How to Maintain a Voltage Stabilizer?

This article will show you how to maintain a voltage stabilizer for longer life.

Avoid violent vibration, prevent the inflow of corrosive gases and liquids, prevent irrigation and place the stabilizer in a ventilated and dry place, and do not cover the fabric to hinder ventilation and heat dissipation.

Please use a three-plug (grounded) socket, and the grounding screw on the machine should be properly grounded, otherwise, there will be a live phenomenon when using a test pen to test the machine. eliminate. If the machine has serious leakage and the measured insulation resistance is less than 2MΩ, it may be that the insulating layer has been damp or the line is short-circuited with the machine. The reason should be found out and the fault should be eliminated before use.

0.5~10kVA low-power voltage stabilizer uses fuse for overcurrent and short circuit protection, and 12kVA~50kVA voltage stabilizer functions as a DZ47 circuit breaker for overcurrent and short circuit protection. If the fuse is often blown or the circuit breaker is often tripped, check for excessive power usage.

When the output voltage exceeds the protection value (the phase voltage protection value is adjusted to 250V+5V at the factory), the regulated power supply will automatically protect, cut off the output voltage of the regulated power supply, and at the same time the overvoltage indicator light will be on, the user should immediately shut down to check the grid voltage or If the voltage stabilizer is automatically powered off (with input but no output), check whether the mains voltage is higher than 280V. If it is lower than 280V, check whether the voltage stabilizer is faulty. Use it after finding out the reason.

If the output voltage of the voltage stabilizer deviates more from 220V, please adjust the potentiometer on the control board until the output voltage is normal (the input voltage cannot be adjusted if it does not reach the voltage stabilization range).

When the mains voltage is often at the lower limit (<150V) or upper limit (>260V) of the input voltage of the voltage stabilizer, the limit micro switch is often touched, which is prone to control failure. At this time, the voltage stabilizer can not be adjusted or can only be adjusted up (or only down), and you should first check whether the microswitch is damaged.

Please keep the inside of the machine clean, dust will hinder the rotation of the gear and affect the output voltage accuracy. Please clean and maintain the contact surface of the coil in time. When the carbon brush is seriously worn, the pressure should be adjusted to prevent the contact surface between the carbon brush and the coil from sparking. The carbon brushes should be replaced when the length is less than 2mm. When the coil plane flashover is blackened, sand it with fine sandpaper.

The input terminal of the three-phase voltage stabilizer must be connected to the neutral line (neutral line), otherwise, the voltage stabilizer will not work with normal load, and the voltage stabilizer and electrical equipment will be damaged. Do not use the ground wire instead of the neutral wire (but the neutral wire can be connected in parallel), and the neutral wire must not be connected to the fuse.

When the output voltage of the voltage stabilizer is lower than the rated voltage (single-phase 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 when loaded, this is because the input line surface is too small, or the load end exceeds the rated capacity range of the voltage stabilizer, the line voltage drop is too large under load, and the input voltage is lower than The lower limit of the adjustment range of the voltage regulator should be replaced with a thicker input wire or the production capacity should be increased.

When the power of a single load is large (such as air conditioners, etc.), and the input line is long and the road surface is insufficient, the voltage of the load is seriously reduced, and the load may be difficult to start; If the phenomenon of output instantaneously overvoltage and power off are occurring, it is not a fault of the voltage stabilizer, and the input line should be improved (the line should be thickened, and the length of the input line should be shortened as much as possible to reduce the voltage drop in the line).

When the output voltage of the voltage stabilizer has seriously deviated from 220V, it should be checked whether:

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