Background
East China’s largest frozen food base (240kt/year) faced triple challenges:
Corrosion: Frequent acid/alkali washing (humidity >90%, salt fog C5 per IEC 60721-3-5)；
Load Surge: Freezer line start-stop caused ±35% voltage fluctuation (6x/min) with THDi>15%；
Energy Waste: Refrigeration consumed 68% energy, with transformer no-load loss 1.8kW (37% above GB).
SH Power’s ZGS13-400/10 substation reduced lifecycle electricity cost by 23%.
Breakthroughs & Industrial Value
| Dimension | Solution | Technical Details | Quantified Value |
|---|---|---|---|
| Corrosion Fortress | IP65 Stainless Steel Enclosure | ・304SS laser-welded (10,000h salt spray) ・Epoxy resin winding (UL 94 V-0) | Lifespan 8yr→20yr Maintenance cost ↓60% |
| Surge Mitigation | Active Harmonic Filter | ・THDi suppression to 3.2% ・Voltage sag compensation (±35%→±5%, ≤10ms) | Freezer downtime ↓82% (Save ¥4.1M/year) |
| Ultra-Efficiency | Amorphous Core + 3D Winding | ・No-load loss 0.48kW (GB limit 0.72kW) ・Liquid cooling (ΔT≤45K@120% load) | Save 216,000kWh/year (=8,000t cold storage daily use) |
| Smart Guardian | SHDL-FoodSafe System | ・Leakage protection ≤0.1s ・Mold spore AI warning + HVAC control ・Auto HACCP compliance reports | ISO 22000 certified Zero food safety incidents |
