Product parameter
Technical parameters of three-phase off-grid inverter 10KW
| Type |
NB48-10KSZ |
NB96-10KSZ |
NB120-10KSZ |
NB240-10KSZ |
| DC Input Rated Voltage |
48 VDC |
96 VDC |
120 VDC |
240 VDC |
| DC Input Rated Current |
231 A |
116 A |
93 A |
46 A |
| DC Input Voltage Range |
40-62 VDC |
80-124 VDC |
100-155 VDC |
200-310 VDC |
| AC Bypass Voltage Range |
220 VAC / 380 VAC / 400 VAC ± 15% |
| AC Bypass Rated Current |
28A / 15A / 14.5A |
| Bypass Transfer Time |
≤40ms (Can be customized ≤4ms version) |
| AC Output Rated Power |
10KW |
| AC Output Voltage & Freq. |
220 VAC / 380 VAC / 400 VAC, 50Hz / 60Hz |
| AC Output Rated Current |
28A / 15A / 14.5A |
| Output Voltage Accuracy |
± 1% |
| Output Frequency Accuracy |
± 0.05% |
| Wave Form |
Pure sine wave (Isolation transformer) |
| THD |
≤3% (Linear load) |
| Power Factor (PF) |
1 |
| Overload Capacity |
120% for 5 minutes, 200% for 3 seconds |
| Crest Factor (CF) |
3:1 |
| Inverter Efficiency |
>94% |
| Dielectric Strength |
1500VAC, 1 minute |
| Noise (1m) |
≤50dB |
| Ambient Temperature |
-20℃ ~ +60℃ |
| Humidity |
0~90%, No condensation |
| Altitude |
<2000m (power derated above 2000m) |
| Protection Functions |
Input reverse protection, input under-voltage protection, output overload protection, output short circuit protection, thermal protection |
| Pure Sine Wave |
Yes |
| Copper Transformer |
Yes |
| Communication Mode |
RS485, Wifi, GPRS, Ethernet (Modbus RTU protocol) |
| Solar / AC Charger |
Optional, available |
| Generator Port |
Optional, available |
| Dimensions / Weight |
450×830×1100 mm / 180 kg |
Technical parameters of three-phase off-grid inverter 20KW
| Type |
NB48-20KSZ |
NB96-20KSZ |
NB120-20KSZ |
NB240-20KSZ |
| DC Input Rated Voltage |
48 VDC |
96 VDC |
120 VDC |
240 VDC |
| DC Input Rated Current |
463 A |
231 A |
185 A |
93 A |
| DC Input Voltage Range |
40-62 VDC |
80-124 VDC |
100-155 VDC |
200-310 VDC |
| AC Bypass Voltage Range |
220 VAC / 380 VAC / 400 VAC ± 15% |
| AC Bypass Rated Current |
55.5A / 30A / 29A |
| Bypass Transfer Time |
≤100ms (Can be customized ≤4ms version) |
| AC Output Rated Power |
20KW |
| AC Output Voltage & Freq. |
220 VAC / 380 VAC / 400 VAC, 50Hz / 60Hz |
| AC Output Rated Current |
55.5A / 30A / 29A |
| Output Voltage Accuracy |
±2% |
| Inverter Efficiency |
94% |
| Ambient Temperature |
-20℃ ~ +60℃ |
| Dimensions / Weight |
520×1160×1350 mm / 280 kg |
Technical parameters of three-phase off-grid inverter 30KW
| Type |
NB120-30KSZ |
NB240-30KSZ |
NB380-30KSZ |
| DC Input Rated Voltage |
120 VDC |
240 VDC |
380 VDC |
| DC Input Rated Current |
278A |
139 A |
88 A |
| DC Input Voltage Range |
100-155 VDC |
200-310 VDC |
320-496 VDC |
| AC Bypass Voltage Range |
220 VAC / 380 VAC / 400 VAC ± 15% |
| AC Bypass Rated Current |
83A / 45.5A / 43.5 A |
| Bypass Transfer Time |
≤100ms (Can be customized ≤4ms version) |
| AC Output Rated Power |
30KW |
| Dimensions / Weight |
660*1300*1600mm / 360kg |
Technical parameters of three-phase off-grid inverter 40KW
| Type |
NB220-40KSZ |
NB240-40KSZ |
NB380-40KSZ |
| DC Input Rated Voltage |
220 VDC |
240 VDC |
380 VDC |
| DC Input Rated Current |
202 A |
185 A |
117 A |
| DC Input Voltage Range |
180-279 VDC |
200-310 VDC |
320-496 VDC |
| AC Bypass Rated Current |
111.2A / 60.8A / 58A |
| AC Output Rated Power |
40KW |
| Dimensions / Weight |
760*1400*1600mm / 550kg |
Technical parameters of three-phase off-grid inverter 50KW
| Type |
NB480-50KSZ |
NB380-50KSZ |
| DC Input Rated Voltage |
480 VDC |
380 VDC |
| DC Input Rated Current |
115 A |
146 A |
| DC Input Voltage Range |
400-620 VDC |
320-496 VDC |
| AC Bypass Rated Current |
139A / 76A / 72.5A |
| AC Output Rated Power |
50KW |
| Dimensions / Weight |
660*1300*1600mm / 450kg |
Frequently Asked Questions (FAQ)
1. What are the key power components used in these three-phase off-grid inverters?
The inverters utilize high-performance Mitsubishi IGBTs as the core power components, along with microprocessors from ATMEL for stable and precise digital controller functions.
2. Does the inverter feature an isolation transformer?
Yes, these three-phase off-grid inverters are equipped with a heavy-duty copper isolation transformer, producing a pure sine wave output with excellent transient response and protection.
3. What is the maximum efficiency of these off-grid inverters?
The maximum inverter efficiency exceeds 94%, ensuring minimal energy loss during the DC-to-AC power conversion process.
4. What remote monitoring options are supported?
The inverters support multiple communication modes including RS485, WiFi, GPRS, and Ethernet using the standard Modbus RTU protocol for seamless remote data monitoring.
5. Can the bypass transfer time be customized for critical loads?
Yes, while the standard bypass transfer time is ≤40ms or ≤100ms depending on the model, it can be customized to a faster ≤4ms version to accommodate highly sensitive electronic equipment.
6. What protective functions are built into the system?
The inverters feature comprehensive safety protections, including DC input reverse polarity protection, DC input under-voltage protection, AC output overload protection, AC output short circuit protection, and over-temperature (thermal) protection.
Demin Power
