

4. Shutters, rollers, and pivot points.

5. Friction faces in cubicle.

b) A spanner is the only tool necessary to remove the isolating contacts.Removing the special screw provided releases the contacts to allowreplacement.

c) Inspect small wiring and check for loose connections, including wiring tothe control compartment doors.

f) carefully examine all insulators and bushing to ensure that no damagehas occurred . Clean down using clean dry cloth.

Fuses should be examined. Relays should preferably have calibration checked.Check all operating and tripping ci rcuits.

After clearing a fault the YCB should not be put back into operation withoutfirst undertaking a complete inspection and test. Unless absolutely necessary,refrain from changing existing settings. carry out inspection as described forroutine inspection but pay special attention to the following:

a) All current carrying parts should be examined for possible mechanicaldamage.

b) Inspect isolating contacts. Check tightness of fixing screws.

c) Tripping, operating and interlock mechanism should be examined forcorrect operation.

d) Check all fiXings for correct tightness before putting back into service.

d) Check for snatch gap. (After closing the Breaker). Use the 5mm slipgauge for measurement.

SETTING INSTRUCTIONS: (Common Linkage Assembly)

Before gaining access to the circuit breakers ensure that the instructionsrecommended for maintenance are followed. Once correctly set, it should notnecessary to alter the settings for the life of the interrupter contacts. As thecontacts wear in the closed position the snatch gap setting decreases and thelength of pressure spring setting increases. The contact pressure springs aredesigned to provide sufficient pressure for the full 3mm wear of the interruptercontacts.

The following setting procedure should be undertaken:

a) YCB in closed (ON) position

Set contact pressure springs to 54mm ± 0.5 mm.

Adj ust nuts to achieve snatch gaps between swivel block and locknut using the setting gauge (4mm).

Check with mechanism in latched position (i.e. after sparecharging of the spring) ensure that the length of hold open springsis between 148/ 150 mm. (closed position).

15

Check whether hold open spring dimension is 159/1 61mm Inbreaker open condition (i.e. breaker in OFF condition).

16

RESETTING INSTRUCTIONS - Mechanism

Should it become necessary to adjust any settings originally made in thefactory, the following procedure must be followed in sequence to ensuresatisfactory operation.

Mechanism over-travel setting (Ref. Fig. 6).

a) Oose the vacuum circuit breaker.

b) AdjUst nuts (01) at the bottom of the spring post (02) unti l latch (08)just moves fully under latch pin (04).

c) Unscrew nuts (01) at the bottom of spring post (02) a further 2 turnsand lock off. The mechanism is now in over-travel position.

d) Charge the main closing springs and fit safety link between pins (12)and (13) as in Fig 9. Adjust M6 stop screw (11) unit it touches pin (12)and lock off using loctite.

e) Check YCS contact pressure spring length, snatch gap and hold openspring length. Re-set as necessary.

NOTE: It is impe!i!tive that the main c1osing...mrings are <:harged prior tocarryin!l.2!!t the above checks.

Trip I Close Coil setting (Ref. Fig. 10 & 9):

a) Trip Coil setting (Ref. Fig. 10).

Loosen the trip coil assy. (06). Adjust the gap between trip pin (07) and tri pcoil plunger link to 2.5 to 3.0 mm by sliding the trip coil assy (08) within itsscrew (06). Lock off using loctite,

b) Oose Coil setting (Ref. Fig. 9)

Oosing spring release - Electrical (Ref. Fig. 9). AdjUst the gap betweenrelease roller (09) and electrical release closing coil plunger (14) to 2.5 to 3.0mm by adjusting release assembly (15) within its mountings. Fully tightenfixings and lock off using loctite .

Dashpot Settings (Ref. Fig. 7)

a) Open YCS using manual push to trip button.

b) If trip pin (07) resets automatically screw in dashpot piston (16) until cylinder(17) goes slack (l.e, reducing dimension ·Y'). SCrew piston (16) out by handunti l stopped by cylinder (17) (i.e, Increasing dimension ·Y'). Screw piston(16) out by two turns (Increasing dimension 'Y') and lock off using loctite .

17

If trip pin does not reset automatically unscrew dashpot piston (16) unti l trippin resets, and repeat the settings given in (b) above.

PUSH BUTTON TRIP - (Pre Travel Setting)

Trip release (Eiectrica l) (Ref. Fig. 10). Check trip button (18) for pre-travel distancebefore engagement with trip solenoid plunger.

