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EESNB 300KW
ENGELEC
EESNB 300KW
EESNB 300KW Off-Grid Power Frequency Inverter Three phase
Features
◆ Complete isolation-type inverter technology, noiseless output.
◆ Adoption of advanced SPWM technology, pure sine wave output.
◆ Dynamic current loop control technology to ensure inverter reliable operation.
◆ Wide DC input voltage range.
◆ Excellent EMC design.
◆ Low output harmonic distortion (THD≤3%).
◆ LED indicators for input voltage range, load power range, normal output & failure state.
◆ Optional energy saving mode.
◆ Extensive protections: reverse polarity, short-circuit, overload, under/over input voltage over-temperature, and inverter’s inner fault identification protections.
◆ Wide working temperature range (industrial level).
◆ Continuous operation at full power.
Application:
◆ For desolate area like mountain, island, pasturing area, etc.
◆ For transportation system like beacon light, traffic light, street light, etc.
◆ For communication system: unattached operation microwave middle station, optical cable maintenance station, etc.
◆ For solar power station, wind-solar power station, park charging station, family power house, factory power station, etc.
◆ For solar building: has good business future.
◆ For the new technology application project.
Technical Parameters
| Type | EESNB300-480 | |
| DC input | Input rated voltage | 480 VDC |
| Input rated current | 694.4A | |
| Input DC voltage allowing range | 400-620 VDC | |
| AC input (AC bypass) | Allow input voltage range | 220 VAC / 380 VAC / 400 VAC ± 15% VAC |
| Input rated current | 830A / 450A / 430A | |
| Bypass transfer time | ≤100ms（4ms optional） | |
| AC output | Rated capacity | 300KVA |
| Output rated voltage and frequency | 220 VAC / 380 VAC / 400 VAC，50Hz / 60Hz | |
| Output rated current | 830A / 450A / 430A | |
| Output voltage accuracy | 220 VAC / 380 VAC / 400 VAC ± 2% | |
| Output frequency accuracy | 50Hz / 60Hz ± 0.05% | |
| Wave | Pure sine wave (Isolation transformer) | |
| THD. | ≤3%(Linear load) | |
| Power factor (PF) | 0.8 | |
| Overload capacity | 120%,10 minutes | |
| Overcurrent capacity | 200%,10 seconds | |
| Crest factor (CF) | 3:01 | |
| Inverter efficiency | ＞96% | |
| Working Environment | Dielectric strength | 1500VAC,1分钟minute |
| Noise (1m) | ≤50dB | |
| Ambient temperature | -10℃~+50℃ | |
| Humidity | 0~90%, No condensation | |
| Altitude | ＜2000m | |
| Higher than 2000m rated power should be reduced | ||
| Production function | Input reverse protection, input under-voltage protection, output overload protection, output short circuit protection, thermal protection | |
| Communication interface | RS485/WIFI/GPRS/Ethernet (optional) | |
| Pure Sine Wave | Yes | |
| Equipped With Copper Transformer | Yes | |
| Solar Charger | Optional | |
| AC Charger | Optional | |
| Generator Port | Optional | |
| Size | 1280*2000*2060mm | |
| Weight | 2500 kg | |
Project Sample
EESNB 300KW Off-Grid Power Frequency Inverter Three phase
Features
◆ Complete isolation-type inverter technology, noiseless output.
◆ Adoption of advanced SPWM technology, pure sine wave output.
◆ Dynamic current loop control technology to ensure inverter reliable operation.
◆ Wide DC input voltage range.
◆ Excellent EMC design.
◆ Low output harmonic distortion (THD≤3%).
◆ LED indicators for input voltage range, load power range, normal output & failure state.
◆ Optional energy saving mode.
◆ Extensive protections: reverse polarity, short-circuit, overload, under/over input voltage over-temperature, and inverter’s inner fault identification protections.
◆ Wide working temperature range (industrial level).
◆ Continuous operation at full power.
Application:
◆ For desolate area like mountain, island, pasturing area, etc.
◆ For transportation system like beacon light, traffic light, street light, etc.
◆ For communication system: unattached operation microwave middle station, optical cable maintenance station, etc.
◆ For solar power station, wind-solar power station, park charging station, family power house, factory power station, etc.
◆ For solar building: has good business future.
◆ For the new technology application project.
Technical Parameters
| Type | EESNB300-480 | |
| DC input | Input rated voltage | 480 VDC |
| Input rated current | 694.4A | |
| Input DC voltage allowing range | 400-620 VDC | |
| AC input (AC bypass) | Allow input voltage range | 220 VAC / 380 VAC / 400 VAC ± 15% VAC |
| Input rated current | 830A / 450A / 430A | |
| Bypass transfer time | ≤100ms（4ms optional） | |
| AC output | Rated capacity | 300KVA |
| Output rated voltage and frequency | 220 VAC / 380 VAC / 400 VAC，50Hz / 60Hz | |
| Output rated current | 830A / 450A / 430A | |
| Output voltage accuracy | 220 VAC / 380 VAC / 400 VAC ± 2% | |
| Output frequency accuracy | 50Hz / 60Hz ± 0.05% | |
| Wave | Pure sine wave (Isolation transformer) | |
| THD. | ≤3%(Linear load) | |
| Power factor (PF) | 0.8 | |
| Overload capacity | 120%,10 minutes | |
| Overcurrent capacity | 200%,10 seconds | |
| Crest factor (CF) | 3:01 | |
| Inverter efficiency | ＞96% | |
| Working Environment | Dielectric strength | 1500VAC,1分钟minute |
| Noise (1m) | ≤50dB | |
| Ambient temperature | -10℃~+50℃ | |
| Humidity | 0~90%, No condensation | |
| Altitude | ＜2000m | |
| Higher than 2000m rated power should be reduced | ||
| Production function | Input reverse protection, input under-voltage protection, output overload protection, output short circuit protection, thermal protection | |
| Communication interface | RS485/WIFI/GPRS/Ethernet (optional) | |
| Pure Sine Wave | Yes | |
| Equipped With Copper Transformer | Yes | |
| Solar Charger | Optional | |
| AC Charger | Optional | |
| Generator Port | Optional | |
| Size | 1280*2000*2060mm | |
| Weight | 2500 kg | |
Project Sample
