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  • Buck start autotransformer

    Product description: Power supply brand Shanghai Yinxi model QZB Frequency characteristics Low-frequency power supply phase number Three-phase iron core shape EI cooling form Dry core form Core winding form Three windings Moisture proof method Open cooling method Air-cooled external structure Vertical voltage More than 60% 80% 100% Special customizable efficiency (η) 90% Rated power 155KW Waveform without additional waveform distortion QZB series starting autotransformer Scope of application: QZB series autotransformer (hereinafter referred to as transformer) is suitable for AC 50HZ, Three-phase squirrel-cage induction motors with a rated voltage of 380V and a rated output capacity of less than 400KW are used for step-down starting under infrequent operating conditions. Using the characteristics of transformer step-down, the step-down current of the motor is reduced to improve the power transmission when the motor starts. Impact of the network. The transformer conforms to GB14048.4 and related standards. The structural characteristics of the QZB series starting autotransformer: 1. The rated operating voltage of the autotransformer is 380V (440V, 460V, 660V can be customized), and the wiring is 100%. 2. This series transformer has 65% and 80% two sets of starting voltage taps. If a small starting torque is required, 65% taps can be used. At this time, the starting current is small and the impact on the power grid is small. 80 can be used for larger moments. % Tap; This transformer can be assembled in XJ01, XJ03, JJ1 series auto-coupling decompression starter box as the main accessory. 3. Starting time: For all working system levels, the starting time of the autotransformer should not exceed 15S (special can be customized). For the working system level, the autotransformer should allow the autotransformer to cool to the ambient air temperature before starting again in rapid succession. The autotransformer is only used for long time intermittent start. Suitable for use under frequent operating conditions, the autotransformer is a single-turn transformer. The primary and secondary sides share the same winding, and its transformation ratio is fixed. Compared with general transformers of the same capacity, it has the advantages of simple structure, low material consumption, and small size. It is particularly economical when the transformer ratio is close to 1. Therefore, it is used more in high-power transmission transformers with similar voltages. In addition, it is widely used in step-down starters of asynchronous motors with a power of 10kW or more. Working conditions of QZB series starting autotransformer: altitude does not exceed 2500m; ambient air temperature; 1. ** air temperature at different altitudes. 2. ** Air temperature:-40 ° C relative humidity: * The monthly average of the wet month ** the relative humidity is 90%, meanwhile, the monthly average ** temperature of the month is 25 ° C, taking into account that the temperature changes occur in the product Condensation on the surface. No significant shaking or shock. There is no explosion hazard in the medium, and the medium is not enough to corrode metal and destroy insulating gas and dust (including conductive dust). Where there is no rain or snow. Model control motor power (kw) ** working current (A) installation size (hole M8) MM volume (length width width height) CMQZB-14142810.5 * 2229 * 16 * 23.5QZB-17173410.5 * 2229 * 16 * 23.4QZB-22224410.5 * 2229 * 16 * 23.5QZB-30306011 * 2233 * 17 * 27QZB-40407711 * 2833 * 17 * 27QZB-45458012 * 2836 * 17 * 28.2QZB-555511012 * 2836 * 17 * 28.5QZB-757514212.5 * 2838 * 18 * 30QZB-909018016.5 * 3141 * 21 * 32QZB-10010019016.5 * 3141 * 21 * 32QZB-11511521816.5 * 3141 * 21 * 32QZB-13513525616.8 * 3141 * 22 * 34QZB-15515529416.8 * 3141 * 22 * 34QZB-19019035014 * 3145 * 24 * 36.5QZB-22522541015 * 3152 * 24 * 38.5QZB-26026048016 * 3156 * 28 * 43.5QZB-31531553016 * 3158 * 28 * 46.5 Technical parameters: the above product size, current size, outline size are for reference only.

