Characters brief introduction

• Online interactive working design: High efficiency ,High power capacitor charge.
• Automatic adjust output frequency: Automatic tracking the input frequency and adjusting output frequency of battery inverter .When grid power is failure ,Converting the output frequency through panel switch.
• Digital interactive voltage regulate :Quick interactive transfer via adopting relay, Improving output voltage precision when wide input voltage range.
• Intelligent Digital control technology :Adopt 32 bit high speed micro controller to realize control circuit、parameter setting、operation management、advanced self-inspection and detection function ,connect with independent circuit of PCB to realize self-inspection and fault analysis .Adopt SPWM converter technology ,pure sine wave output ,satisfy with your requirements.
• High efficiency inverter technology :Adopt lowest internal resistance MOSFET as power change switch ,High inverter efficiency, more stable and reliable performance.
• Perfect protection features: input voltage, frequency overrun protection, surge voltage protection, over current protection, output short circuit protection, over temperature protection, battery overcharge and over discharge protection, etc.
• Intuitive LED status indicates: the workflow program status indication, be clear at a glance
• Humanized dynamic LCD display: large screen operation and data visual display, screen data query
• Output no-load protection function: when the battery inverter work, if lower output load it will automatically shut down after 5 minutes to realize no-load protection.
• High powered dynamic feature : Adopt instant control mode and effective value multiple control. Realized the high dynamic adjustment, and also reduce output voltage distortion degree.
• Intelligent battery management: Three stage intelligent battery charge, according to power supply environment to realize float charge and equalized charge convert, temperature compensation charge, discharge management so as to prolong the service life of batteries, reducing the burden of administrators.
• Intelligent self detection function :The microprocessor of system constantly online detection of power status, state of breaker, fuse status and all the circuit working condition, if fault it will be protected and alarm immediately notify the administrator.

Mainly specification ：

Model	HW-300W
Capacity（VA）	500VA/300W
Power（W）	Capacity VA×0.8
Working	Low frequency pure sine wave Solar Inverter
Phase	Single phase L+N+G
Input	230Vac（according to the order）
Input range	±25%
Input frequency	50/60Hz（auto）
Range	45Hz-55Hz
Solar input	12v—18vdc
Accuracy	±10%
Battery	Lead Acid battery
DC voltage	12V
Charger	Intellectual CPU control
Float voltage	14V0.1
Equalized charging	14.1V0.1
Temp principles	3mV/℃（each ）
Charger capacity	Total capacity * 20％
Output	single（L+N＋G）
Rating voltage	The same with input voltage standard
INV voltage	±1%（linear load）
INV frequency	50Hz，60Hz＜±0. 5%
Crest factor	>3：1
INV THD	Pure sine wave，linear load＜3.5%；non-linear load＜15%
Transfer time	2-4ms
Overload protection	capacity	Mains mode	Battery mode
	105%～125%	>10min	>1min
	125%～150%	>1min	At once
	>150%	At once
Input protection	Over voltage/under voltage、frequency
Output protection	Over current、short circuit
Battery protection	Over charger、over discharger
Temp protection	Inside temp over
Hardware protection	Fuse ，surge protection
Alarm	Muti- voice mode
Working	temperature：0～40℃，humidity 30%～90% ,EGL＜2000m（reduce 1% each 100m Max4000m）
Cooling	Force fan working
Communication	RS232
Safe standard	The max voltage input(or output) to ground 2000VAC，leakage current ＜3.5mA；insulation resistance >2MΩ（500VDC）