Casing details mechanism housing, flanges etc : In the case of minor leaks all sealing joints are to be checked with a leak detector. In the case of major leaks, it is recommended that the leaks are located using soapy water. Crank Mechanism seals : Leaking crankshaft seals must be replaced according to section 7. Control Circuits If a switching command is delayed, or executed only partially or not at all, proceed as follows: -. Check coils of solenoid valve , and if necessary change defective coils.
The cause of the overload has to be established and eliminated. Check the function of the circuit breaker when the density monitor is disconnected.
When it is confirmed that the density monitor is defective, it has to be replaced. Inspection intervals Important checkpoints, acceptable tolerances, certain functional values for adjustments, and recommended inspection intervals can be found in the following inspection chart.
In corrosive or polluted air and in climates with a high relative humidity, it can be necessary to halve the inspection intervals. The specified inspection intervals should be considered as recommended guide values, which can be increased or decreased depending on local conditions. Preventive maintenance Intermediate inspection Operation testing including time checks Heat measurements.
Preventive maintenance General inspection of the circuit-breaker and operating mechanism. Overhaul Overhaul of the breaker chamber Line breaker Transformer breaker Capacitor battery breaker Reactor breaker Filter breaker Non-synchronised Synchronised Complete overhaul. Closing spring untensioned, circuit-breaker open, disconnected and earthed. Circuit-breaker poles removed and transported indoors.
Complete circuit-breaker including operating mechanism transported to the workshop. Personnel authorised by ABB to carry out assembly, commissioning and maintenance work. In certain cases, with instructions from ABB.
Parts marked as can be replaced by piston assembly 1HYNR1, which is the part of moving contact part no. Inspect means : Inspect the part thoroughly for wear and replace if necessary.
It is not necessary to replace the part if at the endangered points it exhibits no or only slight wear and if silver plating is not damaged. Maintenance work in general, and contact overhaul in particular, shall be carried out in closed and as dust-free premises as possible. In principle, all sealing units, spring washers and locking rings which are dismantled during maintenance work shall be replaced by new such parts.
Operate the circuit-breaker to position b1 uncharged and position OPEN fig. Open the disconnectors on both sides of the circuit-breaker. Switch off control, signal, motor, and heating voltages. Earth the high-voltage cables on both sides of the circuit-breaker according to local regulations and disconnect them from the circuit-breaker.
Disconnect control, signal, motor and heater circuits. Remove the cap nuts on the check valves so that the groove in its threads is visible. Move the gas tube as far as possible to the side so that it comes against the cap nut.
In this position, all three check valves are closed and the cap nuts can be completely loosened while moving the tube system further to the side. Fasten lifting ropes under the upper flange of the breaker chamber insulator and tension them slightly.
Remove screw, washer and nut, , , fig. Move out the breaker poles to the side. Thereby, the coupling shaft fig. Transport the breaker poles to the assembly shop and place them on an assembly block supplied by the customer.
Fasten the lifting rope under the flange and tension it slightly. Remove screw, washer and nut, , , Parts from the various poles must not be interchanged. This is important since parts in the arm and link systems are not identical. All poles are disassembled in the same way. Place the breaker pole on the assembly table. Fastening points are the post and breaker chamber insulators upper flanges and the adapter plate Then lift out the desiccant container.
Treat this according to prevailing local regulations. Unscrew and pull it out as far as possible. Take out the mechanism housing completely. Knock out the flow direction tube base with dismantling rod and adapter fig. Remove pin Do not damage the sealing surfaces on the insulators and mechanism housing. Be careful also with the O-ring grooves in the flanges. Loosen hexagon screws from contact finger cage Lift off the finger cage. Thereby, the fingers fall out. As a general rule, change the fixed contact pin , countersunk screws , and all contact fingers Clamp the piston in wooden jaws or prisms.
Push flow direction tube base out of flow direction tube and unscrew the piston base with the special torque wrench fig. Remove the socket head screw and lock washer Take out the contact ring with nozzle and disassemble them.
