CTB Operating Mechanism for Outdoor High
Voltage Circuit Breaker （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
