NBH offers Analog DC Drives with Microprocessor based system upto 300HP,with inbuilt protections against various abnomlities like:-overcurrent,field failure,motor over temperature,overload,unbalancing b/w Refences & motor speed,Wrong Sequence of three phase line phases displayed on LCD based Fault Annuncation system.Our drive technology result in increased production flexibility while reducing life costs.
NBH DC Analogue Drives also known as Variable speed DC drives or Thyristor Drives, we offer our large range of DC drives ranging from 1HP to 5000HP. We have more than 2,500 drives installed & are running satisfactorily in India & abroad.
A few of the salient feature of our Drive include :
Full control three phase interchangeable thyristor bridges
Drive status indications
Selection of Armature/Tachogenerator feedback available on card
Protections - EOC, FLR, Overload, over speed, over temperature, Di / Dt etc
Input AC supply variations upto ± 15% permitted
Drive immune to input supply phase sequence
Surge Voltage Suppression.
Snubber Circuits across each power device provided
Single Phasing Protection
Adjustable Current Limit 0-150%
Gradual Acceleration of motor with adjustable ramp time of 2 to 30 seconds
Front Accessible Test Points at various stages
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