Aluminum housing Dynamic Braking Resistors (DBR)
- POWERMAG Aluminium housing dynamic braking resistors (DBR) are based on a high grade FeCrAl Alloy wire wound on threaded ceramic formers
- The resistance material is a high grade FeCrAl Alloy
Rated for repetitive duty
- Robust & Noise Free construction
- High overload capacity
- Close tolerance (+/- 5%)
- Temperature stable element
General Features
- These elements have a high overload capacity and cool rapidly
- Compact construction & Low Noise Level
- Higher continuous dissipation by mounting directly onto heat sink or cooling surface
Specifications
- Terminals: Nickel Copper Plated M.S. Terminals or 300-500mm long Temperature Resistance Cable
- Mounting Positions : Any mounting position is possible at full load, but recommended positions are as follows
- Installation: The resistors do not have a separate safety earth terminal. They must be mounted on a metallic bare, grounded surface or an earth terminal must be affixed to one of the fastening screws
- Safety: For unprotected installation within normal arm’s reach, use a protection against unintended contact
- Sufficient cooling air must be available and sufficient headroom above the unit for the exiting hot air.
| Technical Specifications | |
|---|---|
| Operating Temperature | -55°C to +375°C for 1 min |
| Operating Voltage | 600VAC 1100VDC (850VDC) / 690VAC |
| Insulation Resistance | > 100 MΩ at 500V |
| Dielectric Strength | No breakdown at 2.5 kVAC RMS |
| Short Time Over Load | 2 x Wattage Rating, 10 sec |
| Resistance Tolerance | ± 10% (standard) or ± 5% (optional) |
| Core Material | Ceramic |
| Coating on Core | Silicon Epoxy Resin |
| Terminals | Nickel Copper Plated MS Terminals or Temperature Resistant Teflon Cables |
| Resistor Element | High Grade FeCrAl Alloy |
| Maximum Temperature | 375°C at full load above an ambient temperature of 40°C |
| Housing | Anodized Aluminium |
| Cooling | Air Natural |
| Standards | IEC 60068-1 & IEC 61180-1 / CE Marked |
