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    Intelligent Low Frequency Hybrid Off-Grid Inverter Pure Sine Wave

    Intelligent low frequency hybrid off-grid inverter pure sine wave hybrid with double functions: solar and AC mains as UPS. Using toroidal transformer ,no-load loss at lowset and much more durable. Easy reading current datas from LCD display. Easy install and use for its reasonable design. Full protections for over load ,overheating and shortcircuit,over voltage ect,more safe

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Low frequency pure sine wave power inverter 300W-20KW

Low-frequency inverters have a few advantages compared to higher frequency inverters; namely their peak power capacity and their reliability. Low-frequency power inverters can operate at a peak power level of up to 300% of their nominal power level for several seconds, while high-frequency inverters can operate at 200% of nominal power for a fraction of a second. Low frequency inverters operate using transformers (as opposed to electronic components such as MOSFETs for high frequency inverters). This results in a stronger, sturdier inverter which is less prone to damage.

  • Place of Origin:

    HEFEI CHINA
  • Brand Name:

    JNGE POWER
  • Model Number :

    JN-L
  • Rated Voltage:

    12V-220V
  • System voltage:

    48V-240V
  • Certification:

    CE ROHS
  • Warranty:

    1 year
  • Color:

    black
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  • product introduction
  • More Details

What is a Low-frequency inverters ?

Low-frequency inverters have the advantage over high-frequency inverters in two fields: peak power capacity, and reliability. Low-frequency inverters are designed to deal with higher power spikes for longer periods of time than high-frequency inverters. Power spikes can occur for a number of reasons (e.g. devices like power tools, pumps, vacuum cleaners and other appliances with electric motors require high starting power); when inverters experience such spikes, they can endure the increased power for a short period of time before shutting down in order to prevent any damage being done to them. Low-frequency inverters have much greater peak power capacity to handle large loads with power spikes than high-frequency inverters. In fact, low-frequency inverters can operate at the peak power level which is up to 300% of their nominal power level for several seconds, while high-frequency inverters can operate at 200% power level for a small fraction of a second. The second main difference is reliability: low-frequency inverters operate using powerful transformers, which are more reliable and sturdy than the high-frequency inverter’s MOSFETs, which use electronic switching and more prone to damage, particularly at high power levels.

In addition to these qualities, low-frequency inverters come with a wide range of technical features and capabilities which most high-frequency inverters lack; these include a built-in battery charger; UPS (Uninterruptible Power Supply) functions; by-pass mode with no battery connected; power saving mode; various charge settings (like different battery types and charging voltages).

In terms of other differences, low frequency inverters are designed for large off-grid power systems and are more suitably equipped for powerful appliances; therefore, they are typically within the high power category of invertor, with their power levels normally within the thousands, typically 2000W-3000W and above (high frequency inverters are also available in lower power categories such as 300W, 600W, 1000W, 1500W etc.) In addition, in most cases low frequency inverters do not include mains power sockets – they come with terminals where AC wires should be connected which then connect to mains sockets.

Low-frequency inverters are not ideal for everyone; they’re very large and are considerably heavier than high-frequency inverters, and would be best suited for those who either are building an off-grid power system with no significant power restrictions, or who run powerful appliances and devices with electric motors like power tools, washing machines, vacuum cleaners and air conditioners. Low-frequency inverters are also best suited for those who want to power various kitchen appliances such as refrigerators, microwaves, dishwashers and ovens.



Specification:
JN-L 30112 35112 50112 70112 70124 10224 15224 15248 20248
Rated Capacity(W) 300W 350W 500W 700W 700W 1000W 1500W 1500W 2000W
Battery 12V/24V 24V/48V
Product Size(D×W×H 345×210×122 365×142×200 405×180×320
Carton Size(D×W×H 385×270×185 396×190×240 460×240×380
N.W.(kg) 6 7 8 11 11 13 18 18 20
G.W.(kg) 7 8 9 12 12 14 19 19 21
Specification
JN-L 30224 30248 40248 50296 70296 702192 103192 153192 203192
Rated Capacity(W) 3000W 3000W 4000W 5000W 7000W 7000W 10000W 15000W 20000W
Battery 24V/48V 48V/96V 96V/192V 192V/220V
Product Size(D×W×H 425×200×335 465×245×465 485×300×655 600×300×730
Carton Size(D×W×H 490×290×410 530×310×510 570×390×730 670×380×930
N.W.(kg) 28 28 45 52 62 62 68 108 113
G.W.(kg) 29 29 47 60 72 72 78 121 126

 

Parameter:
Input Voltage 145V275V
Frequency 45Hz65Hz
Output Voltage 110V±2%  or 220V±2%(Battery mode)  
Frequency 50Hz±0.5 or 60Hz±0.5
Output Waveform Pure sine wave
Total Harmonic Distortion
(THD)
≤3%
Battery Recharge Current  10AAdjustable
Display LCD
Transer Time  ≤4ms
Enviorment Noise ≤55dB
Temperature 0℃~40
Humidity 10%90%(no condense)
Efficiency ≥80%
Protection Over-load Overload exceeds 110%automatic shutdown in 30 secsOverload exceeds 120%automatic shutdown in 2 secsUnder mains supply mode, it will not shutdown if overload, just keeping sound.
 short-circuit  Output short-circuit,automatic shutdown after keeping sound 20 secs 
battery  high or low voltage protection
Reverse polarity  reverse polqrity protection(optional
Alarm  A Without alarm sound if work normally under mains supply mode,when mains supply cut off, turn into battery mode,keeping sound 4 times every 30 seconds.
B Keeping sound every seconds for second time alarm of Battery low voltage; send out sharp sound under machine fault.
C Keeping sound every seconds under Overload 
Note All specifications are subject to change without prior notice                                                              


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Subject : Low frequency pure sine wave power inverter 300W-20KW

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