If pre-travel is incorrect, loosen off lock nut (19) and adj ust screw (20) unt il the correctsetting is obtained. Retighten lock nut (19). Depress push button (18) until travelscrew (20) engages with the trip solenoid plunger face. Push button should then beable to be depressed for a further 7 mm before engagement. Adj ust as necessary.Secure using loctite.

Closing Release (Electrica)1(Ref. Fig. 10):

With the main closing springs discharged, (i .e. Breaker closed condition) depress thepush button (21) until travel screw (23) engages with release solenoid plunger face.Push button should then the able to be depressed further 7 mm. Adj ust asnecessary.Tlghten locknut (22) and secure using toctite •

Interlock settings (Ref. Fig. 10) :

a) With the springs discharged l.e., The mechanism In the over-travel position(Breaker in closed condition without spring spare charged) adjust the screwrod (35) in the clevis block (36) to give a gap of 0.5 to 1.0 mm between thepush button return plate (37) and the washer (38).

b) Recharge the closing springs and with the breaker closed check that with thepush button release fu lly depressed the closing springs will not discharge. Lockoff the clevis blocks (36) and the screw rod (35) using loctite .

18

LIST OF RECOMMENDED SPARES

Please indicate the breaker rating while ordering spares.

Auxiliary Switch

Shunt Trip CoilSpring Release Coil (Closing)

Spring charging motor

Isolating ContactMechanical Operation CounterSec. Plug and Socket

1 No. Per Board.

- 1 No. Per Board.

- 1 No. Per Board.- 1 No. Per Board.

- 6 Nos. Per Board.- 1 No. Per Board .

- 1 No. Per Board.

While ordering electrical items, please indicate the control voltage of the equipment.

..

19

MAINTENANCE SPARES FOR MECHANISM(Fig. lla/b/c)

1. Crank Shaft.

2. W.A. of Cam.

3. Torsion Spring for Charging Pawl.

4. Clutch Bearing (2026A) for Pinion Shaft.

5. Drive Link with Clutch Bearing (2510).

6. Needle Rolier Bearing ( 12 x 60 x 10).

7. Clutch Bearing (2016) for Manual Charging.

8. Pinion Shaft.

9. Main Gear.

10. Charge Link.

11. Tension Spring (for 'u' link assy.).

12. Release Link (Top 'u' link - short) .

13. Release Link (Bottom 'u' link long).

14. Trip Toggle Pin.

20

UNDERVOLTAGE RELEASE MECHANISIM

Basic requirement:An under-voltage device is induded when it is required to disconnect loads from

the supply should the voltage falls below a threshold value. This can be provided as anintegral part of the breaker as an OPTIONAL FEAlURE. The UV coil bips the d rcuitbreakers when the low voltage condition occurs. IEC-60056 (Oause 5.8.4) stipulatesthat these devices should function within the following parameters:1. The breaker should trip when the control voltage falls below 30% of rated value.2. The breaker should be prevent from being energized when the conbrol voltage

exceeds 70% but is below 85% .3. The breaker should be allowed to be energized when the control voltage is at 85%

value and above.

Gene@1 CQnstnJction:The under-voltage device used in HHV12 is depicted in Rg.!. The device is

basically an electromagnet which attracts a plunger. The plunger is restrained by acompression spring (5). A counter-weight (6) attached to the shaft of the plunger givesthe necessary momentum for the plunger to trip the breaker.

The entire arrangement of the under-voltage coil (UV coil) assembly is locatedat the left-hand side, as shown in Rg.2. The coil assembly is designed to provide asnatch gap of 4mm between the end of plunger system and the trip rod.

+c>

c>

TRIP ROD

LE FT SIDE SHEET

OF MECH ANISM

,-$-,

COUNTERWEIGHT ( 6

YOKE

POLE PIECE ( 3

l lOVDC COIL

PLUNGER ( 4 )

o

RELEASESPRING ( 5 )

FIG' . UV COIL ASSEMBLY Fig i'. . UV COIL ARRANGEM ENT

2\

OPERATION OF THE UVR:

The attraction force of the coil on the plunger and the restraining force of thecompression spring are balanced in such a manner that the following operat ions takeplace:

1. When the control voltage drops to just less than 35% of the rated value, therestraining spring force overcomes the attraction force of the coil and releases theplunger. The plunger moves towards the trip rod with the velocity imparted by thespring. The kinetic energy required to trip the breaker is aided by the counter­weight fixed to the shaft of the plunger. Overall travel is 8mm after release, andthere is a free travel of 4mm by which the plunger attains suffident energy to pushthe trip rod, and trip the breaker. 50 long the voltage is at this value the plungerposition is such that the breaker is prevented from closing even if a closingcommand is given.

