Maintenance Precautions For Voltage Stabilizer

Daily precautions

1. Avoid violent vibration, prevent corrosive gases and liquids from flowing in, prevent irrigation and place in a ventilated and dry place, and do not cover with fabric to hinder ventilation and heat dissipation.

2. Please use a three-pin (grounded) socket, and the grounding screw on the machine should be properly grounded, otherwise the casing will be charged when tested with a tester. This is caused by the induction of distributed capacitance, which is a normal phenomenon and can be eliminated by grounding. If the casing has serious leakage, the insulation resistance is less than 2MΩ, it may be that the insulation layer has been damp or the line and the casing are short-circuited. The cause should be found out and the fault should be eliminated before use.

3. 0.5 ~ 1.5KVA low-power voltage stabilizer uses a fuse for overcurrent and short-circuit protection, and 2 ~ 40KVA voltage stabilizer uses a DZ47 circuit breaker for overcurrent and short-circuit protection. If the fuse is often blown or the circuit breaker is often tripped, 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 voltage stabilizer automatically protects and cuts off the output voltage of the voltage stabilizer. At the same time, the overvoltage indicator light is on. The user should immediately shut down and check the grid voltage or voltage stabilizer. If the voltage stabilizer is automatically powered off (there is input but no output), check whether the mains voltage is higher than 28OV. If it is lower than 280V, check whether the voltage stabilizer is faulty. Use it after finding out the cause.

5. If the output voltage of Wide Range Voltage Stabilizer deviates from 220V by a lot, please adjust the potentiometer on the control board to a normal output voltage (the input voltage cannot be adjusted if it does not reach the voltage regulation range).

6. When the mains voltage is often at the lower limit (<150V) or upper limit (>260V) of the voltage stabilizer input voltage, the limit micro switch is often touched, and control failure is prone to occur. At this time, the voltage stabilizer cannot adjust the voltage or can only adjust it higher (or lower). Check whether the micro switch is damaged first.

7. Please keep the machine clean. Dust will hinder the rotation of the gears and affect the output voltage accuracy. Please clean and maintain the coil contact surface in time. When the carbon brush is severely worn, the pressure should be adjusted to prevent sparking between the carbon brush and the coil contact surface. Carbon brushes should be replaced when they are less than 2mm long. When the coil plane is burned black due to sparking, it should be polished with fine sandpaper.

8. The input end of the three-phase voltage stabilizer must be connected to the neutral line (neutral line), otherwise the voltage stabilizer cannot work normally under load and will damage the voltage stabilizer and electrical equipment. Never use the ground wire instead of the neutral wire (but the neutral ground wire can be connected in parallel), and the neutral wire must not be connected to the fuse.

9. When the output voltage of the voltage stabilizer 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 when unloaded and the output is lower than the rated voltage when loaded, this is because the input line load area is too small, or the load end exceeds the rated capacity range of the voltage stabilizer, the line voltage drop is too large when loaded, and the input voltage is lower than the lower limit of the voltage stabilizer adjustment range. At this time, a thicker input wire should be replaced or the product capacity should be increased.

10. When the power of a single load is large (such as air conditioning, etc.), the input line is long, and the load area is insufficient, the voltage is seriously reduced when the load is working, and it may be difficult to start the load; when the load is working and temporarily shut down, it is easy to cause instantaneous overvoltage and power failure of the output. If such a phenomenon occurs, it is not a voltage stabilizer failure, and the input line should be improved (the line is thickened and the input line length is shortened as much as possible to reduce the voltage drop in the line).

11. When the output voltage of the voltage stabilizer deviates seriously from 220V, you should check ① whether the input voltage is within the voltage regulation range; ② whether the motor gear is seriously worn and 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