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Digital Sine Wave Inverter Manual 1. INTRODUCTION: A typical energy system include solar photovoltaic, storage battery, inverter and controller. An inverter converts direct current (DC) into alternating current (AC) by electronic means and makes renewable resources and energy source into higher-voltage AC power required for many residential, commercial, and industrial applications. Digital Sine Wave Inverter is based on the high speed Digital Signal Processing (DSP) chip and Industrial Microprocessor technology. It has the complete functions to control the overcharge and discharge of storage battery, outputs the pure sine wave electricity. It supplies the power for the communication of remote territories, broadcasting, television and household. It is high automatic, stable ability, full functions, complete protection and easy maintenance. It achieves entirely design on output and input control and power rate transform, solved the problems in simulation and circuit design, like weak anti-jamming, weak control precision, high power expending and weak coherency. 2. THE MAI N FUNCTIONS & CHARATERISTICS: A. Adopt high-speed single DSP chip control, the function is more stable, large capacity FLASH saving technique, the product can be on-line and get the technical upgrade without cost. B. AC insulated feedback and high-speed PI adjusting control, output AC voltage precision and stabilization, dependable loading and unloading. C. The whole machine carries out the total digital, automatization. D. Low power consumption design shows the importance of solar application. E. The protection function is more perfect; Over charge, over discharge and over voltage protection, over load and short circuit protection, charge connation reverse protection, the battery open circuit protection, over heat protection (optional). 3. MAIN TECHNICAL PARAMETERS: 1) Working Mode: SPWM Pulse Width Modulation 2) Wave Form: Pure Sine Wave 3) Rating Input Voltage: 48VDC 4) Highest Input Voltage: ≤70V 5) Working V oltage Range: 43.2 ~64V 6) Rating Input Capacity: 3000VA 7) Rating Output Power Rate: 2400W 8) Overload Protection Time: 10S/150% 9) Output Voltage: (AC) 220V ± 3% 10)Frequency: 50Hz ± 1% 11)Power Rate Complication Factor: 0.8 12)Distortion Rate of Wave Form: 3% (linearity load) 13)Low V oltage Protection Value:: ≤43.2V (±1%) 14)Auto-Cut-Off V oltage: ≤43.2V or ≥64V (±1%) 15)Auto-Resume V oltage: ≥49.2V or ≤60V (±1%) 16)Operating Condition (Temperature Range): -25℃ ~50℃ 17)Operating Condition (Humidity Range): 0 ~ 92% 18)Operating Condition (Altitude): ≤5000M 19)Net Weight: 42KG 4. INSTALLATION AND USING: Please connect according to the INDICA TION on the front panel and back panel. Make the switch of the inverter OFF, connect to the storage battery first, then connect to the solar panel. Connect the ports on back of the inverter case to the “+,-” poles of the storage battery accordingly. Please make sure the “+,-” poles are not reversed, and avoid the short circuit. The electrical wire should be copper core more than 16MM² and fixed tightly. (The section acreage of copper core wire should be more than ≥Φ1MM² per 5A current, and the screws should be fixed) Before the connection to the storage battery, please cut off the OPEN CIRCUIT PROTECTION. And after the connection, please joint the OPEN CIRCUIT PROTECTION, the system will be prolong one second, then the relay will be shut. Then, turn on the switch on the front panel, start up the inverter. Don’t use the inverter under overload. It needs to put down the power rate of the inverter when with capacitive load and inductance load, use more than triplicate power rate inverter to load the motor. The output on the back is 220V AC, uses for some high AC power loads. 5. WARNING: A. High voltage ins ide, please put inverter in safe places, to avoid lighting strike. B. Don’t turn off the loads under full loading. Please turn off the loads one by one or turn off the switch of inverter. Cut off the power when not using, to save electricity. C. The inverter doesn’t have the repair ability, please don’t open the case, it may change some capacities. D. It heats in working, please put it in dry place. Avoid damp or acid/alkali gases. Keep safe distance to other heat source or inflammable and explos ive materials. E. When the load is over 2000W, please connect to the AC 200V on the back of the inverter. 6. PROBLEMS AND SOLVING: A. Problem: Short circuit LED lights or overload LED lights first, then short circuit LED lights. Solve: Cut off all loads, solve the short circuit problems on loads then restart. B. Problem: Overload LED lights, no outputting. Solve: Put down the load to rating output power rate, then restart. C. Bias voltage LED lights, no outputting. Solve: Over low or over high voltage of storage battery. D. Over hot LED lights, no outputting. Solve: Please check the blowhole and operating conditions. If the environment temperature is too high, please put down the power rate of the loads. SHENZHEN LONGRICH INDUSTRIAL CO., LTD
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