CTB Circuit Breaker Operating Mechanism for ZW32- 12 Outdoor High Voltage Circuit Breakers

1. Overview

1.1 Model No & Name

     CTB spring operating mechanism have two types, manual type operating mechanism and motor type operating mechanism.

 1.2 Its main functions and working conditions

     This operating mechanism will be used in ZW32-12 outdoor high voltage vacuum circuit breaker ( designed by Beijing Electrical Science Academy ) and other power nearby outdoor or indoor high voltage vacuum circuit breaker, its performances can meet requires of GB1984 and the product’s < Technical Conditions>; Manual type operating mechanism holds functions of manual energy-storage,manual closing/opening,overcurrent protection . Motor type operating mechanism functions including motor or manual energy-storage,electromagnet or manual closing/opening,overcurrent protection ,etc . To make overcurrent-protection -purposed contorrer have surge current, time-delay amd fast-breaking fuctions, this product is suitable under following working conditions :

A.Surrounding air temperature up limit is +40℃,down litmit is -45℃.

B.Elevation is not higher than 2000m, wind speed not over 35m/s.

C. Related humidity , day average is not over 95%, month average is not 90% (+25℃). Water vapor pressure, day average is not over 2.2X10³Mpa,month average is not over 1.8X10³MPa.

D. The using venue should be no fire accedent,  explosion danger, serious dirtiness and severe shake .

1.3 Operating mechanism’s weight: CTB manual type: 8.6kg.          CTB motor type: 12kg

2. Structure and working principle

2.1  CTB operating mechanism ( manual type)’s structure is as Pic1

      CTB( motor type)’s structure is as Pic2.

 PICTURE 1

1 .  Installing Column    2. Pinion Gear      3 . Energy Storing Axis   4. Large Gear

5.  Closing Half Shaft    6. Output Crankarm   7. Supporting Column   8. Breaking Click

9.  Breaking Half Shaft   10. Overcurrent Coil    11. Energy Storing Crankarm   12 .  Energy Storing Spring

13 . Cam                14.  Main Axis         15. Wheel        16. Clutch Plate

  PICTURE 2

1 .  Installing Column        2. Motor             3. Main Axis            4 . Energy Storing Axis

5.  Pinion Gear             6. Spring Crankarm      7. Output Crankarm    8. Wheel    

9. Breaking Click           10  Breaking Half Shaft    11. Breaking Coil     12. Overcurrent Coil   

13. Breaking Spring         14. Closing Spring        15.Closing Clik        16. Cam   

17. Supporting Column       18. Wheel               19. Closing Coil

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