Product Introduction
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1. Using IGBT from Mitsubishi company as the power components
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2. Using American ATEMEL company microprocessor as figure controller
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3. Perfect protection and warning functions
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4. Circuit frame compact, Max. Efficiency ≥90%
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5. With wide input voltage range
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6. RS232/485/WIFI/GPRS communication
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7. Touch screen English LCD, perfect display, interface-friendly
Touch Screen Display
Product Parameter
Technical parameters of three-phase off-grid inverter 10KW
| Type |
NB48-10KSZ |
NB96-10KSZ |
NB120-10KSZ |
NB240-10KSZ |
| DC Input |
| Input rated voltage |
48 VDC |
96 VDC |
120 VDC |
240 VDC |
| Input rated current |
231 A |
116 A |
93 A |
46 A |
| Input DC voltage allowing range |
40-62 VDC |
80-124 VDC |
100-155 VDC |
200-310 VDC |
| AC Input (AC bypass) |
| Allow input voltage range |
220 VAC / 380 VAC / 400 VAC ± 15% |
| Input rated current |
28A / 15A / 14.5A |
| Bypass transfer time |
≤40ms (Can be customized ≤ 4ms version) |
| AC Output |
| Output rated power |
10KW |
| Output rated voltage and frequency |
220 VAC / 380 VAC / 400 VAC, 50Hz / 60Hz |
| Output rated current |
28A / 15A / 14.5A |
| Output voltage accuracy |
220 VAC / 380 VAC / 400 VAC ± 1% |
| Output frequency accuracy |
50Hz / 60Hz ± 0.05% |
| Wave Form |
Pure sine wave (Isolation transformer) |
| THD. |
≤3% (Linear load) |
| Power factor (PF) |
1 |
| Overload capacity |
120%, 5 minutes / 200%, 3 seconds |
| Crest factor (CF) |
3:1 |
| Inverter efficiency |
>94% |
| Working Environment |
| Dielectric strength |
1500VAC, 1 minute |
| Noise (1m) |
≤50dB |
| Ambient temperature |
-20℃ ~ +60℃ |
| Humidity |
0~90%, No condensation |
| Altitude |
<2000m (Higher than 2000m rated power should be reduced) |
| Function & Communication |
| Protection function |
Input reverse protection, input under-voltage protection, output overload protection, output short circuit protection, thermal protection |
| Pure Sine Wave / Copper transformer |
Yes / Yes |
| Communication mode |
RS485, Wifi, GPRS, Ethernet (Modbus RTU protocol) |
| Solar / AC Charger / Generator Port |
Optional, available |
| Size (mm) / Weight (kg) |
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 |
| Input rated voltage |
48 VDC |
96 VDC |
120 VDC |
240 VDC |
| Input rated current |
463 A |
231 A |
185 A |
93 A |
| Input DC voltage range |
40-62 VDC |
80-124 VDC |
100-155 VDC |
200-310 VDC |
| AC Input (AC Bypass) |
| Allow input voltage range |
220 VAC / 380 VAC / 400 VAC ± 15% |
| Input rated current |
55.5A / 30A / 29A |
| Bypass transfer time |
≤100ms (Can be customized ≤4ms version) |
| AC Output |
| Output rated power |
20KW |
| Output rated voltage and frequency |
220 VAC / 380 VAC / 400 VAC, 50Hz / 60Hz |
| Output rated current |
55.5A / 30A / 29A |
| Output voltage accuracy |
220 VAC / 380 VAC / 400 VAC ±2% |
| Output frequency accuracy |
50Hz / 60Hz ± 0.05% |
| Waveform distortion (THD). |
≤3% (Linear load) |
| Dynamic response time |
2ms (Load 0 ↔ 100%) |
| Power factor (PF) |
1 |
| Overload capacity |
120%, 5 minutes / 200%, 3 seconds |
| Inverter efficiency |
94% |
| Working Environment & Dimensions |
| Noise (1m) / Ambient Temp |
≤50dB / -20℃ ~ +60℃ |
| Humidity / Altitude |
