A Central Inverter is a high-capacity power conversion unit used in utility-scale solar plants (1 MW+). It converts DC power from thousands of PV modules into grid-compliant AC power.
Key components include:
Brands: SMA, ABB, Huawei, Sungrow, Power Electronics
| Step | Description |
|---|---|
| 1. Fault Diagnosis | Read error codes, log analysis, insulation test |
| 2. Disassembly | Remove IGBTs, capacitors, PCBs, cooling system |
| 3. Component Testing | IGBT curve tracer, LCR meter, thermal imaging |
| 4. Replacement | New IGBTs, drivers, capacitors, fans |
| 5. Rebuild & Calibration | Torque specs, firmware reload, grid sync |
| 6. Full Load Test | Simulate 100% load on test bench |
Turnaround: 5–10 days | Rush: 48 hrs
Warranty: 12–36 months on repaired unit
Ready stock of critical spares for immediate replacement:
FF1400R17IP4, CM600DY-24S, etc.
SMA, ABB, Huawei compatible
450V–1200V film/electrolytic
High-CFM, IP55 rated
| Brand | Model | Capacity |
|---|---|---|
| SMA | Sunny Central 500CP-XT | 500–1000 kW |
| ABB | PVS800-57-1000kW-A | 1000 kW |
| Huawei | SUN2000-185KTL-H3 | 185 kW (centralized) |
| Sungrow | SG2500HV-MV | 2.5 MW |
Quarterly inspection, cleaning, thermography
Real-time SCADA, fault alerts, PR tracking
24/7 on-site response, spare swap
PR Guarantee: > 98% | Uptime: 99.5%
| Benefit | Repair | Spare Supply |
|---|---|---|
| Cost | 30–50% of new | 50–70% of OEM |
| Downtime | 5–10 days | <24 hrs (exchange) |
| Expertise | 500+ units repaired | Global OEM partnerships |
