Rotary Isolation Vacuum Circuit Breaker for ZRN-27.5 Electrified Railway
ZRN-27.5kV/2 × 27.5kV is a new generation of intelligent, miniaturized, safe, reliable, energy-saving and environmentally friendly single-pole/bipolar rotating isolation vacuum circuit breaker for electrified railways independently developed by Xiecheng Technology Co., Ltd. The product integrates vacuum circuit breaker, isolating switch and intelligent unit. Its main circuit adopts longitudinal arrangement. The product structure is simple and compact, the isolating fracture is visible, and the isolating switch can realize electric operation. It is suitable for electrified railway traction substation, partition kiosk and switching station with rated voltage of 27.7kV and 2 × 27.5kV and rated frequency of 50Hz to receive and distribute electric energy as electric traction power supply system for railway special trunk line.
- Product Description
- Technical features
- Main technical parameters
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- Commodity name: Rotary Isolation Vacuum Circuit Breaker for ZRN-27.5 Electrified Railway
ZRN-27.5kV/2 × 27.5kV is a new generation of intelligent, miniaturized, safe, reliable, energy-saving and environmentally friendly single-pole/bipolar rotating isolation vacuum circuit breaker for electrified railways independently developed by Xiecheng Technology Co., Ltd. The product integrates vacuum circuit breaker, isolating switch and intelligent unit. Its main circuit adopts longitudinal arrangement. The product structure is simple and compact, the isolating fracture is visible, and the isolating switch can realize electric operation. It is suitable for electrified railway traction substation, partition kiosk and switching station with rated voltage of 27.7kV and 2 × 27.5kV and rated frequency of 50Hz to receive and distribute electric energy as electric traction power supply system for railway special trunk line.
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The rotary isolation vacuum circuit breaker for electrified railway is composed of a single-phase single-pole or single-phase double-pole rotatable solid-sealed pole and a fixed 3 integrated elastic operating mechanism, which form a whole through a handcart bracket and a rotating beam. The main circuit of the circuit breaker adopts longitudinal arrangement, which has the characteristics of compact structure, short current-carrying path, few joints and low heat generation. Its unique structural design enables the product to have the functions of handcart, isolating switch and circuit breaker at the same time. The whole circuit breaker can be pushed and pulled out through the handcart bracket, and the function of isolating switch can be realized through the plug and rotating mechanism at both ends of the pole. The integrated elastic operating mechanism can realize the opening and closing operation of the circuit breaker and the isolating switch at the same time, and the isolating switch has the electric operation function.
Integrated bomb operating mechanism, integrated interlocking
The circuit breaker operating mechanism and the isolation rotating mechanism are arranged in an integrated manner, and the mechanical interlocking of the isolation switch, circuit breaker and handcart is integrated through the drive/rotation function conversion vice, which is simple to operate and easy to maintain.
Innovative isolating circuit breaker, safe and reliable
It has both the function of a circuit breaker and the function of an isolating switch. The rotary isolating switch can form two visible isolation breaks without moving the handcart, which is safe and reliable.
Stable performance
Plane layout of the spring mechanism, the machine stiffness is good, consistent operating performance. The main transmission mechanism has mature structure, with tens of thousands of production and operation experience, and the circuit breaker mechanism has stable and reliable performance.
Intelligent environmental protection
Disconnecting switch and circuit breaker can be remote control, telemetry, remote communication, is the key equipment to realize the intelligent distribution network. The intelligent monitoring device is configured to monitor the primary plug-in state of the isolating switch. Interphase circuit breaker and isolating switch are air insulation, green environmental protection and no pollution.
easy maintenance
The rotary isolation vacuum circuit breaker for electrified railway is equipped with a handcart bracket, and the replacement of old and new equipment can be completed only by pulling out the handcart during maintenance, thus saving the replacement time of equipment and improving the operation and maintenance efficiency.
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Main Technical Parameters of Rotating Isolating Vacuum Circuit Breaker for Electrified Railway
Serial Number Project Name Unit Parameter Value 1 Rated voltage kV 27.5 2X27.5 2 Rated frequency Hz 50 3 Rated current A 630、1250、1600>2000、2500 4 Rated insulation level Imin power frequency withstand voltage extremely to the ground kV 95 Interpolar kV / 140 Isolation fracture kV 118 Lightning impulse withstand voltage extremely to the ground kV 200 Interpolar kV / 325 Isolation fracture kV 220 5 Auxiliary circuit Imin power frequency withstand voltage kV 2 6 Rated short-circuit breaking current kA 20、25、31.5 7 Rated short-circuit closing current kA 50、63、80 8 Rated short-time withstand current kA 20、25、31.5 9 Rated peak withstand current kA 50、63、80 10 Rated short-circuit breaking times Times 30(E2) 11 Rated short circuit duration S 4 12 Rated operating sequence Minutes · 0 *** 3s *. Combined. 18OS-Combined 13 Rated cable charging breaking current A 25 14 Rated breaking current of single capacitor bank A 400 15 Capacitive current opening and closing performance Level C2 16 Mechanical life Breaker opening and closing operation Times 10000 (M2) Rotary isolation operation Times 5000 17 Rated power supply voltage of operating mechanism V AC/DC 220 18 Rated supply voltage of auxiliary circuit V AC/DC 220
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