VPT solid seal vacuum circuit breaker
VPT circuit breaker is a new generation of solid seal vacuum circuit breaker
VPT circuit breaker specification series is complete, electrical parameters up to 4000A, 40kAVPT circuit breaker is E2 class circuit breaker (circuit breaker with extended electrical life)
VPT circuit breakers are class M2 circuit breakers (circuit breakers with extended mechanical life)
VPT circuit breaker is C2 class circuit breaker (circuit breaker with very low probability of heavy breakdown)
VPT circuit breaker is equipped with advanced solid seal special vacuum interrupter. VPT circuit breaker is full working condition circuit breaker. Solid insulation technology is adopted to avoid the influence of harsh environment on the insulation outside the primary circuit of vacuum circuit breaker and realize the complete maintenance-free primary conductive circuit.
VPT circuit breaker adopts modular elastic operating mechanism, which is streamlined and highly reliable.
VPT circuit breakers fully meet the standards of GB, DL, IEC, DIN, VDE and other advanced industrialized countries
VPT circuit breaker has two types of installation methods: fixed type and handcart type, which can realize reliable five-prevention interlocking. It can be installed in various types of fixed switch cabinets and can also be equipped with various types of handcart switch cabinets that can be removed.
- Product Description
- Technical features
- Main technical parameters
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- Commodity name: VPT solid seal vacuum circuit breaker
VPT circuit breaker is a new generation of solid seal vacuum circuit breaker
VPT circuit breaker specification series is complete, electrical parameters up to 4000A, 40kAVPT circuit breaker is E2 class circuit breaker (circuit breaker with extended electrical life)
VPT circuit breakers are class M2 circuit breakers (circuit breakers with extended mechanical life)
VPT circuit breaker is C2 class circuit breaker (circuit breaker with very low probability of heavy breakdown)
VPT circuit breaker is equipped with advanced solid seal special vacuum interrupter. VPT circuit breaker is full working condition circuit breaker. Solid insulation technology is adopted to avoid the influence of harsh environment on the insulation outside the primary circuit of vacuum circuit breaker and realize the complete maintenance-free primary conductive circuit.
VPT circuit breaker adopts modular elastic operating mechanism, which is streamlined and highly reliable.
VPT circuit breakers fully meet the standards of GB, DL, IEC, DIN, VDE and other advanced industrialized countries
VPT circuit breaker has two types of installation methods: fixed type and handcart type, which can realize reliable five-prevention interlocking. It can be installed in various types of fixed switch cabinets and can also be equipped with various types of handcart switch cabinets that can be removed.
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Streamlined and reliable operating mechanism
- The operating mechanism of VPT vacuum circuit breaker is simple, reliable, and the parts of different specifications are versatile.
- The closing unit has simple structure and reliable operation principle, which not only fundamentally eliminates the occurrence of failures such as failure to maintain and refuse to divide after closing, but also reduces the tripping power required for opening.
- The high-performance opening buffer can reduce the overshoot or rebound amplitude of the moving contact when the circuit breaker is opened, reduce the probability of arc reburning when the circuit breaker is opened, and ensure the mechanical life of the bellows of the vacuum arc extinguishing chamber.
- The key parts are made of stainless steel, and the surface is treated with nickel-plated phosphorus alloy, which greatly improves the anti-corrosion ability of the parts, ensures the consistent and stable quality of the machine, and meets the requirements of various dirty environments
- Perfect and reliable mechanical interlocking can meet the requirements of users in various occasions and ensure the safety of operators and equipment
The solid-sealed pole has excellent electrical properties.
The main circuit of VPT vacuum circuit breaker adopts the structure of solid-sealed pole, and the miniaturized vacuum interrupter and other parts of the main circuit are directly sealed in epoxy resin through advanced APG technology, which not only simplifies the assembly process of pole, improves the reliability of the conductive circuit of the vacuum interrupter, but also makes the outer surface of the vacuum interrupter not affected by external mechanical force and external environment.
Miniaturized solid seal special vacuum interrupter
The special vacuum arc extinguishing chamber for solid sealing adopts cup-shaped longitudinal magnetic field contact. During the fox burning process of the contact, the current flows into the coil part of the contact seat from the conductive rod and then flows into the contact. The current flowing through the coil generates a certain degree of longitudinal magnetic field in the contact gap. The longitudinal magnetic field makes the contact with the same diameter maintain the arc as a diffused type when breaking a large short-circuit current, thus greatly improving the breaking capacity of the contact.
Secondary control circuit board
VPT type vacuum circuit breaker adopts modular secondary control circuit board, and the electrical connection with the mechanism is through the plug connector with self-fastening, which is not only convenient to replace, but also ensures the reliability of electrical connection.Meet the requirements of various types of switch cabinet
VPT type vacuum circuit breaker has two installation modes: handcart type and fixed type. Handcart-type VPT vacuum circuit breaker can be equipped with intermediate cabinets with cabinet widths of 650mm, 800mm and 1000mm, and can fully meet the requirements of five prevention functions. Fixed VPT type vacuum circuit breaker can be equipped with a variety of models of fixed cabinet.
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Serial Number Project Unit Data Ol reel voltage kV 12 02 Rated power frequency withstand voltage (Imin) 42 (1) Rated lightning impulse withstand voltage (port) 75 (1) 03 Rated frequency Hz 50 04 Rated current A 630
1250
630
1250
630
1250
1600
2000
2500
3150
1250
1600
2000
2500
3150
4000 (2)
05 Rated short-circuit breaking current kA 20 25 31.5 40 06 Rated short-time withstand current 20 25 31.5 40 07 Rated short-circuit closing current (peak) 50 63 80 100 08 Rated peak withstand current 50 63 80 100 09 Rated out-of-phase grounding fault breaking current 17.3 21.7 27.4 34.6 10 Rated short circuit duration (main circuit) S 4 11 Rated operating sequence O-0.3s-CO-180s-CO (<31.5kA) 0-I80s-C0-I80s-C0 (40kA) 12 Mechanical life Times 30000( 1600-31.5 and below) '" 20000( 40kA) 13 DC component percentage 40% 14 Rated breaking current of single capacitor bank A 630,4) 15 Rated back-to-back capacitor bank breaking current A 400'4’
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