I. Product Description
WR-D4007 is a multi-channel high-power IGBT isolation driver board from RELIANCE. It is designed to be compatible with SR3000 high-voltage frequency converters, VZ7000 frequency converters, and 7000 series direct current transmission power units. It is responsible for multi-channel IGBT gate drive amplification, fault detection, pulse blocking, and status signal feedback, serving as the core trigger board for the power bridge in high-power conversion equipment.
Key Technical Parameters
Power Supply Input: 24VDC isolated control power supply
Driver Configuration: Independent multi-channel drive output
Isolation Method: Electrical isolation through pulse transformers
Voltage Rating for Strong and Weak Electrical Separation: 2500V AC
Single-channel Peak Drive Current: ±8A
Operating Temperature Range: 0°C ~ +60°C
Protection Functions: IGBT short-circuit protection, drive undervoltage, onboard overheat monitoring
Fault Feedback: Switching-level signal transmission back to the main control system
Compatible Components: High-voltage high-power IGBT modules, 2SR40700 and other power units
Product Performance
Synchronous timing synchronization of multi-channel outputs, high consistency in bridge arm drive, reducing unbalanced voltage loss and heat generation
Microsecond-level short-circuit blocking response, IGBT direct fault instantaneous disconnection of drive pulses, preventing the expansion of faults and damage to power units
Industrial thickened flame-retardant PCB, reinforced component layout, resistant to vibration, resistant to cabinet harmonic electromagnetic interference, supporting 7×24-hour full-load continuous operation
Built-in power supply, operation, and fault indicator lights, allowing for quick and intuitive determination of fault locations on-site
Plug-in type connection terminals, standard card slot installation structure, convenient and efficient disassembly, spare parts replacement, and maintenance
Optimized gate charging and discharging circuit, suppressing switching voltage spikes, reducing overall switching loss and electromagnetic radiation
Application Domains
RELIANCE SR3000 (2SR40700), VZ7000 medium and high-voltage high-power frequency conversion systems
7000 series four-quadrant direct current feedback transmission devices
Metallurgical rolling steel machines, mine hoists, large water pumps, boiler induced draft fans heavy-load equipment
Industrial high-power rectifier inverter power supplies, high-voltage SVG reactive power compensation power units
Similar Series Models
WR-D4005: Single-channel low-power driver board
S-D4004: Economical dual-channel basic driver board
S-D4006: Standard dual-channel driver board
S-D4007, S-D4012: Upgraded high-power dual-channel driver board
Matching power supply boards: 45C990, 45C992, 45C993
Matching power units: 2SR40500, 2SR40700, 2SR4090
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