Remove the long screw from the cylinder base , and pressure relief flap with compression springs Check the piston , flow direction tube and cylinder , with regard to damage. Replace all piston guide rings , cylinder guide ring , multi-contact rings , compression springs , insulating nozzle , auxiliary nozzle , erosion finger , contact ring and spring washers Treat the contact surfaces of the fixed contact pins with polishing cloth and grease N, and the contact fingers with grease N but no polishing cloth.
Screw the fixed contact pin with hexagon wrench fig. Observe the tightening torque. NOTE Only the last two threads of the fixed contact holder are to be treated with locking fluid. There must be no locking fluid on the contact surfaces, see fig. When changing contact fingers, proceed as follows: Slide the finger cage over the fixed contact holder up to 15 mm before the end position. Insert fingers , including springs, and then push the finger cage to the end position.
Screw in the countersunk screws and secure with locking fluid B. NOTE: Only on the last four threads. Mount the erosion finger by special wrench fig. Apply fluid E on the thread on sleeve Mount by hand and secure with locking fluid C. Note Only the last thread shall be treated with locking liquid fig. Remember to remove the inside catch piece of the special wrench Clean and grease the fixed contact surfaces between the contact ring and piston with grease N.
Mount the contact ring, including insulating nozzle , screw and washer, , , on the piston. Observe the tightening torque and locking. Mount the piston base with torque wrench fig.
Replace cylinder guide rind in the cylinder base , piston guide rinds , and multi-contact rings in the piston Observe, when doing so, the direction of the multi-contact firings. Insert carefully the assembled middle part into cylinder and flow direction tube , in cylinder base Note that there shall be an angle of 90 between the flow direction tube window and the cylinder base window.
Thereby, the middle part must not be turned, but if so happens only in the direction of the arrow. Mount the long screws , with pressure relief flap and compression springs Secure with locking fluid B. Remove screw and washer and , or and , with shaft guard , and disassemble completely. Unscrew socket head screw with washers and , and pull out the joint pin Replace the following parts: O-ring X-ring Sealing ring Clean the metal parts that are not changed.
Reassemble in reverse order. Be careful that the sealing rings are not damaged by the splines. Apply grease G on joint pin NOTE For the relative positions of the punch marks, see e in fig. Apply grease fluor-silicone grease S on the outer diameter c and assembly surface a on shaft guard Assembly of breaker pole fig. Push in the flow direction tube base and retaining ring so far into the flow direction tube that the pin can be inserted.
Slide the operating insulator with screen over the flow direction tube. Insert pin so that the bore in the bolt is in line with the centre-line of the operating insulator. Insert the flow direction tube base through the bore in pin until it reaches stop. Check that the rear blow-off hole is completely open. Place the ring so that the set screw can be screwed into the bore in the flow direction tube Insert set screw , tighten lock nut and secure with locking fluid B.
Assemble the operating insulator socket and pin on the operating insulator. At this assembly the bore in the pin must be in line with the centre-line of the operating insulator.
Clean the contact surface on the terminal flange. Rub the fixed contact surface on the cylinder base with a polishing cloth. Apply grease N on the rubbed surfaces. Apply grease N, Fomblin, on the marked moving contact surface of contact ring fig. Place the O-rings in the grooves. Place the breaker chamber insulator on the flange and thereby try to locate the moving contact as far as possible in the middle of the insulator.
Apply grease S on the O-rings and the groove for these in the adapter plate, and put the O-rings in the groove. Determination of the adjusting measurement A between the operating insulator socket and linkage joint fig. Place the depth gauge on the flange of the breaker chamber insulator. Push the operating insulator upwards to stop.
Place the straight edge on the lower insulator flange. Measure the X measurement. B1 and C1 have the same setting value A. For assembly of the complete fixed contact , see fig.
Now mount the contact with flange on the upper flange of the breaker chamber insulator and try to place the contact as far as possible in the middle of the insulator. Observe tightening torque 79 Nm. Apply S grease in the O-ring groove of the adapter plate and on the O-rings. Place the O-rings in their grooves. Observe the tightening torque 79 Nm. Filling gas : After the circuit-breaker has been dismantled for overhaul or repair it shall before trial switching operation be filled with SF6.
