Product Description：
CTH1.CTH1A.CTH1B-type spring operating mechanism is operating 72.5KV vacuum and 40.5,12 KV vacuum, sulfur hexafluoride and other types of circuit breakers large closing mechanism of small size. When needed, can be easily adjusted small closing closing power.
CTH1, CTH1A, CTH1B three institutions have the closing power of 520J, 720J, 850J three specifications. The three agencies have the same technical data.
Institutions meet the GB / T1984 and GB / T11022 standards
CTH1A and CTH1B-type institutions in the CTH1-based institutions to improve the design made to meet the needs of different installation and connection. CTH1 and CTH1A layout mirror symmetry. CTH1, CTH1A are rear mounted to accommodate different link requirements with circuit breakers.
The agency has the following features:
A) Compact structure. Mechanism of joint power of small size;
B) high mechanical strength, safety factor, the agency long life;
C) energy storage gear, high efficiency, smooth transmission, low noise;
D) Closing with compression spring, large amount of pre-compression, closing the output output torque of the last paragraph large, easily with the circuit breaker, especially the vacuum circuit breaker of the reaction characteristics to achieve a good match;
E) closing spring force and closing power can be adjusted in a wide range, with the circuit breaker with easy to adjust to achieve a satisfactory closing, opening speed;
F) together, opening tripping power and tripping current is small;
G) together, the majority of sub-gate buckle buckle size and other fixed value switch to a fixed value, little adjustment, an increase of operational reliability;
H) there is closing the remaining energy storage device, each energy storage less energy storage time is shorter.
Use of environmental conditions:
A) Ambient air temperature: -25 ℃ ~ 40 ℃
B) Altitude: 2000M
C) relative humidity; average daily value (24H) of not more than 95%, the monthly average of not more than 90%; water vapor pressure: day (24H) average not more than 2.2KPa, the monthly average of not more than 1.8Kpa;
D) The ambient air is not significantly contaminated with dust, smoke, corrosive and / or potent gases or salt fog.
| Main technical parameter sheet for CTH1,CTH1A and CTH1B type mechanism | |||||||
| Number | Item | units | Technical parameters | Remark | |||
| 1 | Closing power | Rated value | J | 520 | 720 | 850 | |
| Adjustable range | J | 315-521 | 475-728 | 517-854 | |||
| 2 | Corner of output turn arm | 500 ± 2.50 | |||||
| 3 | Energy storage motor | Rated voltage | V | DC/AC220,DC/AC 110 | Suitable for DC or AC of moto | ||
| Rated current | A | 1.6,3.2 | |||||
| Operating voltage range | 85%-110% (Rated voltage) | ||||||
| 4 | Tripping electromagnet for closing and breaking | Rated voltage | V | DC/AC220,DC/AC 110 | For 30% rated breaking voltage, breaking shall not be allowed. | ||
| Closing current | A | 1.6,3.0 | |||||
| Breaking current | A | 1.6,3.0 | |||||
| Operating voltage range for closing | 80%-110% (Rated voltage) | ||||||
| Operating voltage range for breaking | 65%-120% (Rated voltage) | ||||||
| 5 | Auxiliary switch | Normally-opened, normally-closed contact number | Normally-opened 6, normally-closed 6 | ||||
| Rated breaking and closing current | A | AC10A,DC220V(t=20ms) 3A | |||||
| 6 | Connection terminal row | Terminal number | 30 | ||||
| Rated current | A | 10 | |||||
| 7 | No-current interval time for one time of closing | S | 0.3 | ||||
| 8 | The energy storage time for rated motor voltage | S | =10 | ||||
| 9 | Mechanical life, time | ?10000 | |||||
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