KRSD-30A VSD Compressor
30HP variable speed drive compressor with intelligent control for optimal energy efficiency
Product Details
When Every Kilowatt Counts
In manufacturing facilities where air demand fluctuates throughout the shift, a fixed-speed compressor wastes energy running at full capacity during low-demand periods. The KRSD-30A solves this with an intelligent variable speed drive that continuously matches motor output to actual air consumption — delivering up to 35% energy savings compared to conventional fixed-speed units.
In manufacturing facilities where air demand fluctuates throughout the shift, a fixed-speed compressor wastes energy running at full capacity during low-demand periods. The KRSD-30A solves this with an intelligent variable speed drive that continuously matches motor output to actual air consumption — delivering up to 35% energy savings compared to conventional fixed-speed units.
How VSD Technology Works
The built-in inverter monitors discharge pressure in real time and adjusts motor speed between 300 and 3,600 RPM. When demand drops, the motor slows down proportionally — cutting power consumption cubically. A 20% reduction in speed translates to nearly 50% less energy use at that operating point.
Application Scenarios
- CNC machining centers: Pneumatic clamps engage intermittently; VSD eliminates idle waste
- Packaging lines: Demand spikes during sealing, drops between batches
- Textile mills: Spinning frames cycle on and off across shifts
- Food & beverage: Filling and blowing operations follow production schedules
Energy Savings Breakdown
Based on a typical 4,000-hour annual operating profile with 60% average load factor:
| Metric | Fixed Speed | KRSD-30A VSD | Savings |
|---|---|---|---|
| Annual Energy (kWh) | 96,000 | 62,400 | 35% |
| Annual Cost (@ $0.12/kWh) | $11,520 | $7,488 | $4,032 |
| CO₂ Reduction (kg) | — | — | 2,800 |
| Metric | Fixed Speed | KRSD-30A VSD | Savings |
|---|---|---|---|
| Annual Energy (kWh) | 96,000 | 62,400 | 35% |
| Annual Cost (@ $0.12/kWh) | $11,520 | $7,488 | $4,032 |
| CO₂ Reduction (kg) | — | — | 2,800 |
Technical Specifications
| Parameter | Value |
|---|---|
| Power | 22 kW (30 HP) |
| Pressure Range | 8 – 13 bar |
| Flow Range | 2.5 – 3.8 m³/min |
| Drive Type | Direct drive |
| Speed Range | 300 – 3,600 RPM |
| Inverter | Integrated intelligent VSD |
| Noise Level | 68 dB(A) |
| Weight | 520 kg |
Direct Drive Reliability
Unlike belt-driven VSD compressors, the KRSD-30A uses a 1:1 direct drive coupling that eliminates belt wear, removes a maintenance item, and improves transmission efficiency to 100%. The permanent magnet motor achieves IE4 super-premium efficiency across the entire speed range.
Guangzhou Qixiang Industry Co., Ltd. provides a 3-year warranty on the inverter and motor, with remote diagnostics available through the KELETER IoT platform.