Evacuate down to the pressure 1 mbar and continue to pump at least one hour after that pressure has been reached. Stop evacuating and fill the circuit-breaker with dry and pure nitrogen gas to the atmospheric pressure. Let it stand two hours at this pressure. Evacuate again to 1 mbar and fill with pure SF6 gas to 0. Observe thereby the safety regulations for gas filling.
Set the middle breaker pole at max. OPEN position, and place the actuating lever in correct position according to punch marking a fig. Lower the pole on support frames and place the connecting rod joint head in the actuating lever fork. The operating mechanism must be in position OPEN.
Insert the hexagon screws Fit nut with washer and tighten slightly so that the pole can be turned easily. Apply grease G Mobile Grease 28 on joint pin Mount the spring washer, spacer and hexagon screw, , and Place coupling shaft in the coupling sleeve and actuating lever.
Apply grease G on the splines. Set the outer poles in OPEN position and push them from the outside with coupling sleeves as far as possible over the coupling shafts. Insert the hexagon screws , fit the nuts and spacers , and then tighten after adjusting the breaker poles into correct position. The joint heads on the connecting rod must be moveable, and the coupling shafts must be moveable axially. Clean the gas system by blowing SF6, gas via the. Allow the gas to continue to flow while the system is connected to the check valves of the mechanism housing, according to fig.
Screw on all cap nuts up to the groove. Then tighten all cap nuts fully while moving the complete tube system to the side. Lock all fastening bolts. If the connections of the gas system to the header block have been dismantled, they shall be secured with locking fluid B when re-installed. Observe the tightening torque 45 Nm. Fill with pure gas to normal working pressure 0.
Clean the transfer roller A shaft, worm wheel G, and worm screw H, and apply grease on the machined surfaces without dismantling. Use grease G. After switching cycles, the spring operating mechanism shall be overhauled. Contact ABB. Order no Type designation Serial number Publication number Part number Part designation. See order documentation See nameplate See nameplate See end paper See spare parts list See spare parts list. Fixed contact pin Finger Compl.
Legend to Fig. Observe carefully that the direction of rotation given in the figure is kept. If it is not followed, the lamella of the multi-contact will be destroyed.
Specifications Specifications are contained in the order documentation and on the rating plate. For internal transport and assembly see the instructions for erection and operation of the circuit breaker, Fig. Construction The stored-energy spring operating mechanism comprises the following main parts :. Operating mechanism cubicle Fig. There is a door with an inspection window for reading the position indicator EV and the spring charge indicator EV on the operating mechanism front.
The door can be locked with a padlock. When the door is opened, the electrical panel with its electrical components becomes accessible and the hand crank can be inserted. The operating mechanism cubicle is designed so that the basic mechanism and the electrical components are hermetically protected against the effects of the weather. The outdoor circuit breaker type EDF has the cubicle mounted below the pole beams of the breaker. The connecting rod projects upwards. Drive mechanics Fig.
Their -. Driving units Fig. Lever EV is located on the output shaft and when it rotates, it transmits the rotary movement to the connecting rod. Connecting rod compl EV FSA 1 constitutes the connection between the operating mechanism and the circuit breaker. Bellows EV seals the operating mechanism cubicle at the connecting rod. In the mechanism type FSA 1, the electrical control and monitoring elements necessary for the control of the circuit breaker are additionally arranged on the switchgear panel.
If the operating mechanism is to be stored outdoors for periods longer than four weeks, the heater should be connected. By means of lever EV , the output shaft EV transmits the closing or opening movement to the connecting rod, and hence to the circuit breaker.
The motor EV with reducer gear EV charges the operating mechanism mechanically tensions the closing spring. The motor limit switch, EV , opens when the closing spring is tensioned.
On discharging, closing spring EV release uses the energy to charge the opening spring via the output shaft, at the same time closing the breaker. Closing unit EV holds the closing spring in the charged condition or it releases it on command electrically via the CLOSE magnet coil or mechanically by hand. Opening unit EV holds the opening spring in the charged condition or releases it on command electrically via the OPEN magnet coil or mechanically by hand. Hydraulic shock absorber EV is double acting.
It assures a dampened opening and closing operation. Auxiliary switch EV is controlled by the position of the circuit breaker. They also prevent the CLOSE magnet coils from being excited when the circuit breaker is closed or the closing spring is not fully charged, or they prevent the OPEN magnet coils from being energized when the circuit breaker is opened. Heater EV Fig. The heating resistor prevents condensation in the operating mechanism cubicle.
