Ⅰ. Paliwanagan ng Proyekto & Analisis ng Sakit ng Ulo
Ginagamit ng opisina sa Mehiko ang 15HP na komersyal na sentral na sistema ng air conditioning na orihinal na pinapagana ng single-phase 220V grid. Dahil sa kakulangan ng 380V three-phase driving voltage, lumalampas ang startup current ng compressor sa mga limitasyon ng overload (nakatantiya sa 3.2× rated current), nagdudulot ng pagbaba ng refrigeration efficiency hanggang 40%, kasama ang:
- Pagtaas ng temperatura ng motor winding na lumalampas sa pamantayan (ΔT > 65°C), pababain ng lifespan ng insulation ng 60%
- Madalas na pagkawala ng kontak (tatlong pagkakamali kada buwan sa average)
- Power factor na lang 0.72 may malaking reactive power loss
- Kakulangan ng suporta para sa variable frequency speed regulation, accuracy ng temperature control ±2.5°C
Ⅱ. disenyo ng Solusyon ng American Standard Distribution Transformer ng ROCKWELL
1. Pagpili ng Pangunahing Kaugnayang
American Standard Distribution Transformer na sumusuporta sa 220V to 380V conversion
- Electromagnetic design: Class H insulation dry-type transformer na may N+1 redundant winding configuration, short-circuit impedance ng 6%
- Performance: Rated capacity 150kVA, conversion efficiency ≥98.5%, 150% overload capacity para sa 2 oras
- UL certifications: Compliant sa UL 508A industrial control standards at UL 60950-1 IT equipment safety requirements
2. Integrasyon ng Intelligent Monitoring System
(1) Remote monitoring module
- Modbus RTU/TCP dual-protocol interface para sa SCADA system integration
- Real-time monitoring ng 18 parameters kasama ang three-phase voltage (±0.5% accuracy), current harmonics (THD <3%), at winding temperature (±1°C)
(2) Predictive protection
- Tiered alarms: Pre-alarm (85% threshold) at emergency trip (105% threshold)
- Recording ng fault waveform para sa latest 50 abnormal events
(3) Energy Efficiency Optimization
- Dynamic reactive power compensation: 60kVar automatic switching capacitor bank aataas ang power factor hanggang 0.95
- VFD retrofit: American Standard Distribution Transformer-compatible variable frequency drives nagbibigay-daan sa 0-60Hz stepless compressor speed regulation
- Heat recovery system: Reuse ng condenser waste heat aataas ang comprehensive EER hanggang 4.8
Ⅲ. Verification ng Resulta ng Implementasyon
Metric |
Bago ang Retrofit |
Matapos ang Retrofit |
Pagbabago |
Startup current |
320A |
98A |
69% reduction |
Refrigeration efficiency |
40% |
98% |
145% increase |
Monthly failures |
3 |
0 |
100% elimination |
Annual power consumption |
580,000kWh |
476,000kWh |
18% reduction
|
Temperature control accuracy |
±2.5℃ |
±0.5℃ |
5 × improvement |
Ⅳ. Lokal na Serbisyo Assurance
- On-site engineering team: NEC-certified electricians na may 2-hour emergency response
- Digital O&M platform: Device Health Index (DHI) analytics nakakamit ng 92% predictive maintenance accuracy