Motor Starting Autotransformer
Product Overview & Application
Motor starting autotransformers are a special transformers used in the autotransformer starting of a industrial motors. Autotransformer starting of motors is used widely in starting large industrial motors due to its advantage of providing the highest starting torque with lowest starting line current compared to other reduced voltage starting methods. The reduced voltage taps of the motor starting autotransformer are used to reduce the starting current of the transformer. Contactors switch between the taps, incrementally, increasing the votatge applied to motor as it gets up to speed, while ensuring the starting current is limited. Once the motor reached rated speed, the autotransformer is removed from the circuit entirely, avoiding any unnecessary energization losses..
Features & Benefits
- Limits the inrush current of the motor significantly.
- Generates minimal losses durring starting.
- Suitable for long starting periods
- Starting voltages can be easily adjusted using the transformer taps.
- CSA certified: File No. LR 34493.
- UL listed: File No. E108255.
Product Specification
Capacity | 10 to 500HP |
Voltage Class | 1.2kV |
Taps | 0%, 50%, 65%, 80% & 100% |
Cooling | Self Cooled (ANN / AN) |
Frequency | 60Hz (50/60Hz Optional) |
Conductors | Copper (Cu) Windings |
Insulation System | 220°C (150°C Rise) (Optional 115°C or 80°C Rise Available) |
Impregnation | Polyseter Resin Dipped and Baked |
Sound Level | Meets NEMA ST-20 |
Enclosure Type | Open Core & Coil |
Warranty | 12 Months (See Warranty and Limitations) |
Quality System | ISO 9001:2015 Quality Management System |
Certifications |
|
Reference Standards |
|
Optional Features & Accessories |
|