An automatic circuit recloser is a circuit breaker. It is equipped with a mechanism that can automatically close the breaker after it has been opened due to a fault. They are used to protect overhead line power distribution circuits. These circuits are prone to transitory faults such as nearby lightning strikes, wind-borne debris, squirrels climbing insulators, and the like. For a conventional circuit breaker or fuse, a transient fault would open the breaker or blow the fuse, which will disables the line until a technician could manually reclose the circuit breaker or replace the blown fuse. However, an automatic circuit recloser will make several pre-programmed attempts to re-energize the line. If the transient fault has cleared, the automatic circuit recloser's circuit breaker will remain closed and normal operation of the power line will resume. If the fault is some sort of a permanent fault, such as downed wires or tree branches lying on the wires, the automatic circuit recloser will exhaust its pre-programmed attempts to re-energize the line and remain tripped off until manually commanded to try again. Automatic circuit reclosers are made in single-phase and three-phase versions, and use oil or vacuum interrupters.
CHZ7-12/24 CHZ7-12/17.5/24 Outdoor AC Medium Voltage Auto-recloser
This outdoor automatic MV AC recloser is comprised of a vacuum circuit breaker ZW20A and a recloser CH30 in 12/24kV, 50/60HZ power system. It is manufactured in accordance with the standards of JB7570 high voltage AC auto-recloser, IEC694, IEEEC37.63 & GB/T 11022 HV general technical requirement of switch and control apparatus. This outdoor recloser is applicable for substations, industry and mining, urban and rural electricity power networks. It is especially suitable for occasions with frequent operation and automatic power distribution network.
Technical Parameters
| About switch | Concern to ZW20A |
| Rated voltage | 12/24 kV |
| 1min. P.F. withstand voltage (dry) | 42/48/60 kV |
| Lightning impulse withstand (peak) | 75/125 kV |
| Rated current | 630/1000 A |
| Rated power frequency | 50/60HZ |
| Rated short-circuit breaking current | 16,20,25 kA |
| Rated short-circuit breaking current | 40.50.63 kA |
| About Controller | |
| Input CT ratio | 5A or 1A (optional) |
| Rated voltage and power frequency | AC 220V/50HZ or AC 100V/50HZ |
| C/O operating power supply | DC 24V or AC 220V |
| Output capacity | more than 600W |
| Over-current fixed value | 20-300% adjust continuous |
| Quite-breaking fixed value | 20-100% adjust continuous |
| Reclosing time | 0.1-600s adjust continuous |
| Delay time | 0.1-600 adjust continuous |
| Zero-sequence current | 10-100% adjust continuous |
| Local control distance | more than 30m |
| Remote control distance | more than 1200m |
Thank you for visiting our website! Huayi Electric Co., Ltd. is a professional outdoor recloser manufacturer in China. We can also produce wind turbine generators, load break switches, disconnect switches and other products in a large quantity. With more than 20 years of experience in manufacturing wind turbine generators and power transmission equipment, our products have been certified by KEMA, GOST, CCC, TUV, WTGS and CB. By now, we have exported our products to more than 30 countries and regions, such as America, Germany, Russian, Iran, South Africa and Argentina. If you are looking for outdoor reclosers, we welcome you to contact us! We look forward to working with you!
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