The heating resistor remains permanently turned on. Charging the closing spring Fig. The hand crank coupling EV prevents the hand crank from turning during the electrical charging of the spring.
The motor EV is also decoupled by coupling shaft EV when the spring is charged by hand. For charging the closing spring approx. On a rotation the crank EV runs through top dead center.
The switching cam of crank EV simultaneously reaches the motor limit switch EV and cam follower lever EV is lifted. The following functions are thereby initiated : -. When the engagement lever EV or the closing coil EV are actuated by hand or electrically, the lever and the blocking hook EV of the closing unit release the control disk pawl EV By releasing the closing spring EV , the main shaft EV rotates in the direction shown on fig.
The output shaft EV is thereby rotated and the circuit breaker is closed via operating lever EV and connecting rod compl. Simultaneously, opening spring EV is charged. When the output shaft has rotated by 60 o, the control disk pawl passes over the cam follower EV and then the output shaft is released and can rotate in the opposite direction.
However, this is not possible as long as holding cam EV is held by lever EV and blocking hook EV of the opening unit. The closing spring EV is automatically recharged again. In this position the following indications are visible : -.
The operating mechanism is ready for another rapid closing operation but the interlock hook EV prevents the execution of a closing operation, while the circuit breaker is closed. By discharging the opening spring EV , the output shaft EV rotates , thereby opening the circuit breaker via the connecting rod. The interlock hook EV of the closing block is released at the end of the opening operation and a new closing operation can be executed. Delivery Each circuit breaker is delivered with its corresponding operating mechanism which is packed separately or already mounted on the circuit breaker pole beams.
At delivery, both springs are uncharged and the circuit breaker is in open position. Installation Fig. Make sure that the number of the circuit breaker corresponds with the number on the operating mechanism rating plate. The operating mechanism must be mounted on the circuit breaker according to the instruction for erection and operation of the circuit breaker. Connect electrical connections according to valid circuit diagram.
Never operate the operating mechanism if it is not connected to the circuit breaker filled with SF6-gas to 0. Function tests Function tests are performed after the commissioning work and immediately before the circuit breaker is taken into service, as well as after overhaul work. Function tests may only be performed with the circuit breaker disconnected from the high-voltage system and filled with SF6-gas to 0. When the closing spring has reached the desired tension, it automatically uncouples the pull hook EV of the main shaft, thereby releasing the hand crank.
During these trial switching operations, the position indicators EV and EV and the counter must be tested for proper functioning. The charging of the closing springs starts as soon as the motor supply is switched on. The supply of power to the motor is turned off automatically by microswitch EV when the closing spring is adequately charged. Duty-related overhaul Fig. Treat rod end joint with grease G Mobile Grease 28 Disassembly and assembly as described in the instructions for erection and operation of the circuit breaker.
No work is allowed to be carried out until the closing and opening springs are discharged, and the circuit breaker is in the OPEN O position. The power to the motor must be disconnected. After CO switching operations, a general overhaul must be performed by specialized staff.
Please contact the manufacturer or his representative. See order documentation See rating plate See rating plate See spare parts list See spare parts list Outdoor See spare parts list. Storage instruction Before the erection, the operating mechanisms shall be stored indoors or under a roof as long as possible. If the units are stored outdoors, they must be prevented from standing in water pools. With outdoor storage for long periods, the units shall be covered with tarpaulin and the heating elements of the operating mechanism shall be connected.
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Download now. Related titles. Carousel Previous Carousel Next. Jump to Page. Search inside document. A Page 1 Types of Lubricants for Switching Devices As a guide to the selection of Lubricants and oils, a description is given below of the range of applications. A Page 1 Locking Liquid For Threads As a guide to selection of locking liquids, a description is given below of the range of applications.
Locking Liquid A Weak locking and setting of set screws. Locking Liquid B Medium strong locking of threads and sealing of screws and nuts.
