Operating Mechanism for MV circuit breaker RMU CTB spring type
Inquire NowDescription
The CTB Spring Operating Mechanism is an advanced solution designed for medium voltage vacuum circuit breakers, specifically the ZW32-12 model, both for outdoor and indoor applications. This mechanism guarantees a lifespan of 18,000 cycles, exceeding the IEC standard requirement of 10,000 cycles, thanks to rigorous testing including lightning impulse, power frequency withstand voltage, and partial discharge testing. The CTB-S model features manual energy storage and manual closing/opening along with overcurrent protection, while the CTB-D model incorporates motor and manual energy storage, electromagnet closing/opening, and also offers overcurrent protection. With its robust design and superior functionality, the CTB Spring Operating Mechanism meets and exceeds the IEC62271-100 standards for medium voltage circuit breakers.
Specifications
| Item | ZYJ220-53-216 | ZYJ110-53-216 | ZYJ48-53-216 | ZYJ24-53-216 |
|---|---|---|---|---|
| Rated operate voltage (V) | DC220 | DC110 | DC48 | DC24 |
| Rated power (W) | 40 | 40 | 40 | 40 |
| Normal operating voltage range | 85%-110% | 85%-110% | 85%-110% | 85%-110% |
| Rated operating current (A) | 0.5 | 1.0 | 1.8 | 4.6 |
| Motor energy storage time (S) | ≤8 | ≤8 | ≤8 | ≤8 |
Closing/Opening Electromagnet Technical Parameters:
| Rated operate voltage (V) | AC220 | AC110 | DC200 | DC110 | DC48 | DC24 |
|---|---|---|---|---|---|---|
| Rated operating current (A) | 1.36 | 3.6 | 2 | 5.3 | 10 | 20 |
| Rated power (W) | <300 | <396 | <440 | <583 | <480 | <480 |
| Coil resistance at 20°C (Ω) | 54 | 10.3 | 106 | 20.5 | 4.8 | 1.2 |
| Normal operating voltage range | Open at 65%~120% rated operate voltage; do not open when less than 30% rated operate voltage | |||||
| Close at 85%~110% rated operate voltage; do not close when less than 30% rated operate voltage | ||||||
Additional Information
Manual Energy Storage: Operated by a handle with an operational force of less than 100 N.m. The mechanism output angle is 40 degrees.
