1. Avoid violent vibration, prevent corrosive gas and liquid from flowing in, prevent from being irrigated and place it in a ventilated and dry place. Do not cover with fabric to obstruct ventilation and heat dissipation.
2. Please use a three-plug (grounded) socket, and the grounding screw on the machine should be properly grounded, otherwise the case will be charged with a tester. This is caused by the distributed capacitance induced electricity. It is a normal phenomenon and can be connected to the grounding wire. eliminate. If the case is seriously leaking and the measured insulation resistance is less than 2MΩ, it may be that the insulation layer has been damp or the circuit and the case are short-circuited. You should find out the cause and eliminate the fault before use.
3. 0.5 ~ 1.5KVA low-power LED regulators use fuses for over-current and short-circuit protection, 2 ~ 40KVA LED regulators use DZ47 circuit breakers for over-current and short-circuit protection, such as fuse often blown or circuit breaker Frequent tripping, should check whether the power consumption is too large.
4. When the output voltage exceeds the protection value (the phase voltage protection value is adjusted to 250V±5V at the factory), the stabilized power supply is automatically protected, the output voltage of the stabilized power supply is cut off, and the overvoltage indicator is on. The user should immediately shut down and check the grid voltage or Voltage stabilization. If the LED type voltage stabilizer has automatic power-off (input and no output), check whether the mains voltage is higher than 28OV. If it is lower than 280V, check whether the LED regulator is malfunctioning. Use after finding out the reason.
5. If the output voltage of the LED regulator deviates from 220V more, please adjust the potentiometer on the control board to the output voltage is normal (the input voltage cannot reach the voltage regulation range can not be adjusted).
6. When the mains voltage is often at the lower limit (<150V) or upper limit (>260V) of the input voltage of the LED regulator, the limit micro switch is often touched and control failure is prone to occur. At this time, the LED regulator cannot adjust the voltage or can only be adjusted up (or can only be adjusted down), first check whether the micro switch is damaged.
7. Please keep the inside of the machine clean, dust will hinder the rotation of the gear and affect the accuracy of the output voltage. Please clean and maintain the coil contact surface clean in time. The pressure should be adjusted when the carbon brush is severely worn to avoid flashover on the contact surface of the carbon brush and the coil. The carbon brush should be replaced when the length is less than 2mm. When the coil plane is burnt out, fine sandpaper should be used to polish it.
⒏The input end of the three-phase LED regulator must be connected to the neutral line (neutral line), otherwise the LED regulator cannot work normally with load and will damage the LED regulator and electrical equipment. Do not use the ground wire instead of the neutral wire (but the neutral and ground wires can be connected in parallel), and the neutral wire must not be connected to the fuse.
9. When the output voltage of the LED regulator is lower than the rated voltage (220V or three-phase 380V), check whether the input voltage is too low. When the rated voltage is reached at no load and the output is lower than the rated voltage at load, this is due to the input circuit load surface is too small, or the load end exceeds the rated capacity range of the LED regulator, the line voltage drop when the load is too large, use the input voltage If it is lower than the lower limit of the adjustment range of the LED regulator, you should replace the thicker input wire or increase the product capacity.
10. When a single load has a large power (such as air conditioners, etc.), and the input line is long and the load surface is insufficient, the voltage is severely reduced when the load is working, and the load may be difficult to start; when the load is working, it will stop temporarily, which is easy to happen The output is over-voltage and power-off at a moment. If such a phenomenon occurs, it is not a failure of the LED-type regulator. The input line should be improved (the line should be thickened, and the length of the input line should be shortened to reduce the voltage drop in the line).
11. When the output voltage of the LED regulator deviates from 220V seriously, check whether the input voltage is within the voltage stabilization range; ② whether the motor gear is severely worn and whether the rotation is flexible; ③ whether the limit switch is damaged: ④ whether the coil plane is smooth ⑤ Whether the control board is damaged
