Operating Mechanism for MV circuit breaker RMU CTB spring type
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With Lightning impulse testing, power frequency withstand voltage equipped, and Partial discharge testing equipment, same as STL standard laboratory, guarantees Vacuum Circuit Breaker life 18,000 cycle, compare with IEC standard required of 10,000 cycle.
CTB spring operating mechanism will be used in ZW32-12 outdoor medium voltage vacuum circuit breaker, and outdoor or indoor vacuum circuit breaker with equivalent closing power, its performances can meet requirements of IEC62271-100 Medium Voltage Circuit Breaker and the product's Technical Conditions;
CTB-S manual operating mechanism holds functions of manual energy-storage; manual closing/opening; overcurrent protection.
CTB-D motor operating mechanism functions including motor or manual energy-storage; electromagnet or manual closing/opening; overcurrent protection.
Energy storage motor adopt unidirectional permanent DC motor, technical parameter as Table:
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 adopt solenoid electromagnet, technical parameter as Table:
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 | ||||||
Manual energy storage is operated by the handle allocated with the mechanism, the operating force less than 100 (N.m)
Mechanism output angle 40 degree.
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