0~90% / <6000m (Higher than 2000m rated power should be reduced) |
| Size (mm) / Weight (kg) |
520 × 1160 × 1350 mm / 280 kg |
Technical parameters of three-phase off-grid inverter 30KW
| Type |
NB120-30KSZ |
NB240-30KSZ |
NB380-30KSZ |
| DC Input |
| Input rated voltage |
120 VDC |
240 VDC |
380 VDC |
| Input rated current |
278 A |
139 A |
88 A |
| Input DC voltage range |
100-155 VDC |
200-310 VDC |
320-496 VDC |
| AC Input (AC Bypass) |
| Allow input voltage range |
220 VAC / 380 VAC / 400 VAC ± 15% |
| Input rated current |
83A / 45.5A / 43.5 A |
| Bypass transfer time |
≤100ms (Can be customized ≤4ms version) |
| AC Output |
| Output rated power |
30KW |
| Output rated voltage and frequency |
220 VAC / 380 VAC / 400 VAC, 50Hz / 60Hz |
| Output voltage accuracy |
220 VAC / 380 VAC / 400 VAC ± 1% |
| Inverter efficiency |
94% |
| Size (mm) / Weight (kg) |
660 * 1300 * 1600 mm / 360 kg |
Technical parameters of three-phase off-grid inverter 40KW
| Type |
NB220-40KSZ |
NB240-40KSZ |
NB380-40KSZ |
| DC Input |
| Input rated voltage |
220 VDC |
240 VDC |
380 VDC |
| Input rated current |
202 A |
185 A |
117 A |
| Input DC voltage range |
180-279 VDC |
200-310 VDC |
320-496 VDC |
| AC Input (AC Bypass) |
| Allow input voltage range |
220 VAC / 380 VAC / 400 VAC ± 15% |
| Input rated current |
111.2A / 60.8A / 58A |
| AC Output |
| Output rated power |
40KW |
| Inverter efficiency |
94% |
| Size (mm) / Weight (kg) |
760 * 1400 * 1600 mm / 550 kg |
Technical parameters of three-phase off-grid inverter 50KW
| Type |
NB480-50KSZ |
NB380-50KSZ |
| DC Input |
| Input rated voltage |
480 VDC |
380 VDC |
| Input rated current |
115 A |
146 A |
| Input DC voltage range |
400-620 VDC |
320-496 VDC |
| AC Input (AC Bypass) |
| Allow input voltage range |
220 VAC / 380 VAC / 400 VAC ± 15% |
| Input rated current |
139A / 76A / 72.5A |
| AC Output |
| Output rated power |
50KW |
| Inverter efficiency |
94% |
| Size (mm) / Weight (kg) |
660 * 1300 * 1600 mm / 450 kg |
Product Application Scenario
Factory Gallery
Frequently Asked Questions (FAQ)
Q What are the main power components used in these three-phase off-grid inverters?
These inverters use high-quality IGBTs from Mitsubishi company as the power components and an American ATEMEL company microprocessor as the figure controller, ensuring stable performance and high conversion efficiency.
Q What communication modes and protocols do the inverters support?
The units support multiple communication interfaces, including RS485, WIFI, GPRS, and Ethernet, running on the standard Modbus RTU protocol for remote system monitoring.
Q Does the inverter feature a pure sine wave output?
Yes. All inverter models generate a pure sine wave output and are equipped with an integrated copper isolation transformer to protect sensitive loads from electrical noise.
Q What built-in protections are included?
The system features comprehensive protection functions, including input reverse protection, input under-voltage protection, output overload protection, output short circuit protection, and thermal protection.
Q Can the bypass transfer time be customized?
Yes. While the standard bypass transfer time is ≤40ms (for 10KW) or ≤100ms (for 20KW-50KW), we can offer a customized version with a fast transfer time of ≤4ms to suit your application requirements.
Q Are solar charger and generator connections supported?
Yes. The solar charger, AC charger, and generator ports are optional features available upon request for all models ranging from 10KW to 50KW.
Demin Power
