Vacuum circuit breaker ZW7-40.5 / 1600 outdoor vacuum circuit breaker ZW7-35

Scope ZW7-40.5 outdoor high voltage AC vacuum circuit breakers, a safe and reliable performance, easy maintenance, long maintenance cycle and so on. As a result filled with new insulation material, to the outside of the arc chamber and the inner wall of porcelain without condensation. Transformer is placed inside of the overall structure of institutions to facilitate the installation. But also to avoid the other switch oil, gas leaks and toxicity issues. Since moving to the circuit breaker, the static contact seal in the vacuum interrupter by vacuum as an insulating and arc extinguishing medium, medium, and thus have the advantage of a variety of other types of switches can not match. So the product is substituted DW oil circuit breaker ideal product. Operating mechanism box of the product in the middle of the structure type circuit breaker is in the home-voltage vacuum circuit breaker, the type of circuit breaker Overall length dimension less than in the original breaker 260mm, suitable for smaller spatial location where the installation. This product is suitable for 40.5kV, 50Hz three-phase power distribution system, as a sub, load current, overload current and short circuit current purposes. Model and its meaning use of environmental conditions 1, ambient temperature limit + 40 ℃, lower limit of -30 ℃ (- like regions), - 40 ℃ (alpine region); 2, Altitude: less than 1000mm; 3, pressure: not more than 700Pa (equivalent to wind speed 34m / s); 4, the degree of air pollution shift: III poles; the main technical parameters in Table 1 Item Unit Data 1 Rated voltage kV 40.5 2 Rated insulation level 1min power frequency withstand voltage (rms) kV 95 dry test wet test kV 80 Lightning impulse withstand voltage (peak) kV 18s 3 Rated current A 1250/1600/2000 4 rated short-circuit breaking current kA 20/25 / 31.5 5 Rated operating sequence stars -0.3s- combined points -180s- combined points 6 rated capacitor bank breaking current A 400 7 rated short-circuit breaking current breaking times 208 rated short-circuit current (peak) kA 50/63/80 9 Rated peak withstand current kA 50/63/80 10 rated short time withstand current kA 20/25 / 31.5 11 Rated short circuit duration kA 4 12 full-off time S ≤0.08 13 Mechanical life 1,000,014 times the rated operating voltage and auxiliary circuit Rated voltage V AC, DC 220,110