Product Short Description
The ABB NBRA-669C is a high-performance, external universal brake chopper engineered for robust regenerative energy management in heavy-duty industrial drive systems. Designed exclusively for 690V three-phase AC inverter environments, it serves as a critical component for controlling DC-link voltage during motor deceleration or overhauling load conditions. This module works in tandem with external braking resistors to safely dissipate excess regenerative energy generated by high-inertia motors, preventing DC-link overvoltage and ensuring stable, precise operation of variable frequency drives (VFDs). Optimized for ABB ACS800 series drives (frame size R8/R9), it delivers exceptional power-handling capabilities, rapid dynamic response, and comprehensive protection, making it ideal for heavy industrial applications demanding reliable, high-power braking performance.
Description
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | Universal External Brake Chopper Module |
| Compatible Drive Systems | ABB ACS800 Series (Frame R8, R9; 0400–07 models) |
| Nominal Input Voltage | 690V Three-Phase AC (DC-link connection) |
| Peak Braking Power | 375kW (10-second duty cycle) |
| Peak Braking Power | 375kW (30-second duty cycle, repeated every minute) |
| Continuous Power Dissipation | 13.5kW (for extended braking durations) |
| Minimum External Resistance | 2.7 Ohms (configurable via parallel resistor combinations) |
| Control Interface | DC-link voltage monitoring (integrated with VFD control logic) |
| Switching Technology | High-power IGBT-based chopper topology |
| Response Time | Millisecond-level dynamic voltage regulation |
| Protection Features | Overcurrent, Overvoltage, Overtemperature, Short-circuit |
| Cooling Method | Convection / Forced-air cooling (integrated heatsink) |
| Enclosure Rating | IP00 (for internal cabinet installation) |
| Operating Temperature | -25°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5–95% non-condensing |
| Physical Dimensions | 334mm (W) × 240mm (D) × 583.5mm (H) |
| Weight | 24kg |
| Mounting | Rear-panel mounting (4 × 7mm holes, 200mm × 562mm pattern) |
| Certifications | CE, UL, CSA, RoHS compliant |
| Product ID | 59011065 (replaces 59012517, 58984124) |
| Country of Origin | Estonia / FinlandABB Group |
Key Features
- High-Power Braking Capacity: Delivers 375kW peak braking power to handle massive regenerative energy loads in heavy industrial machinery, supporting both intermittent (10s/30s) and continuous braking profiles.
- 690V System Compatibility: Engineered specifically for high-voltage 690V AC drive systems, providing a perfect match for large-scale industrial motors and heavy equipment.
- Precise Voltage Regulation: Advanced IGBT switching technology maintains strict DC-link voltage stability, eliminating overvoltage faults and ensuring uninterrupted drive operation during rapid deceleration.
- Dynamic Response: Microsecond-level response to voltage spikes, enabling instant energy dissipation and precise control over motor stopping and overhauling conditions.
- Modular & Scalable: Compact, robust chassis design supports easy integration into control cabinets. Parallel connection capability allows system expansion for even higher braking power requirements.
- Comprehensive Protection Suite: Built-in overcurrent, overvoltage, overtemperature, and short-circuit protection safeguards the chopper, drive, and motor from electrical faults and damage.
- Seamless VFD Integration: Directly connects to ABB ACS800 drive DC-link terminals, with automatic parameter synchronization and full compatibility with drive control algorithms.
- Industrial Durability: Conformal-coated circuit boards and a heavy-duty heatsink ensure reliable performance in harsh environments with high vibration, dust, and temperature fluctuations.
- Easy Installation & Maintenance: Rear-mount design, clearly labeled terminals, and diagnostic LED indicators simplify installation, commissioning, and field maintenance.
- High Efficiency: Optimized power electronics minimize energy losses during operation, reducing heat generation and improving overall system efficiency.
Application Scenarios
The ABB NBRA-669C is deployed in heavy industrial sectors requiring high-power, reliable regenerative braking:
- Crane & Hoist Systems: Controls downward motion of heavy loads in overhead cranes, gantry cranes, and hoists, preventing uncontrolled descent and ensuring precise positioning.
- Material Handling: Provides dynamic braking for large conveyors, stackers, reclaimers, and high-inertia roller tables in mining, ports, and logistics.
- Oil & Gas: Manages braking for pumps, compressors, and winches in offshore platforms, refineries, and pipeline operations.
- Marine & Offshore: Controls propulsion and deck machinery (winches, cranes) on commercial vessels and offshore rigs operating at 690V.
- Metallurgy: Delivers reliable braking for rolling mills, extruders, and large processing machines in steel and aluminum production.
- Mining: Brakes for excavators, crushers, conveyors, and hoists in underground and open-pit mining operations.
- Power Generation: Controls turbine auxiliary systems, large fans, and pumps in thermal and hydroelectric power plants.
- Test Benches: Provides high-power load simulation and braking for electric motor and drive test laboratories.
- Elevators & Lifts: Manages high-speed, high-load braking for heavy-duty industrial elevators and construction hoists.
- Large Machine Tools: Controls spindle and axis braking for heavy CNC machines, presses, and metal-forming equipment.
Reviews
There are no reviews yet.