2. In the condition where the control voltage exceeds 70% of the rated value but isless than 85%, the spring force is sufficient to overcome the force of the coil due toextended air gap length present between the pole-piece and the plunger.

3. When the control voltage reaches a value of just above 85% of rated value, themagnetic force of the coil overcomes the spring force, and the plunger moves100% towards the pole-piece. This allows operational conditions to be acheived(snatch gap of 4mm) and the breaker can now be closed either manually or with aremote close command.

Note:1. It is of utmost impQ!!lIn~ethat the UV coil is in an energised state.J1rior

to closing the breaker.

22

rEM DESCRIP TION

01 VACUUM CIRCUIT BREAKER TRUCK

02 SHUTTER

03 F'tXEO HOUSING / PANEL

0_ INSTRUMEN T PANEL

05 MULTI- CORE CABLE BOX

D. CURRENT TRAN SFORME R07 VOLTAGE TR ANSFORMER

08 EARTH SWI TCH

09 MAIN BU5B AR

10 EARTH BUSBAR

11 CABLE GLAND PLATE

I. 600 I

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GENERA L ARRANGEMENT OF A TYPI CAL PAN ELFIG,- 1

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TRANSIT LI FTINGNOTE : 1. WEIGH T OF PANEL WI TH TRUCK TO BE Un £D 850 kg

2. ;;: - TRANSIT HOOK S TO BE REMOVED AFTER LAYING THE PANELON PREPARED F'OUNDA TION

FIG-2

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FOUNDA TI ON PLAN

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IFOUNDATION DE TAI L FOR SINGLE BUSBAR PANEL I

i FIG.- 3 I

TO BE CONNtCTED TOSTATION EARTH

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TO BE FASTEN~D AFTERERECTION 0 PANELS

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FIG-4

CT CABLE CHAMBER

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CIRCUIT BREAKER CHAMBER

.

I

GENERAL ARRANGEMENT OF BUS BAR LAYOUT

FIG-5

21

LOCK NUT 10

08

LATCH 04

05

SPRING GUIDE PIN 06

TOGGLE UNK 02

LATCH PIN 03

TRUNION BlOa<

W.A.OF DRIVE PLA 01

TRIP TOGGLE PIN

CLOSING 07SPRINGS

\ n,'--_

\

.. .

INDICATOR

11 DASH POT CYUNDER

12 DASH POT PISTON

13 SPRING CHARGE

ARRAN GEMENT OF MECHANISMFIG.6

AND SPRING ACTUATOR

z l.

LATCH RESET SPRING

LOCK NUT

16 LUNGER

,..

17 DASH POT C'tUNDER

\\

•

TOGGLE UNKAGERESET SPRING

TRIP TOGGLE PIN 07

LATCH 08

LATCH PIN 04

VER TOGGLE UNKAGE 09-1\-

MECHANISM OPEN - DASHPOT SETTINGFIG. 7

ROLLER

EllJRN SPRING

PAM. PIN

.ROLLER PIN

CHARGING PAM.

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RELEASE BOLCK

-

PILLAR FOR DRIVE HOUSING

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Ai

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A-I

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CHARGING GEAR

-

ASSY. OF CAM

DRIVE HOUSlNG PLA

DRIVE BUSH

INTEGRAL DRIVEPINION SHAFT

ASSY. OF MANUALCHARGING LEVER

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CHARGING ASSEMBLY FIG.8

RELEASE LINK BOTTOM

21 CLOSEPUSH BUTTON

PUSH BUTTONRETURN PLATE ""3.....7

WASHER 38

PIN 13

LOCK NUT 2223 TRAVEL SCREW

35 SCREWED ROO

TENSION SPRING

15 RELEASE ASSY.

36 CLEInS

12 PIN

RELEASE~09' ROLLER

RELEASE/1~4 PLUNGER

CLOSING SPRING RELEASE SOLENOID ASSEMBLYFIG.- 9

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@ LOCK NUT

18 TRIP BUTTON

08 ffilP COIL

oo

SCREW 20

r: ................ lYffi IP TOGGLE PIN 07

FlXING SCREW 0 6

OPENING TRIP SOLENOID ASSSEMBLY

FIG.10

,2.