Locking Liquid C Strong locking and sealing of studs and bolts up to M Difficult to dismantle. Locking Liquid D Locking of fasteners after assembly or adjustment. Safety precautions 2. Cleanliness 3. Cleaning 4. Waste disposal 5. A Page 1 1. A Page 2 3. While choosing conveying equipment, the following should be observed : Packing case markings The distance and road conditions The units should be transported in such a way that they are - Prevented from standing in water Not exposed to rough handling and damages Covered by at least tarpaulin, protected against water Every transport unit must be fixed during the transport.
A Page 2 Lifting Before lifting, the symbols on the transport unit such as centre of gravity, weight etc. A Page 3 Stacking Transport units with different widths may not be stacked the pressure may break the cover of the lower transport units.
A Page 1 Storage prior to erection General Circuit breakers intended for outdoor operation are generally delivered in units which are determined for transport reasons.
On arrival, each unit should be checked in the following way : - delivery is in accordance with order and delivery documents any damage in delivery, and material loss In cases where damages are detected or suspected, the units should be opened and damages should be photographed. A Page 2 The tarpaulin should not be placed directly on the galvanised surface.
Introduction 2. Thermal and dielectric breaking capacity 3. Chemical reactions in Circuit Breakers 4. Criteria for choice of mixed gas 5. Filling mixed gas 6. Measuring gas mixing proportions 7.
Safety regulations 9. Dielectric region Figure A. Stress on a circuit-breaker at breaking moment Gas flow Figure B. A Page 2 These stresses are : 1. Thermal range At current zero the hot arc channel shall be cooled down quickly to a temperature which makes it electrically non-conductive, Figure B. Dielectric range After current zero the circuit-breaker must, for a short moment, withstand the full top value of the transient recovery voltage without dielectric breakdown.
A Page 3 The carbon which is formed according to 2 reacts with fluorine atoms which are produced according to 3 and form CF4 gas, whereby the carbon is bound and carbonisation is avoided.
A Page 5 7. A Page 6 8. Safety Regulations 8. These are described below : DANGER indicates an immediate risk situation that can lead to death or serious personal injury if not avoided. Warning Caution indicates a risk situation that can lead to small or moderate damage.
Caution Note Important Note is used when there is danger that can lead to equipment damage only. Important indicates an operation or a suggestion for handling. A Page 2 1. RISK 1. Work on ladders and platforms The work shall follow the directions of the Authority for occupational safety and health.
Do not connect control or heating voltage until all connection work is completed. Squeezing risk in operating device and link system. Warning plate is placed on the supporting frame. Damage in the porcelain can cause the porcelain to break, No work must be carried out unless the closing and opening springs are uncharged and the circuitbreaker in position OFF O disconnect voltage to the motor. A Page 3 2. A Disposal and Recycling Information The information in this document is subject to alteration without prior notice and should not be regarded as an undertaking from ABB Limited.
A Contents 1. Disposal and recycling 1. The gas can be taken care of in different ways depending on the circumstances : Regenerated on site, and reused in other equipment Sent to a gas supplier for regeneration Sent for destruction at a special waste disposal centre In those cases where the circuit-breaker is filled with mixed gas, the SF6-gas is separated from the mixture for continued handling as set out above. A Page 3 1. A Contents Page 1. The circuit-breaker consists mainly of: - 2.
Monitoring unit: - Gas density The density monitor temperature compensated pressure monitor monitors the insulation gas pressure in the breaker poles and sends, via its auxiliary contactor, the signal filling of SF6 gas if gas losses have occurred.
A Page 3 3. Lifting ropes Dimension drawing, erection drawings and circuit diagram. Circuit-breaker material according to erection drawings. Torque wrench Normal thermometer for ambient temperature. A Page 4 4. This is done by releasing the lower fasteners g fig. Tighten locknuts by holding the operating rod Observe MD 4. A Page 5 5. Lubricate the sealing rings supplied with density monitor 7 with grease G.
Fit the density monitor on the gas valve 8 on the breaker. Connect above assembly to the circuit breakers gas valve 5. Open regulator to fill gas in circuit breaker to rated pressure as per fig. Dismantle the hose coupling assembly from the gas valve on the circuit breaker. Close the valve on the gas cylinder. A Page 6 5. This trial switching shall take place only if: - the circuit-breaker is disconnected from the high-voltage network and earthed according to regulations SF6 gas or mixed gas pressure is at rated pressure spring charging indicator on the spring operated mechanism is in position b2 fig.
