| Specification |
| Model NB-T | 20248 | 30224/48 |
| Rated Power | 2000W | 3000W |
| Peak Power（20ms) | 6000W | 9000W |
| Start Motor | 2HP | 3HP |
| Battery Voltage | 48VDC | 24/48VDC |
| Size(L*W*Hmm) | 420*208*348 |
| Packing Size(L*W*Hmm) | 490*300*400 |
| N.W.(kg) | 23 | 29 |
| G.W.(kg)（Carton Packing） | 24 | 30 |
| Installation Method | Tower |
| Parameter |
| Input | DC Input Voltage Range | 10.5-15VDC（Single battery voltage） |
| AC Input Voltage Range | 73VAC~138VAC / 145VAC~275VAC |
| AC Input Frequency Range | 45Hz~64Hz |
| Max AC charging current | 15A MAX（Depending on the model） |
| AC charging voltage | LEAD battery：Charge Voltage :14V; Float Voltage:13.8V（Single battery voltage） |
| AC charging method | Three-stage (constant current, constant voltage, floating charge) |
| Output | Efficiency(Battery Mode) | ≥85% |
| Output Voltage(Battery Mode) | 110VAC±2% / 220VAC±2%(Battery Mode) |
| Output Frequency(Battery Mode) | 50Hz±0.5 or 60Hz±0.5 |
| Output Wave(Battery Mode) | Pure Sine Wave |
| Efficiency(AC Mode) | >99% |
| Output Voltage(AC Mode) | 110VAC±10% / 220VAC±10% |
| Output Frequency(AC Mode) | Tracking Automatically |
| Output waveform distortion(Battery Mode) | ≤3%（Linear load） |
| No load loss(Battery Mode) | ≤2.5% rated power |
| No load loss(AC Mode) | ≤2% rated power（ charger does not work in AC mode） |
| No load loss(Energy saving Mode) | ≤10W |
| Battery Type | Customize battery | Charge and discharge parameters of different types of batteries (such as lithium batteries, etc.)
can be customized according to user requirements |
| Protection | Battery undervoltage alarm | 11V（Single battery voltage） |
| Battery undervoltage protection | 10.5V（Single battery voltage） |
| Battery overvoltage alarm | 15V（Single battery voltage） |
| Battery overvoltage protection | 17V（Single battery voltage） |
| Battery overvoltage recovery voltage | 14.5V（Single battery voltage） |
| Overload power protection | Automatic protection (battery mode), circuit breaker or insurance (AC mode) |
| Output short circuit protection | Automatic protection (battery mode), circuit breaker or insurance (AC mode) |
| Temperature protection | >90°C（Shut down output） |
| Alarm | A | Normal working condition, buzzer has no alarm sound |
| B | Buzzer sounds 4 times per second when battery failure, voltage abnormality, overload protection |
| C | When the machine is turned on for the first time, the buzzer will prompt 5 when the machine is normal |
Inside Solar
controller
| Charging Mode | PWM or MPPT |
| Charging current | 10A,20A,30A,40A,50A,60A |
| PV Input Voltage Range | 24V System：30V-44V；48V System：60V-88V |
| Max PV Input Voltage(At 25℃) | 24V System：50V; 48V System：100V |
| PV Array Maximum Power | 24V System：280W,560W,840W,1120W,1400W,1680W； 48V System：560W,1120W,1680W,2240W,2800W,3360W |
| Standby loss | ≤3W |
| Maximum conversion efficiency | >95% |
| Working Mode | Battery First/AC First/Saving Energy Mode |
| Transfer Time | ≤4ms |
| Display | LCD |
| Thermal method | Cooling fan in intelligent control |
| Communication | RS232(Optional) |
| Environment | Operating temperature | -10℃~40℃ |
| Storage temperature | -15℃~60℃ |
| Noise | ≤55dB |
| Elevation | 2000m（More than derating） |
| Humidity | 0%~95% ,No condensation |
| Warranty | 3 years |
| Note: All specifications are subject to change without prior notice |
