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ABB ZINT-571 3AUA0000077333 Power Board  

1. Key Parameters

• Product Model: ZINT-571
• Order Code: 3AUA0000077333
• Product Series: ABB Medium-to-High Voltage VFD Control System Power Supply Boards
• Core Function: Converts high-voltage input (DC bus/AC auxiliary) to regulated low-voltage DC for VFD control components; provides multi-layer overcurrent/overvoltage/overtemperature protection; filters electrical noise; ensures uninterrupted power delivery to critical control circuits
• Electrical Specifications:

  Parameter	Details	Performance Metrics
  Input Options	- Option 1: DC bus input (800V~1200V DC, nominal 1000V DC) - Option 2: AC auxiliary input (380V~480V AC, 3-phase, 50/60Hz)	Auto-detects input type via internal switch
  DC Output Specifications	- Main Output (24V DC): 5A (continuous), 8A (peak, 10s) - Auxiliary Output (5V DC): 2A (continuous), 3A (peak, 5s) - Standby Output (12V DC): 1A (continuous)	All outputs regulated to ±1% tolerance; Ripple & Noise: ≤20mVpp
  Power Conversion Efficiency	≥92% (at full load, DC bus input); ≥90% (at full load, AC auxiliary input)	Reduces heat generation, lowering cooling system demands
  Protection Functions	- Overcurrent: 120% of rated output current (latching, manual reset) - Overvoltage: 115% of rated output voltage (clamping) - Overtemperature: Triggers at 85℃ (heatsink temp, reduces output current by 50%) - Short-Circuit: Electronic shutdown (<50μs response)	Prevents damage to VFD control components from electrical faults
  Isolation Rating	3kVrms (between input and output circuits); 2kVrms (between different output channels)	Complies with IEC 60664-1 for medium-voltage system safety

• Mechanical Specifications:
  • Form Factor: Modular PCB assembly with metal heat spreader (custom fit for ACS880-07/08 VFD control cabinets)
  • Dimensions (W×H×D): 180mm × 220mm × 45mm (includes heat spreader and connectors)
  • Mounting: Screw-mounted to VFD chassis (4 M4 screws; torque: 2.0 N·m); shock-absorbing gaskets included
  • Weight: Approximately 850g (includes metal heat spreader)
  • LED Indicators (front edge):
    • Power (PWR): Green (board powered on); Red (input fault/undervoltage)
    • Output Status (24V/5V/12V): Green (output normal); Amber (output overload); Red (output short-circuit)
    • Temperature (TEMP): Green (heatsink <60℃); Amber (60℃~85℃ warning); Red (>85℃ protection)
• Environmental Ratings:
  • Operating Temperature Range: -20℃~+70℃ (-4℉~158℉)
  • Storage Temperature Range: -40℃~+85℃ (-40℉~185℉)
  • Humidity Tolerance: ≤95% RH (non-condensing, 40℃; suitable for damp heavy-industry settings)
  • Vibration Resistance: 10~500Hz, 1.5g acceleration (IEC 60068-2-6; no solder joint failure)
  • Shock Resistance: 25g acceleration (11ms duration, IEC 60068-2-27; maintains power regulation)
• Compliance Standards: IEC 61800-5-1 (adjustable speed drives), EN 61000-6-2 (EMC immunity), UL 508C (industrial safety), CE, RoHS, IEC 60664-1 (insulation coordination)

2. Key Features

• Dual Input Compatibility: Supports both DC bus (800~1200V DC) and AC auxiliary (380~480V AC) inputs, with auto-detection—adapts to diverse VFD installation scenarios (e.g., DC bus power for normal operation, AC auxiliary for backup), ensuring uninterrupted control system power.
• Precision Voltage Regulation: All DC outputs (24V/5V/12V) are regulated to ±1% tolerance with ≤20mVpp ripple, providing stable power for VFD control boards (e.g., SDCS-CON-5) and I/O modules—avoids erratic VFD behavior (e.g., unexpected shutdowns) caused by voltage fluctuations.
• 3kVrms High Isolation: Reinforced isolation between input and output circuits prevents ground loops and voltage transients (common in medium-voltage grids) from damaging sensitive control electronics—critical for safe operation in steel mills and mining VFD systems.
• Fast Fault Protection: Short-circuit response (<50μs) and overcurrent/overtemperature protection isolate faulty circuits to prevent cascading damage to expensive VFD components (e.g., communication boards, sensor interfaces)—reduces repair costs and unplanned downtime.
• High-Efficiency Conversion: ≥92% efficiency (DC bus input) minimizes power dissipation, reducing heatsink size and cooling system load—ideal for dense VFD control cabinets where space and thermal management are critical.
• Shock-Absorbing & Heat-Dissipating Design: Metal heat spreader enhances thermal conductivity (reducing heatsink temp by 15℃), while shock-absorbing gaskets withstand 1.5g vibration—ensures reliability in high-vibration environments (e.g., mining crusher VFDs).

3. Application Fields

• ABB Medium-to-High Voltage VFD Control Power: Primary application—powers VFD control systems:
  • Steel Mill Rolling Drives: Supplies power to ACS880-08 (3MW~5MW) VFD control boards and I/O modules; DC bus input (1000V DC) ensures stable power during heavy rolling loads, while 24V output energizes torque control circuits for precise strip thickness management.
  • Mining Hoist Drives: Powers ACS6080 (2MW~4MW) VFD control systems; AC auxiliary input (480V AC) acts as backup if DC bus power fails, ensuring safe hoist operation during underground ore lifting—critical for mining safety.
• Large-Scale Industrial Control Systems: Supports high-power automation setups:
  • Cement Kiln Drives: Provides 24V DC power to ACS880-07 (1.5MW~3MW) VFD communication modules and temperature sensors; high-temperature tolerance (-20℃~+70℃) withstands kiln-side heat, ensuring continuous kiln rotation control.
  • Power Plant Boiler Fans: Energizes control circuits of ACS880-08 (4MW~5MW) VFDs for boiler induced draft fans; 3kVrms isolation resists voltage transients from power plant grids, maintaining stable fan speed and boiler combustion efficiency.
• Critical Infrastructure Backup Power: Ensures uninterrupted control for essential systems:
  • Water Treatment Pump Stations: Powers control components of 2MW+ pump VFDs; standby 12V DC output keeps emergency stop circuits active during power transitions, preventing pump shutdown and ensuring continuous water supply.
  • Renewable Energy (Wind/Solar) Inverters: Supplies power to control systems of large-scale solar inverter VFDs; dual input options (DC bus/AC auxiliary) adapt to variable solar power generation, ensuring grid-compatible power feed-in.

The structure and details of the product：

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