CTB Vacuum Circuit Breaker Operating Mechanism

Description

The CTB vacuum circuit breaker operating mechanism is aquality machinery that could be matched with the ZW32-12/24 outdoor highvoltage vacuum circuit breaker and other similar outdoor or indoor vacuumelectrical switchgear.It can meet the authoritative standard of GB1984 AC High Voltage Circuit Breaker. The standardfunctional configuration of the manual operatingmechanism (CTB-S) consists of the manual charging, manualopening/closing of the breaker,   andover-current protection (optional). Standardfunctional configuration of motor-operated mechanism (CTB-D) includes manualcharging, motor-operated charging, manual or motor-operated opening/closing,and over-current protection (optional).

Ambient Condition ofthe CTB vacuum circuit breaker operating mechanism

1. Surrounding air temperature: -45°C  to 40°C;

2. Altitude: under 2000m;  windspeed: under 35m/s;

3. Relative humidity: under 95%(daily average), 90%(month average);
   Vapor pressure: under 2.2Kpa (dailyaverage), 1.8Kpa(month average);

4. No frequent serious vibration, water vapor, gas, chemical corrosive deposit,salt mist, dust, fire nor explosive materials which substantially undermine themechanism’s performance.

Weight of the CTB Vacuum Circuit BreakerOperating Mechanism

CTB-S: 8.6kg; CTB-D:12kg.

Structure and Working Principles

Structure ofCTB-S
image001.jpg

1. mounting posts;            2. pinion;                      3. storageshaft;
4. main gear;                     5. closingaxle;             6. outputcrank arm;
7. supporting column;      8. tripping pawl;            9. tripping axle;
10. over-current coil;       11. energystorage crank arm;   
12. energy storage spring;                                     13. cam;
14. main axis;                   15. wheelgear;            16. clutchplate;

Structure of CTB-D
image002.jpg

1.mounting posts;                2. motor;                      3. mainaxis;
4. energy storage axis;         5. pinion;                      6. energystorage crank arm;
7. output crank arm;            8. wheelgear;               9. trippingpawl;   
10. tripping axle;                 11. trippingcoil;         12. over-current coil;
13. tripping spring;              14. closingspring;       15.closing pawl;
16. cam;                              17. supporting column;
18. wheel gear;                   19. closingcoil.