Dc Digital Drives
NBH offers large range of DC Digital drive Panels ranging from 1HP to 5000HP for various applications fully interfaced with PLC, PC & HMI. NBH provide DC drives with 0.01% of accuracy with feedback system & with inbuilt scada system which can be interfaced with PC for accessing various NBH Drive data status, Load parameters, Line permissive.
We have more than hundreds of drives installed & are running satisfactorily in India & abroad.
A few of the salient feature of our DC Digital Drive Panel includes:
- Single Quadrant and Four Quadrant Drive options
- Full control three phase interchangeable Thyristor bridges
- Drive status indications
- Input AC supply variations upto 15% permitted
- Maximum operating temperature 60 Degree Celcius
- Speed Control Range 1:100 with tacho feedback
- Steady State Accuracy with Encoder, Tacho and Arm Volt Feedback option
- Overload Capacity 150% rated output current for 25 seconds
- 36 Digital & input I/O combination
- Unique Inbuilt shaft position controller
- Intelligent Overload Protection
- Large 40Character alphanumeric display
- Ultra Compact size Less Panel space
- Inbuilt Surge Voltage Suppression
- Inbuilt Single Phasing Protection.
- Adjustable Current Limit 0-200%.
PROTECTION FEATURES OF NBH DC DRIVE :
- Instantaneous over current
- Field failure protection in DC Drive card
- Field Over current,
- Motor over-temperature,
- Thyristor stack Over-temperature,
- Mains supply phase loss,
- Mains synchronisation loss,
- Armature over voltage in DC Drive feedback card
- Thyristor Trigger failure option in DC Drive
- Over speed,
- Tacho and/or encoder failure with auto change-over to arm voltage feedback
- All analog and digital outputs are short circuit protected