Two Power Modes
Grid-tied runs on utility AC at normal operation. Off-grid, common in remote ESS/telecom cabins, runs from PV plus battery via inverter or DC direct drive, needing low standby and wide voltage range.
Adaptation
- Fit an ATS for automatic transfer: mains priority, off-grid backup
- Off-grid uses DC 48V/DC 320V direct-drive compressors to cut conversion loss
- Cloudy days: economy mode raises the upper temperature limit
| Mode | Supply | Feature |
|---|---|---|
| Grid | AC mains | Full stable load |
| Off-grid | PV+battery | Low use, wide V, direct |
Transfer
On mains recovery, delay transfer to avoid inrush; off-grid throttles by battery SoC, cooling critical gear first.
View prefab cabin turnkey solutions or contact Haocheng Industrial Control for turnkey delivery.