A Page 7 5. A Page 8 5. Connect the circuit-breaker to the high-voltage network. Check that the safety regulations are followed. Put the circuit-breaker into service. A Page 9 5. If NO mention the shortages : Instruction manual available? Schematic drawing available?
Operating drives box stored indoor? Accessories box stored indoor? Was the outdoor equipment stored above HFL Highest flood level?
Is there levelling nut available below structure? Is the top side of the structure base plate as per G. Is direction of the structure as per G. Is the structure levelled in x , y and z axis as per G. Are the foundation bolts filled with mortar? Any damage observed on gas pipe while mounting the breaker poles on the structure?
Is the gas monitoring system fixed as per G. Tightness of all the electrical terminals verified? Check carried out by : If points as set out above have been completed, the circuit-breaker can be commissioned. A Page 13 Troubleshooting Before any activity is started, the circuit breaker has to be isolated from the highvoltage system and earthed according to regulations.
If leaks are suspected in the SF6 system, proceed as follows : - SF6 gas lines : Check all screwed and brazed joints with a leak detector. Control Circuits If a switching command is delayed, or executed only partially or not at all, proceed as follows: - Switch off control and auxiliary current circuit.
Check the electrical terminals in the control circuits for tightness and proper connection. Compare wiring with wiring diagrams and correct if necessary. Switch on and check control voltage. Switching or blocking occurs in the wrong pressure range. A Page 14 7. A Page 15 7.
Condition of circuitbreaker during work Competence requirements a1 a2 years, 2 mech. Explanation: 1 Mech. A Page 16 Condition of the circuit-breaker during work : a1 Circuit-breaker in operation. Competence requirements : a2 Substation personnel with no special training. A Page 25 7. A Page 26 7. A Page 27 Dismantling middle pole: - Pull out the coupling shaft Dismantle connecting rod f fig. Lift the breaker pole upwards and transport it to the assembly shop.
Empty SF6 gas through a connected dust filter. Observe meticulous cleanliness in all following work. Thread off the set screw in with its locking nut from adjusting ring A Page 28 Unscrew the post insulator from the adapter plate Unscrew the fixed contact pin with socket wrench Carefully take out the moving middle part.
Unscrew sleeve Unscrew erosion finger with torque wrench socket A Page 29 When changing contact fingers, proceed as follows: Slide the finger cage over the fixed contact holder up to 15 mm before the end position.
A Page 30 7. X-ring Sealing ring Clean the metal parts that are not changed. Push in the ring over flow direction tube Assembly of the moving contact on the terminal flange - Clean the contact surface on the terminal flange.
Remove the depth gauge and straight edge Install the desiccant container filled with desiccant see fig. Apply grease S fluor-silicone on the sealing surfaces. A Page 33 7. Spare parts 8. Unpacking : shortly before use. Type designation Serial number Publication number Part number Part designation See order documentation See nameplate See nameplate See end paper See spare parts list See spare parts list Spare parts 8. Art No. Name of Item Fig. A Page 34 8. A Page 35 8.
A Page 36 8. Name of Item Article No. A Page 37 Appendix A Page 38 Fig. Operating mechanism incl. A Page 40 Legend to Fig. A Page 42 Legend to Fig. A Page 44 Legend to Fig. A Page 46 Legend to Fig. A Page 48 Legend to Fig. A Page 50 Legend to Fig. A Page 52 Legend to Fig. A Page 54 Legend to Fig. A Page 56 Legend to Fig. A Page 58 Legend to Fig. A Page 60 Legend to Fig. A Page 62 Legend to Fig.
A Page 64 Legend to Fig. A Page 66 Legend to Fig. A Page 74 Legend to Fig. A Page 76 Legend to Fig. A Page 78 Legend to Fig. A Page 80 Legend to Fig. A Page 82 Legend to Fig. A Page 84 Legend to Fig. Nm ft. A Page 86 Legend to Fig. A Page 88 Legend to Fig. A Page 90 Legend to Fig. A Page 92 Legend to Fig. General 2. Construction 3. Function 4.
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