CTB(ZW32) type spring operated mechanismDetailed product description：

1.1 Model and Name
CTB type spring operated mechanism, where CTB-S is a manual operated mechanism and CTB-D is an electric operated mechanism.
1.2 Main purpose and working conditions
This institution is capable of operating ZW32-12 outdoor high-voltage vacuum circuit breakers (designed by Beijing Electric Power Research Institute) and other outdoor or indoor vacuum circuit breakers with equivalent closing power. Its performance meets the requirements of GB1984 "AC High Voltage Circuit Breakers" and the "Technical Conditions" of this product; The manual operating mechanism has functions such as manual energy storage, manual opening and closing, and overcurrent protection. The electric operating mechanism has functions such as electric motor or manual energy storage, electromagnetic or manual switching, and overcurrent protection. The controller configured for overcurrent protection has surge, delay, and quick break protection functions.

This product is suitable for the following working conditions:
A. The upper limit of ambient air temperature is+40 ℃ and the lower limit is -45 ℃.
B. Altitude not exceeding 2000m. Wind speed not exceeding 35m/s.
C. The daily average relative humidity should not exceed 95%, and the monthly average should not exceed 90% (+25 ℃).
The daily average water vapor pressure is not greater than 2.2 × 103MPa,
The monthly average is not greater than 1.8 × 103MPa.
D. A place without fire, explosion hazards, serious pollution, corrosion, and severe vibration.

Main Technical Parameters of CTB (ZW32) Spring Operating Mechanism
2.1.1 The energy storage motor adopts a unidirectional permanent magnet DC motor, and its technical data is shown in Table 1:

model	53ZY-CJD01B	53ZY-CJD02B	53ZY-CJD03B	53ZY-CJD04B
Rated working voltage (V)	-220	-110	-48	-24
Rated electrical power (W)	forty
Normal operating voltage range	85%-110%
Rated working current (A)	0.5A	1.0A	1.8A	3.6A
Energy storage time (S)	≤8

2.1.2 The manual energy storage operation adopts the energy storage handle matched with the mechanism for normal operation, with an operating force of less than 100N · m.
2.2 The closing/opening electromagnet adopts a spiral tube electromagnet, and its technical parameters are shown in Table 2:

Rated working voltage (V)	-220	-110	-220	-110	-48	-24
Rated working current (A)	three point four	four point four	one point six nine	three point four	six	eleven point five
Rated electrical power (W)	seven hundred and forty-eight	four hundred and eighty-four	three hundred and seventy-two	three hundred and seventy-four	two hundred and eighty-eight	two hundred and seventy-six
Coil resistance value at 20 ℃ (Ω)	sixty-five	twenty-five	one hundred and thirty	thirty-three	eight	two point one
Normal operating voltage range	65% -120% of the rated working voltage shall be tripped, and no tripping shall be allowed when the rated voltage is less than 30% Closing 85% to 120% of rated operating voltage

2.3 The technical data of overcurrent release is shown in Table 3:

Rated working current 5A	The DC resistance value of the coil is 2.5 Ω at 20 ℃
Normal operating current range	Reliable tripping at 90% -110% rated current, Less than 90% of the rated current shall not trip

2.4 Other
2.4.1 Mechanism output rotation angle 40 °

Structural Installation Diagram


Structural diagram of CTB-S type spring operating mechanism

1. Support rod 2 Small gear 3 Energy storage shaft 4 Big gear 5 Hanging spring arm 6 Output crank arm 7 Zhi Zi 8 Opening switch
9. Opening half shaft 10 Overcurrent release 11 Hanging spring shaft 12 Closing spring 13 Cam 14 Spindle 15 Wheel 16 Clutch plate
17. Support pillar 18 clamp


Structural diagram of CTB-S type spring operating mechanism

1. Support rod 2 Electric motor 3 Small gear 4 Energy storage shaft 5 Big gear 6 Hanging spring arm 7 Output crank arm 8 Zhi Zi
9. Opening switch 10 Opening half shaft 11 Release device 12 Hanging spring shaft 13 Closing spring 14 Closing half shaft 15 Closing switch
16. Spindle 17 Wheel 18 Plywood 19 Closing release 20 Support pillar 21 clamp