VSM-12/Permanent magnet mechanism vacuum circuit breaker
Permanent magnet circuit breaker – VSM-12
The permanent magnet operating mechanism and the vacuum interrupter of the HX03-12/M vacuum circuit breaker adopt front and rear arrangement,. The main conductive circuit is a floor-standing structure. The upper and lower outlet seats and the vacuum interrupter are installed in a tubular insulating cylinder. Inside. The insulating cylinder is made of epoxy resin by APG process.This structure can prevent dust accumulation on the surface of the vacuum arcing chamber and prevent it from being damaged by external factors. It can ensure that the product still has good insulation performance in the humid and hot environment and serious pollution.
Permanent magnet vacuum circuit breaker for indoor installation, air insulation, used to open and close various of different type of power load,Applicable to the construction and renovation of power grids such as urban nets, rural nets, mines and railways, especially the products absorb advanced technology and technology at home and abroad, with intelligent, high reliability, long life, maintenance-free and other characteristics. No pollution to the surrounding environment when used and it’s a green product.
Table 1. Technical parameters
No Item Unit Specification 1 Rated Voltage kV 12 2 Rated Current A 630 1000、1250 1600、2000、2500、3150 3 Rated short circuit breaking current kA 20 25 20 25 31.5 31.5 40 4 Rated peak withstand current kA 50 63 50 63 80 80 100 5 Rated short-time withstand current kA 20 25 20 25 31.5 31.5 40 6 Rated short circuit closing current kA 25 63 25 63 80 80 100 7 Breaking times of short circuit current times 50 30 8 Rated operating sequence O-0.3s-CO-180s-CO，O-180s-CO-180s-CO（40kA） 9 Mechanical life times 30000(small current) 20000(heavy current) 10 Breaking times of rated current times 30000(small current) 20000(heavy current) 11 Rated lightning impulse withstand voltage (full wave) kV 75 12 Rated short-time power frequency withstand voltage kV/min 42
Table 2.Parameters of circuit breakers with capacitors
No Item Unit Specification 1 Travel of the contact mm 11±1 2 Over-travel of the contact mm 3.5±0.5 3 Closing speed m/s 0.6±0.2 4 Opening speed m/s 1.1±0.3 5 Contact closing bounce time ms ≤2，≤3(40kA) 6 Three-phase contact closing and opening synchronization ms ≤2 7 Closing time ms ≤22 8 Opening time ms ≤20 9 Energy storage loop supply voltage V ∽110、∽220 10 Energy storage loop current A ≤0.5（Before the capacitor is full），≤0.01（After the capacitor is full） 11 Energy storage time s ≤10，First charge time≥30 12 Closing control voltage V ∽110、∽220 13 Opening control voltage V ∽110、∽220 14 Closing control current A 0.2 15 Opening control current A 0.2 16 Main loop resistance μΩ ≤60(630A)，≤45(1250A)，≤30(2000A above) 17 Phase distance mm 210，275(40kA)
Table 3.Parameters of circuit breakers with capacitors
No Item Unit Specification 1 Travel of the contact mm 11±1 2 Over-travel of the contact mm 3.5±0.5 3 Closing speed m/s 0.6±0.2 4 Opening speed m/s 1.1±0.3 5 Contact closing bounce time ms ≤2，≤3(40kA) 6 Three-phase contact closing and opening synchronization ms ≤2 7 Closing time ms ≤75 8 Opening time ms ≤65 9 Energy storage loop supply voltage V DC220～DC240V（From DC screen） 10 Energy storage circuit closing current A 35＜I＜55（Small current） 11 Energy storage circuit opening current A 10＜I＜20 12 Energy storage circuit closing time ms ≤60 13 Energy storage circuit opening time ms ≤25 14 Closing control voltage V ∽110、∽220 15 Opening control voltage V ∽110、∽220 16 Closing control current A 0.2 17 Opening control current A 0.2 18 Main loop resistance μΩ ≤60(630A)，≤45(1250A)，≤30(2000A the above) 19 Phase distance mm 210，275(40kA)
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