Related Manuals for ABB HPA 12kV
Summary of Contents for ABB HPA 12kV
- Page 1 MV SF6 Indoor Circuit Breaker Model HPA 12kV, 24kV & 36kV 1VDU22001-YN Instruction for Installation, Service and Maintenance...
- Page 2 Notice Based on our own experience, you will obtain the best possible operational reliability from our equipment by following the recommendations given in these instructions. The data contained herein purports solely to describe the product and is not a warranty of performance or characteristics. It is with the best interests of our customers in mind that we constantly strive to improve our products and keep them abreast of advances in technology.
-
Page 3: Table Of Contents
Contents Data Construction & Function 1.2.1 Breaker Poles 1.2.2 Operating mechanism Maintenance 1.3.1 Maintenance schedule 1.3.2 Checking and refilling of SF gas 1.3.3 Control of gas pressure (Only for poles without pressure gauge) 1.3.4 Checking for operating speed and time Service instruction 1.4.1 Fault finding chart 1.4.2 Replacement of operating coils... -
Page 4: Data
HPA - BREAKER Data * Rated voltage * Rated current 1250, 1600, 1250, 2000, 1250, 2000, 2500, 2500 1600, 3000 2000 * Rated breaking current 26.3 26.3 * Rated making current (peak) Short time rated current, 1/3 sec 26.3 26.3 Sf pressure, (over pressure) Electrical endurance, (number of... - Page 5 The main characteristics of Sf gas are: The gas is neither combustible nor toxic. It is chemically stable and will not age with time. Breaking capacity of Sf6 gas is high even at relatively low pressure, because of its superior dielectric and thermal properties. The interruption in Sf gas is not forced and thus no over voltages are generated.
- Page 6 During the manufacture of the breaker pole, it is dried internally through vacuum pumping. The breaker pole is then pressurized and also tested against leaks. Inside the pole there is an absorption medium for the decomposition products of the gas. The breaker poles should only be opened up by trained service personnel at the manufacturing factory.
- Page 7 Fig - 3b (HPA breaker pole for 36 kV)
- Page 8 The latching and trip-free devices (1) and (14) are of the same type that have been used in ABB equipment since 1950 and have proven extremely reliable. The motor operated unit consists of a toothed transmission gear with an eccentrically driven tooth wheel as a last step.
- Page 9 Fig - 5 (Circuit Breaker)
-
Page 10: Operating Mechanism
SPRING MECHANISM SR. NO. ITEM DESCRIPTION PART NO. 1 & 2 Trip free device top IN 5436 0001 - A Upper shaft assembly IN 5439 0002 - D Link or pull rod IN 2104 00101 - AK Opening spring IN 2192 0002 - D Bottom shaft assembly IN 5439 0002 - B Insulating links... - Page 11 Operating Mechanism Working Principle: Fig. 6A shows the operating device with the breaker in the open position. The closing spring (11) is charged if the latch (2) is tripped, the upper shaft is released, its turning is transmitted via link (12) to the breaker pole shafts (6).
-
Page 12: Maintenance
OVERHAUL & LUBRICATION OF CHARGING DEVICE AND OPERATING GEAR ---- ---- ---- GAS PRESSURE CHECK NOTE 1) Complete overhaul of circuit breaker with replacement of poles to be done after 10,000 operations. 2) Ask ABB for details of overhaul procedures. (10) - Page 13 Fig. 7A Maintenance schedule for frequently operated breaker type HPA (1VYN400290-005) (11)
- Page 14 Fig. 7B Maintenance schedule for frequently operated breaker type HPA (1VYN400290-005) (12)
- Page 15 Electrical endurance (HPA) (13)
-
Page 16: Checking And Refilling Of Sf Gas
1.3.2 Checking and Refilling of SF Gas Checking and refilling can be done with the front plate fixed. Refilling not be carried out with the breaker in service position. The gas pressure should be between 3 and 3.5 bar absolute, in other words 2 and 2.5 bar over pressure at 20 C. Lower currents than 25kA can still be in broken at lower pressure. -
Page 17: Control Of Gas Pressure
SF GAS REFILLING EQUIPMENT Sr. No. ITEM DESCRIPTION PART No. Gas cylinder S 194-5600-103-17 supplied in 10 kg or 25 kg cylinder. Regulator a) cylinder pressure gauge b) outlet pressure gauge c) reducing valve IN 6821 0001 - 1 Pressure House IN 2515 0001 - 1 Gas filling valve ‘OR’... -
Page 18: Checking For Operating Speed And Time
18. Check the O-ring of the covers, if they are dry, exchange with new ones which have been greased with ABB grease IN 1171 4014 - 49. Note: Mineral grease must not be used on EPDMO - rings. Replace the cover on the connection nipple. -
Page 19: Service Instruction
Functional check is carried out as follows 1. Connect the sensor to the connecting link of the poles, see fig. 10. 2. Check with the aid of vernier callipers that the movement from open to closed positions is 81 - 85 mm. 3. -
Page 20: Fault Finding Chart
1.4.1 Fault finding chart FAULT CAUSE REMEDY Spring will not charge Motor has wrong or no Measure voltage on the operating voltage motor leads. Motor shaft broken Change motor Motor gear damage Change motor The latch for tripping Check mechanism device does not function NOTE: Read safety instruction in paragraph... -
Page 21: Replacement Of Operating Coils
1.4.2 Replacement of operating coils For positioning of operating coils, see fig. 11A & 11B. The coil is fixed with 4 screws. Fig - 11A (Replacement of Trip coil & auxiliary switch) (19) -
Page 22: Replacement Of Micro Switch
Fig - 11B (Replacement of closing coil) 1.4.3 Replacement of Micro-Switch For positioning of micro-switches, see fig. 12. The switches are fixed with 2 screws. Fig - 12 (Replacement of Micro - switch) (20) -
Page 23: Replacement Of Auxiliary Contacts
1.4.4 Replacement of auxiliary contacts Positioning of auxiliary contacts, see fig. 5. The contacts are fixed with 4 screws. Remove the 2 links as shown in the fig. 11A Disconnecting cable (note marking before removing switch and connect in same position). 1.4.5 Replacement of motor Motor is fixed with 4 screws. -
Page 24: Replacement Of Operating Mechanism
Reasons for changing the damping device can be oil leaks normally the device does not need maintenance. Repair of the device must not be carried out. Never operate the breaker without the damping device as damage to the breaker can occur. Fig - 14 (Locking of the release mechanism for spring) Changing of damping device is carried out as follows:... -
Page 25: Changing Of Breaker Pole
CHANGING OF BREAKER POLE SR. NO. ITEM DESCRIPTION PART NO. Sliding contact screws IN 2121 2016 - 408 Operating mechanism IN 5432 0001 - F Fixing screw and operating arm IN 2121 2016 - 418 Density gauge IN 5663 162 - 1 Nut M-45 IN 2126 0001 - 9 Nut M-27... -
Page 26: Hpa - Operating Gear Adjustments
1.4.8 Changing of breaker pole 1. Loosen the operating device according to section 1.4.7 2. Loosen the 2 screws of the operating arms. (The pole in the middle has no screws). Remove the links and arms. 3. Remove the density gauge (special key) or loosen the cover for gas refilling. 4. -
Page 27: Accessories Spare Parts And Additional Equipment
6. Link (E). Mount charging device on the spring mechanism. Adjust link (E) to allow the trip free device to catch when the closing spring is about to be charged. Ensure that coupling is locked in 2 step of knife catch. 7. - Page 28 The above quantity we estimate to be suitable for a station size of between 1 - 10 cubicles. You must state voltage when ordering You must state rated voltage and rated current when ordering. For details refer SAFESIX spare part list. Crank For cranking on cubicle front.