Welcome to Shop Elect, Biggest Marketplace for Industrial Electrical & Engineering.

Auto-Transformer

Auto-Transformer

Auto Transformer starter panels upto 800 hp
Advantages

Good starting torque and current performance
Possibility of adjusting starting parameters
No break in supply to the motor during starting
Best suited for cases when either maximum reduction of Inrush current is desired or motor requires longer acceleration time with good starting torque,such as:

  • Blowers
  • Pumps
  • Compressors
  • Extruders
  • Crushers
Range & Specification
  • Available upto 800hp
  • Standard tappings : 50% , 65% and 80%
  • Air Cooled design
  • 7 Tank pre treated bolted construction enclosure
  • Superior gasket
Protections Against
  • Short circuit
  • Overload and single phasing (Through Overload relay)
  • Under voltage
  • Other protections available on request
Metering and indication
  • Voltmeter with selector switch
  • Ammeter with selector switch
  • R,Y, B phase indication
  • Motor ON, OFF and trip indication
BCH advantage over conventional oil cooled design
CONVENTIONAL OIL COOLED BCH AIR COOLED
AT is provided as a separate unit Panel size is compact as AT is a part of the panel
Additional wiring between AT and panel Less wiring
Oil needs to be filled, which adds to the cost of the panel No extra cost
Maintenance is costly as oil needs to be regularly monitored for its level , viscosity. When sludge is formed it replacement Practically NO maintenance
Moisture in the oil can burn the transformer so AT cannot be installed in moisture prone areas Suitable for all atmospheric conditions
Less initial cost but high running cost Slightly high Initial cost but very less running cost