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| No.11851861
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Information Name: | [ZN28G-12-type vacuum breaker Siamese] |
Published: | 2014-11-26 |
Validity: | 300 |
Specifications: | Standard |
Quantity: | 1000.00 |
Price Description: | |
Detailed Product Description: | ZN28-12 series vacuum circuit breaker is rated voltage 12kV, within the high-voltage indoor switchgear for three-phase AC 50Hz. Products meet GB1984-89 standards, the product structure and operating mechanism of the switch body integrally mounted or separate switch body and operating mechanism installed in two forms. Within ZN28A-12 / 630-20 indoor vacuum circuit breakers ZN28A-12 / 630-25 indoor vacuum circuit breakers ZN28A-12 / 1250-25 indoor vacuum circuit breakers ZN28A-12 / 1250-31.5 indoor vacuum circuit breaker ZN28A- 12 / 1600-31.5 indoor vacuum circuit breakers ZN28A-12 / 2000-31.5 indoor vacuum circuit breakers ZN28A-12 / 2500-40 indoor vacuum circuit breakers ZN28A-12 / 3150-40 indoor vacuum circuit breaker 3. Main Parameter 1 Rated voltage ratings kV 12 2 Rated insulation level 1min power frequency withstand voltage phase to earth 42, 48 fracture lightning impulse withstand voltage (peak) and white, on the ground 75, the fracture frequency 853 Hz 50 4 Rated Rated current A 630 1250 1250,1600,2000 2000,2500,3150 rated short-circuit breaking current of 5 kA 20 31.5 40 6 rated short-circuit current (peak) 50,801,007 rated peak withstand current 50 80 100 8 4S rated short time withstand Current 20 31.5 409 breaking time ms 45≤t≤80 (with CD17) 45≤t≤85 (with CD19) 10 arcing time ≤20 11 Rated operating sequence 0-0.3s-CO-180s-CO 0-180s -CO-180s-CO 12 rated short-circuit breaking current breaking times 302,013 to open and close the capacitor bank current A 400,630 14 contact permission attrition thickness mm 3 15 Mechanical life time 1,000,016 secondary circuit 1min power frequency withstand voltage V 2000 17 contact opening distance / contact overtravel mm 11 ± 1/4 ± 1 18 points off the same period of the three-phase contact ms ≤2 19 Average closing speed m / s 0.6 ± 0.2 20 Average opening speed ( Just contact points 6mm) 1.2 ± 0.3 21 Contact closing bounce time ms ≤2 22 main circuit resistance μΩ 630A≤80, white center distance remaining ≤40 23 mm 230 ± 1.5 1250A 1600A 2500A 275 ± 1.5 230 ± 1.5 230 ± 1.5 Closing time 24 ms 50≤t≤100 (with CD17) 30≤t≤90 (with CT19) 25 opening time 25≤t≤55 (with CD17) 20≤t≤60 (with CD17) Siamese Model within ZN28G-12 / 630-20 indoor vacuum circuit breakers ZN28G-12 / 630-25 indoor vacuum circuit breakers ZN28G-12 / 1250-25 indoor vacuum circuit breakers ZN28G-12 / 1250-31.5 indoor vacuum circuit breaker ZN28G- within ZN28G-12 / 3150-40 indoor vacuum circuit breaker 3. The structure of the vacuum circuit breaker within ZN28G-12 / 2000-31.5 indoor vacuum circuit breakers ZN28G-12 / 2500-40 indoor vacuum circuit breakers and 12 / 1600-31.5 households Works 3.1 Structural features of this product are fixed switchgear special vacuum breaker, with its own actuator (the user can choose according to the actual needs of a spring mechanism or CT-19 CD-17 electromagnetic mechanism), actuator mounted inside the frame, connection with the spindle through the rod, ensure actuator spindle angle is 58 ° ± 1 °, and the mechanical properties of technical parameters should meet the requirements of Table 2. This product is installed in a longitudinal magnetic sealing type vacuum interrupter, spindle, opening spring and oil buffers and other internal components are mounted in a rack, a bottom frame is provided with mounting holes for circuit breaker installation. After loading six insulators frame plane (up and down 3), fixed on the movable support insulator, lower insulator bracket fixed static, dynamic, static and the rear end of the bracket doubles as outlet terminals. Vacuum interrupter installed in moving between static bracket spindle insulating rod, crank arm is connected with the vacuum interrupter, move, is also equipped with two insulated rods still stand, the two together into a whole, improve the overall strength. 3.2 Principle interrupter breakers equipped with vacuum interrupters, with a high vacuum. When the dynamic and static contact actuator in effect charged sub-gate, between the contacts will create a vacuum arc. Meanwhile, due to the special structure of the contacts, generate the appropriate vertical magnetic field in the contact gap, keeping the vacuum arc diffusion, and to maintain a low arc voltage. Natural current zero crossing, the residual ions, electrons and metal vapor within microseconds of time can be a composite or aggregation in the contact surface and the shield, the dielectric strength of the medium interrupter fracture is restored quickly, thereby arc is extinguished, to achieve the purpose of breaking. Since the vacuum circuit breaker control vacuum arc AMF, which has a strong and stable breaking current capability. 5. Conditions 5.1 normal conditions a) ambient air temperature: -10 ℃ ~ + 40 ℃; b) Altitude: not exceed 1000m; c) and humidity conditions: day relative humidity does not exceed 95% of the mean monthly relative humidity average does not exceed 90%, average daily water vapor pressure of not more than 2.2kPa, monthly average water vapor pressure is not more than 1.8kPa; d) ambient air is not significantly influenced by dust, smoke, corrosive and / or flammable gases , steam or fog of pollution; e) external vibration or earth from the switch and control equipment is negligible; amplitude f) induced in the secondary system electromagnetic interference does not exceed 1.6kV. 5.2 Special conditions of use according to the national standard GB / T11022-1999 "high-voltage switchgear and control equipment standards common technical requirements" requirement, the circuit breaker should be run under normal conditions of use. If the user has a working conditions and differences in normal conditions of use, such as: the installation site at an altitude of over 1000m, where the ambient air temperature exceeds normal limits or high humidity conditions specified easy to produce condensation, and the manufacturer should consult and consensus. 5.3 Working with CD17 electromagnetic power circuit breaker mechanism or CT19 spring mechanism, the power parameters and wiring diagram see agency instructions. Ordering options: 1, providing the wiring diagram program number, use and single-line system diagram, rated voltage, rated current, 2, switchgear, control, measurement and protection as well as other requirements for locking and automatic device 3, switchgear used in special environmental conditions , should be described in detail in the order 4, beyond the need for additional accessories or spare parts should be made and the number of species |
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Copyright © GuangDong ICP No. 10089450, Schneider Electric Co., Ltd., Xiamen Glory All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility
You are the 13313 visitor
Copyright © GuangDong ICP No. 10089450, Schneider Electric Co., Ltd., Xiamen Glory All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility