CTB Operating Mechanism for Outdoor High
Voltage Circuit Breaker (Manually 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: 8.6kg.
2. Structure and working principle
2.1 CTB operating mechanism (manual type)’s
structure is as Pic1
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