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This product is used in three-phase AC 50Hz, 35kV-rated power systems for switching load current, overload current, and short-circuit current. It can be fitted with a reclosing controller that identifies current characteristics and performs multiple automatic reclosing operations, powered by a self-contained transformer, and provides voltage and current signal output with controllable functions.
Features:
Powered by an electronic transformer, it can provide three-stage composite protection consisting of overcurrent time delay, inrush-current time delay, and short-circuit instantaneous tripping, achieving intelligent fault identification and rapid clearance, effectively improving the supply reliability and self-healing capability of the distribution line.
Applications:
Suitable for overhead lines in rural grids and urban distribution networks, serving as a pole-mounted breaker undertaking sectional protection and fault isolation, particularly suited to distribution applications with frequent line faults requiring an automatic reclosing function.
| Item | Unit | Technical Specifications | |
| Rated Voltage | kV | 40.5 | |
| Rated Frequency | Hz | 50/60 | |
| Rated Current | A | 630/1250 | |
| Rated Short-Time Withstand Current | kA | 25 | |
| Rated Peak Withstand Current | kA | 50 | |
| Rated Short-Circuit Duration | S | 4 | |
| Rated Number of Short-Circuit Breaking Operations | Times | 30 | |
| Rated Cable Charging Current | A | 25 | |
| Rated Power Frequency Withstand Voltage (1min) | Phase to earth / Phase to phase | kV | 80 |
| Break | kV | 95 | |
| Auxiliary and control circuit | kV | 0.2 | |
| Rated Lightning Impulse Withstand Voltage | Phase to earth / Phase to phase | kV | 185 |
| Break | kV | 185 | |
| Rated Operating Sequence | O-0.3s-CO-180s-CO | ||
| Mechanical Life | Times | Spring: 10000; Permanent magnet: 30000 | |
| Weight | Kg | 150 | |
| Overall Dimensions | mm | 1300 × 600 × 900 | |
Zhejiang Yingchuang Electric Co., Ltd. was established in March 2018 and is a qualified approved supplier for State Grid and China Southern Power Grid. We specialize in the R&D and manufacturing of high-voltage electrical equipment, including primary-and-secondary integrated pole-mounted circuit breakers, indoor/outdoor vacuum circuit breakers, disconnecting switches, ring main units, and complete switchgear assemblies. Guided by "craftsmanship quality and sincere service," we offer full OEM/ODM customization across our entire product range. In 2024, we were recognized as a Provincial Innovative SME and a National High-Tech Enterprise.
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Building 5, No. 88, Zhandong Road, Dianhou Industrial Zone, Liushi Town, Yueqing City, Wenzhou, Zhejiang Province, China
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