12 large tube sine wave inverter 2000w to 6000w24 to 60v Power supply to 220V main board
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Motherboard interface Description
Switch: Connect a small switch to control the boot or standby
Indicator light: Indicates standby or on
Dc indication: connected to a DC voltmeter
Fan: Connect 12V0.2a fan
Feedback: Transformer high voltage end feedback back to the main board
Ac indication: connected to ac voltmeter
Notes:
1. The board has no input and anti-protection. Please ensure the input positive and negative poles are connected correctly
2. When using the ring transformer, the inductance must be in series at the low voltage end of the transformer. The inductance of 120A25uH can be used for 24V3000W board, and the price is 30 yuan each
3. When in use, 100A series air switch is required for input
4. Transformers shall be in conformity with the specifications. Leakage inductors on microwave transmitters and on microwave ovens shall not be used. This type of transformer cannot work normally and will cause damage to the main board. Before transformer installation, it is necessary to measure the no-load current at the 220 end of the transformer. If the transformer is larger than 0.3A, it shall not be used. A good transformer will generally have no load current of about 0.1a at 220V end.
The power of this product is pure sine wave circuit efficient and stable no load current small battery undervoltage/overload/overheat protection installation is simple.
See clearly the main board is the power frequency inverter main board needs to cooperate with power frequency transformer! Our board nominal is the actual power W is not VA, general conversion 1VA = 0.8W, transformer capacity is generally with VA to nominal!
The selected transformer should have a low no-load current. Don't leak too much. The no-load current of the ring transformer shall be less than 0.1a, less than 0.3a of EI shape, and less than 0.5A of mouth shape. If the no-load current is large or the leakage inductance is too large, the pipes will burn. For example, welding machines and line lamp transformers cannot be used (welding machines have high no-load current and leakage inductance, but the line lamp transformers have high no-load current). The transformer must be connected in series with ferro-si-Al magnetic ring inductors. The inductance combined with capacitance is to filter out the high frequency carrier component of SPWM, at the same time, it also has energy storage and plays the purpose of smoothing the waveform.
Recommended supporting transformer power: 12V power supply transformer of 6.5-7V to 220V 24V power supply transformer of 13-14V to 220V 48V power supply transformer of 26-28V to 220V 60V power supply transformer of 32.5-35V to 220V
Power frequency sinusoidal inverter features: instantaneous load capacity, not easy to damage, low temperature rise, no interference.
Power frequency sinusoidal wave inverter main board function description:
1. Battery low-voltage protection: When the battery voltage is lower than 10.5V per section, the inverter will turn off the inverter (no AC voltage output at this time), and the inverter is in standby mode.
2. Battery overvoltage protection: When the battery voltage is higher than 14.7V per section, the inverter will turn off the inverter and enter standby mode.
3. Normal automatic start of the battery: when the battery is under low-voltage protection, when the solar energy or wind energy charges the battery to 12V per section, the inverter will start automatically and output AC voltage to supply power to the load. When the battery overvoltage protection is restored to 14.7V per section after overvoltage protection, the inverter will also start automatically.
4. Temperature-controlled fan and over-temperature protection: when the inverter is working normally, the fan will not turn; when the temperature is too high, the fan will automatically run; when the temperature drops, the fan will automatically stop running. When the fan is damaged and the temperature is too high, the inverter will turn off the inverter and enter standby mode. When the temperature drops, it will automatically start the inverter and output alternating current.
5. Impact and short circuit protection: The inverter sometimes has real hardware current-limiting protection by wave, and software delay (400mS) short circuit protection plus power frequency isolation transformer. The reliability of the product is improved.
Motherboard adopts high power low resistance TO247 package big MOS tube power loss low electrolytic capacitor using high frequency low energy loss to ensure continuous power supply to ensure the stable MOS tube is not easy to damage the original installation import op-amp integrated circuit to ensure the protection circuit high quality PCB low calorific value of this motherboard are accurate and stable double 48 v power supply power to the measured 5000 w. The same motherboard with low voltage power supply is proportional to the decline of 5000VA
If the machine is equipped with a large no-load current, a series inductor is required at the low voltage end of the transformer (the ring transformer must be a series inductor).
Must have certain electronic technology and experience,If don't know any,please don't order!!!
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