    QZB Model: QZB
    155KW(可定制) Power: 155KW (can be customized)
    380V/65%80%(可定制各种电压) Voltage: 380V / 65% 80% (various voltages can be customized)
    铜线(质保三年) Material: Copper wire (three-year warranty)
    See more >>
  • Buck start autotransformer

    Product description: Power supply brand Shanghai Yinxi model QZB Frequency characteristics Low-frequency power supply phase number Three-phase iron core shape EI cooling form Dry core form Core winding form Three windings Moisture proof method Open cooling method Air-cooled external structure Vertical voltage More than 60% 80% 100% special customizable efficiency (η) 90% rated power 75KW waveform without additional waveform distortion Three-phase squirrel-cage induction motors with a rated voltage of 380V and a rated output capacity of less than 400KW are used for step-down starting under infrequent operating conditions. Using the characteristics of transformer step-down, the step-down current of the motor is reduced to improve the power transmission during motor starting Impact of the network. The transformer conforms to GB14048.4 and related standards. The structural characteristics of the QZB series starting autotransformer: 1. The rated operating voltage of the autotransformer is 380V (440V, 460V, 660V can be customized), and the wiring is 100%. 2. This series transformer has 65% and 80% two sets of starting voltage taps. If a small starting torque is required, 65% taps can be used. At this time, the starting current is small and the impact on the power grid is small. 80 can be used for larger moments. % Tap; This transformer can be assembled in XJ01, XJ03, JJ1 series auto-coupling decompression starter box as the main accessory. 3. Starting time: For all working system levels, the starting time of the autotransformer should not exceed 15S (special can be customized). For the working system level, the autotransformer should allow the autotransformer to cool to the ambient air temperature before starting again in rapid succession. The autotransformer is only used for long time intermittent start. Suitable for use under frequent operating conditions, the autotransformer is a single-turn transformer. The primary and secondary sides share the same winding, and its transformation ratio is fixed. Compared with general transformers of the same capacity, it has the advantages of simple structure, low material consumption, and small size. It is particularly economical when the transformer ratio is close to 1. Therefore, it is used more in high-power transmission transformers with similar voltages. In addition, it is widely used in step-down starters of asynchronous motors with a power of 10kW or more. Working conditions of QZB series starting autotransformer: altitude does not exceed 2500m; ambient air temperature; 1. ** air temperature at different altitudes. 2. ** Air temperature:-40 ° C relative humidity: * The monthly average of the wet month ** the relative humidity is 90%, meanwhile, the monthly average ** temperature of the month is 25 ° C, taking into account that the temperature changes occur in the product Condensation on the surface. No significant shaking or shock. There is no explosion hazard in the medium, and the medium is not enough to corrode metal and destroy insulating gas and dust (including conductive dust). Where there is no rain or snow. Model control motor power (kw) ** working current (A) installation size (hole M8) MM volume (length width width height) CMQZB-14142810.5 * 2229 * 16 * 23.5QZB-17173410.5 * 2229 * 16 * 23.4QZB-22224410.5 * 2229 * 16 * 23.5QZB-30306011 * 2233 * 17 * 27QZB-40407711 * 2833 * 17 * 27QZB-45458012 * 2836 * 17 * 28.2QZB-555511012 * 2836 * 17 * 28.5QZB-757514212.5 * 2838 * 18 * 30QZB-909018016.5 * 3141 * 21 * 32QZB-10010019016.5 * 3141 * 21 * 32QZB-11511521816.5 * 3141 * 21 * 32QZB-13513525616.8 * 3141 * 22 * 34QZB-15515529416.8 * 3141 * 22 * 34QZB-19019035014 * 3145 * 24 * 36.5QZB-22522541015 * 3152 * 24 * 38.5QZB-26026048016 * 3156 * 28 * 43.5QZB-31531553016 * 3158 * 28 * 46.5 Technical parameters: the above product size, current size, outline size are for reference only.

    QZB Model: QZB
    75KW Power: 75KW
    380V/65%80% Voltage: 380V / 65% 80%
    铜线(质保三年) Material: Copper wire (three-year warranty)
    See more >>
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