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Motor-drive mechanisms,

types BUE and BUL2

Maintenance guide

1ZSC000498-ABH en, Rev. 1

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Summary of Contents for BUE

Page 1: ...Motor drive mechanisms types BUE and BUL2 Maintenance guide 1ZSC000498 ABH en Rev 1...

Page 2: ...ntative ABB makes no warranty or representation and assumes no liability for the accuracy of the information in this document or for the use of such information All information in this document is sub...

Page 3: ...ate injury It may also be used to alert against unsafe practices CAUTION may also indicate property damage only hazards INFO provides additional information to assist in carrying out the work describe...

Page 4: ......

Page 5: ...ption 13 3 4 Counter 13 3 5 Heater 13 3 6 Toothed belt 14 3 7 Motor cable connections 14 3 8 Overhaul type BUE 14 3 8 1 Disc brake 14 3 8 2 Brake for the holding contact 15 3 8 3 Position transmitter...

Page 6: ......

Page 7: ...al to the service life of the transformer Minimum maintenance is required for trouble free operations The motor drive mechanism is attached to the transformer tank and connected to the on load tap cha...

Page 8: ...itch 5 RAISE LOWER switch 6 Outgoing shaft 7 Lamp 40 W socket E27 8 Lifting eye 9 Counter 10 Tap change in progress indicator 11 Position indicator with drag hands for max and min position 12 Shaft fo...

Page 9: ...chanical design of motor drive mechanism type BUE Position transmitter Contact plate Brake Roll pin Supporting shaft Holding contact Brake disc Brake block Brake for holding contact Cam disc Motor Too...

Page 10: ...ress White in position 3 Counter 4 Outgoing shaft with multi hole coupling half 5 Shaft for hand crank 6 Locking device prepared for padlock 7 Option Outlet 8 Emergency stop 9 RAISE LOWER switch 10 LO...

Page 11: ...1 Operation counter Roller Notch Cam disc Brake arm Geneva wheel Grease Grease Adjusting screw Holding contact Brake disc Multi position switches Limit switch Bracket Toothed belt Grease Fig 4 Mechani...

Page 12: ...cator increases decreases one step and the counter advances one step for each operation Record the counter s value The counter shows the number of operations run by the tap changer the overhaul schedu...

Page 13: ...3 8 3 for BUE Section 3 9 2 for BUL2 Lubrication Section 3 8 4 for BUE Section 3 9 3 for BUL2 Reconnect the power supply and carry out operation tests according to the instructions in the tap changer...

Page 14: ...ured on the hand crank This can be adjusted by tightening both of the spring bolts on the brake Using the hand crank operate the motor drive mechanism until the brake is fully open At this point the l...

Page 15: ...must be adjusted 0 8 mm 0 3 0 3 Contact arm View A A Moving contact Fixed contact Contact plate Contact arm Geneva wheel Fig 7 Contact arm play 3 8 3 Position transmitter and other position switches C...

Page 16: ...Maintenance guide BUE BUL2 1ZSC000498 ABH en Rev 1 NOTE The small bevel gear for the position indicator shaft must be greased Fig 8 Lubrication points type BUE Grease Grease Oil Grease Grease Grease O...

Page 17: ...ISE and LOWER operations No adjustment of the contacts should be made If there is excessive dust it can be removed from the circuit boards and the transparent covers with a vacuum cleaner without disa...

Page 18: ...E or LOWER impulse and after about one second press the emergency stop The operation should be interrupted Reset the emergency stop by turning the knob clockwise and switch on the protective motor swi...

Page 19: ...5 10 kg 5 kg 65 kg Silver 10 g 10 g x Plastics chlorsulphonated polyethylene x x x polyamide with MoS2 x x phenol resin laminate x polyester x x x PVC x x x carbonate plastic x x x Rubbers nitrile ru...

Page 20: ...opyright 2012 ABB All rights reserved 1ZSC000498 ABH en Rev 1 2012 11 15 ABB AB Components SE 771 80 Ludvika Sweden Phone 46 240 78 20 00 Fax 46 240 121 57 E Mail sales se abb com www abb com electric...

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