QZB step-down start autotransformer
QZB starting autotransformer is suitable for infrequent step-down starting of three-phase squirrel cage induction motor with AC 50-60Hz, rated voltage 380V and power 14kw-800kw, so as to improve the impact of motor starting on transmission network.
Features
1. Energy saving and low noise: high quality cold rolled silicon steel sheets are used for stacking; The special paint dipping process is adopted to effectively reduce the vibration and noise during operation, making the transformer more energy-saving and quiet. The energy-saving low-noise coil has a ventilation slot, the air flow is smooth, and the coil temperature is effectively reduced.
2. High reliability: reasonable structure, high efficiency, no distortion of waveform, convenient and reliable use, can operate for a long time, can be isolated from the main power grid for power supply, anti impact, anti-interference and anti lightning.
3. Environmental protection characteristics: heat resistance, moisture resistance, stability, chemical compatibility, low temperature and radiation resistance.
4. Versatility: from a single transformer to a multi-functional combined transformer with air cooling, protective shell, transformer and so on.
Product model, outline and installation dimensions
|
型号 Model# |
外形尺寸（mm） Overall dimension |
安装尺寸（mm） Installation dimension |
一次启动时间（S） First start time |
安装孔径（mm） Installation bore dimension |
重量（KG） Weight |
|---|---|---|---|---|---|
| QZB-17KW | 300×140×230 | 250×110 | 8 | 8 | 18 |
| QZB-20KW | 300×140×230 | 250×110 | 8 | 8 | 18 |
| QZB-22KW | 300×140×230 | 250×110 | 8 | 10 | 18 |
| QZB-30KW | 300×150×230 | 225×120 | 8 | 10 | 21 |
| QZB-40KW | 360×165×255 | 280×120 | 12 | 10 | 31 |
| QZB-45KW | 360×165×255 | 280×120 | 12 | 10 | 32 |
| QZB-55KW | 360×175×285 | 280×120 | 12 | 10 | 37 |
| QZB-75KW | 360×185×285 | 280×130 | 12 | 10 | 46 |
| QZB-90KW | 390×195×310 | 310×155 | 15 | 10 | 54 |
| QZB-115KW | 420×205×335 | 310×155 | 15 | 10 | 60 |
| QZB-135KW | 420×230×335 | 310×145 | 15 | 10 | 70 |
| QZB-160KW | 470×240×375 | 310×155 | 18 | 10 | 90 |
| QZB-190KW | 470×260×375 | 310×155 | 18 | 10 | 101 |
| QZB-225KW | 550 ×260×420 | 310×160 | 20 | 12 | 129 |
| QZB-260KW | 580×280×420 | 310×170 | 20 | 12 | 131 |
| QZB-300KW | 600×270×420 | 310×175 | 23 | 12 | 159 |
| QZB-320KW | 600×270×420 | 310×175 | 23 | 12 | 160 |
| QZB-350KW | 600×350×460 | 400×205 | 28 | 16 | |
| QZB-400KW | 230×200×245 | 400×205 | 28 | 16 | |
| QZB-450KW | 230×200×245 | 400×205 | 32 | 16 | |
| QZB-500KW | 750×380×500 | 400×205 | 35 | 16 | |
| QZB-600KW | 75×400×500 | 400×205 | 35 | 16 |
Service conditions
1. The altitude shall not exceed 2500m.
2. Ambient air temperature: maximum air temperature at different altitudes; Minimum air temperature: - 40 ℃.
3. Air relative humidity: the monthly average maximum relative humidity in the wettest month is 90%, and the monthly average minimum temperature in that month is 25 ℃.
4. Places without significant shaking and impact vibration.
5. In the medium without explosion hazard, and there is no gas and dust sufficient to corrode metal and damage insulation.
6. Where there is no rain and snow.
Ordering instructions
1. Basic model, specification, capacity and quantity of transformer;
2. Primary (input) and secondary (output) voltage of transformer;
3. When there are multiple groups of secondary voltages, the capacity distribution of each output voltage shall be provided;
4. The outline and installation dimensions are for reference only. If the required dimensions need to be changed, they must be explained when ordering.
Note: if the user has special requirements, the company can carefully design and manufacture according to the user's needs.
