RELIANCE VZ3000 UAZ3455 UAZ3475 Power Unit Module
Product Description
2SR40700 is a standard power unit assembly of the RELIANCE SR3000 series high-voltage inverter. It is a multi-level series-connected high-voltage inverter core power cabinet component, integrating IGBT power modules, S-D series driver boards, buffer absorption circuits, cooling air ducts, sampling detection circuits, etc. It is responsible for single-phase rectification and inverter power conversion, and multiple units are connected in series to achieve high-voltage output to drive high-power motors.Key Technical Parameters
1. Rated input voltage of the unit: Three-phase AC 480V level
2. Rated output voltage of the unit: Single-phase AC 690V
3. Compatible driver board: S-D4006, S-D4007, S-D4012
4. Cooling method: Forced air cooling
5. Operating environment temperature: 0℃ to +55℃
6. Internal power supply support: 45C992 control power supply board
7. Protection and sampling: Overvoltage, overcurrent, overheat, IGBT short circuit, phase loss detection of the unit
8. Communication method: Fiber optic isolated signal interaction main control cabinet
9. Structural form: Drawer-type plug-in complete unit
Product Performance
1. The drawer is designed in a modular manner, allowing faulty units to be quickly removed for replacement, significantly reducing the downtime for maintenance.
2. The internal unit integrates rectifier bridge, IGBT inverter, driver, buffer, and temperature and current sampling functions, achieving high integration.
3. Fiber optic isolation is used for transmitting control signals, with strong and weak electrical components completely separated. It has strong resistance to high voltage interference and harmonic impact.
4. Multiple levels of software and hardware protection are linked together. In case of unit failure, it can be bypassed separately without stopping the entire machine, ensuring continuous operation of the unit.
5. The air duct is optimized for cooling, maintaining stable temperature rise under full load, and supporting long-term heavy-load operation for 24 hours.
6. Standardized electrical interfaces and mechanical dimensions enable complete interchangeability of units within the same series, and the availability of spare parts is highly versatile.
Application Domains
1. RELIANCE SR3000 series 6kV/10kV level high-voltage variable frequency speed regulation system
2. Power plant induced draft fans, primary fans, large-scale circulating water pumps
3. Main drainage pumps in mines, belt conveyors, hoisting machine heavy-load equipment
4. Dust removal fans in metallurgy, water supply pumping stations, large-scale cement grinding mills load
5. Large buildings, chemical industry high-power energy-saving variable frequency transmission scenarios
Same Series Models
1. 2SR40500: Low current basic power unit
2. 2SR40700: Standard medium-large power main unit
3. 2SR40900: High current heavy-load enhanced power unit
Companion board card combinations:
Driver board: S-D4004/S-D4006/S-D4007/S-D4012
Control power supply: 45C990, 45C992, 45C993
Auxiliary driver module: WR-D4005, WR-D4007
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