CTB Operating Mechanism for ZW32 Outdoor Recloser(Motor Operation)

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<AC High Voltage Circuit Breaker> 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. . The control device of over-current release protection is with following function: surge current, time delay, and quick breaking, this product is suitable under following working conditions:

A. Surrounding air temperature up limit is +40℃,down limit 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 accident, explosion danger, serious dirtiness and severe shake.

1.3 Operating mechanism’s weight: 12kg.

2. Structure and working principle

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

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 Click 16. Cam

17. Supporting Column 18. Wheel 19. Closing Coil