| Model | UC3522-1250P20/C | UC3542-0650P20/C | UC5542-1050P20/C | 
		
			| Utility input | 
		
			| Utility Input Voltage | 176VAC to 264VAC (Default) 90VAC to 285VAC (Configurable)
 | 
		
			| Utility Input Frequency | 45Hz to 65Hz | 
		
			| Maximum Utility Charging Current | 110A | 60A | 100A | 
		
			| Switch Response Time | Switch Response Time – Inverter to Utility: 10ms Switch Response Time – Utility to Inverter (when the load power is higher than 100W): 20ms
 | 
		
			| Utility output | 
		
			| Rated Output Voltage | 220/230VAC±3% | 
		
			| Utility Output Frequency | 50/60Hz±0.2% | 
		
			| Rated Output Power | 100W to 3500W (Default: 2300W) | 
		
			| Power Factor | 0.99 | 
		
			| Inverter output | 
		
			| Inverter Rated Power (@30℃) | 3500W | 5500W | 
		
			| 3-second Transient Surge Output Power | 7000W | 8500W | 
		
			| Inverter Output Voltage | 220/230VAC±3% | 
		
			| Inverter Frequency | 50/60Hz±0.2% | 
		
			| Output Voltage Waveform | Pure sine wave | 
		
			| Load Power Factor | 0.2-1(VA ≤ Rated output power) | 
		
			| THDu (Total Harmonic Voltage Distortion) | ≤3% (24V resistive load) | ≤3% (48V resistive load) | 
		
			| Maximum Load Efficiency | 92% | 
		
			| Maximum Inverter Efficiency | 94% | 
		
			| Maximum Main Load | 3500W | 5500W | 
		
			| Maximum Second Load | 3500W | 5500W | 
		
			| Main Output Cut-Off Voltage | Equal to “Under Voltage Warning Voltage” | 
		
			| Second Output Cut-Off Voltage | Equal to “Low Voltage Disconnect Voltage” | 
		
			| Dual Output Recovery Voltage | Equal to “Low Voltage Reconnect Voltage” | 
		
			| Solar controller | 
		
			| PV Maximum Open-circuit Voltage | 500V (At minimum operating environment temperature) 440V (At 25℃)
 | 
		
			| MPPT Voltage Range | 85V to 450V | 
		
			| Number of MPPTs | 1 | 2 | 
		
			| PV Maximum Input Current | One way, 16A | Two ways, 2x16A | 
		
			| PV Maximum Short-circuit Current | One way, 18A | Two ways, 2x18A | 
		
			| PV Maximum Input Power | 4200W | 2×3300W | 
		
			| PV Maximum Charging Current | 120A | 60A | 100A | 
		
			| MPPT Maximum efficiency | ≥99.5% | 
		
			| Battery | 
		
			| Battery Rated Voltage | 24VDC | 48VDC | 
		
			| Battery Work Voltage Range | 20.4VDC to 32.0VDC | 40.8VDC to 64.0VDC | 
		
			| Battery Maximum Charging Current | 120A | 60A | 100A | 
		
			| Others | 
		
			| No-load Losses | ≤1.5A | ≤0.8A | ≤1.1A | 
		
			| Test condition: Utility, PV and Load are disconnected, AC output is ON, fan stops, @24V input | Test condition: Utility, PV and Load are disconnected, AC output is ON, fan stops, @48V input | 
		
			| Standby Current | ≤1.1A | ≤0.6A | ≤0.8A | 
		
			| Test condition: Utility, PV and Load are disconnected, AC output is OFF, fan stops, @24V input | Test condition: Utility, PV and Load are disconnected, AC output is OFF, fan stops, @48V input | 
		
			| Communication with BMS | RS485 | 
		
			| Communication with Portal | RS485 | 
		
			| Parallel Function | Yes, 12 units in standard, 16 units at most | 
		
			| Work Temperature Range | -20℃ to +50℃ (When the environment temperature exceeds 30℃, the actual output power is reduced appropriately) | 
		
			| Storage Temperature Range | -25℃ to +60℃ | 
		
			| Enclosure | IP20 (With ANTI-DUST KIT) | 
		
			| Relative Humidity | < 95% (N.C.) | 
		
			| Altitude | <4000M (If the altitude exceeds 2000 meters, the actual output power is reduced appropriately) | 
		
			| Certifications and Standards | IEC 62109-1, IEC 62109-2, IEC 61683, IEC 62368 | 
		
			| Mechanical parameters | 
		
			| Dimension (Length x Width x Height) | 590mm × 300mm × 163mm | 534mm × 300mm × 163mm | 590mm × 300mm × 163mm | 
		
			| Mounting size (Length x Width) | 568mm × 245mm | 512mm × 245mm | 568mm × 245mm | 
		
			| Mounting hole size | Φ9mm/Φ10mm | Φ9mm/Φ10mm | Φ9mm/Φ10mm | 
		
			| Net Weight | 13.8Kg | 12.7Kg | 15.5Kg |