“Dynamic Braking Resistors” are used in order to ensure fast stopping or decrease the speed of AC and DC electric motors controlled by speed drives (speed control devices).
Due to kinetic energy, an electric motor continues to rotate for a short time even after it has been switched off. As the rotor keeps rotating, the motor starts acting as a generator and feeding the drive. This may not only increase the stopping time of the motor, but also cause a voltage increase on DC drive’s terminal leading to an overvoltage fault and consequently a shut down.
In order to avoid such problems, a breaking resistor of a proper resistance value and rated power should be connected to the DC drive’s terminal.
Aluminium Braking Resistors - BRA
Advantages
- Compact sizing, option to use without a cabinet,
- High protection degree against humidity, dust, solvents and water splash
- Excellent mechanical impact and vibration withstand
- Efficient design to ensure long life time with an internal structure for high heat transmission and external structure facilitating heat transmission
Application Areas
- Elevators
- Escalators
- Cranes (Tower, Gantry, Travelling Cranes)
- Work Platforms, Construction Hoists, etc.
- Mines (in wagons, for mixing, stone crunching, etc.)
- Automation (cable, wire, and some textile factories)
Frame Braking Resistors - BRS, BRE, BRG
Advantages
- Compact and elegant frames with high cooling performance designed for high power loads
- All connector elements are manufactured of non-corrosive materials.
- Special structure resistant
- To ensure protection degree from all direction, the bottom part of the frame is also closed and ventilated
Application Areas
- Cranes (Tower, Gantry, Travelling Cranes)
- Work Platforms, Construction Hoists, etc.
- Mines (in wagons, for mixing, stone crunching, etc.)
- Traction Power
- Marine & Harbors
Aluminium Braking Resistors - BRA
- Maximum Operating Voltage : 1000 V
- Resistance Tolerance @ 20°C : ± 5%
- Protection Class : IP5X (Indoor)
- Insulation : 2 kV, 50 / 60 Hz, 1 min
Frame Braking Resistors - BRS, BRE, BRG
- Maximum Operating Voltage : 1000 V
- Resistance Tolerance @ 20°C : ± 5%
- Protection Class : IP20 (Indoor), IP23 (Outdoor)
- Insulation : 3 kV, 50 / 60 Hz, 1 min
| Type | Size | Download Link | |
| BR - Braking Resistors | 1 MB | Download |
