MV Circuit Breaker Operating Mechanism
This operating mechanism is designed for medium voltage circuit breakers in ring main units (RMU). It utilizes a CTB spring-type mechanism to ensure reliable and efficient operation.
Technical Specifications
Overview
High-Performance Spring Operating Mechanism
The CTB spring operating mechanism is engineered for reliable use in medium voltage vacuum circuit breakers, including the ZW32-12 outdoor models and equivalent systems. Designed to meet the rigorous requirements of IEC62271-100 standards, this mechanism ensures consistent and safe switching operations. It is available in both manual (CTB-S) and motor-driven (CTB-D) configurations to suit diverse operational needs in electrical distribution environments.
Mechanical Performance
Operating Functions
- Manual energy storage
- Motor energy storage
- Manual closing/opening
- Electromagnet closing/opening
- Overcurrent protection
- Compliance Standards
- IEC62271-100
- Mechanism Output Angle
- 40 degree
- Manual Operating Force
- 100 N.m
Electrical Specifications
Electromagnet Operating Range
| Operation | Operating Range (% of Rated) | Non-Operating Range |
|---|---|---|
| Open | 65% - 120% | < 30% |
| Close | 85% - 110% | < 30% |
Electromagnet Technical Specs
24 V
Rated Voltage
1.8 Ω
Coil Resistance at 20°C
- Energy Storage Motor
- Unidirectional permanent DC motor
