DBU4220B braking unit, commonly used in industrial motor drive systems:
General Overview
- Model: DBU4220B
- Type: Dynamic Braking Unit (Energy Dissipation Type)
- Application: Used to dissipate regenerative energy during motor deceleration to prevent overvoltage on the DC bus
- Voltage Class: DC630V–DC760V ±10%
- Mounting: Vertical installation on a non-flammable, solid surface
Electrical Specifications
| Parameter |
Value |
| Rated Braking Current |
85 A |
| Peak Braking Current |
300 A (max for 20 seconds) |
| Minimum Braking Resistance |
3.2 |
| Chopper Voltage Range |
DC630–760 V ±10% |
| Response Time |
1 ms |
| Protection Features |
Overheat, overcurrent, short circuit |
| Cooling |
Internal fan |
| Noise Filtering |
Built-in |
| Protection Class |
IP20 |
