What should I do when my computer voltage is unstable?

If you are using computer to handle some important task,and the volt is continual undulate, for instance, 219 Volts and next second it will be 221Volts, 225Volts dumping to 233Volts, etc.

This problem will damage your computer PC but also even you replace the new PSU, the old graphic card is also permanently broken, let alone the volt fluctuation of the voltage would interrupt your computer data storage, make data lost.

Generally, when we encounter this difficult, we usually think of using UPS to protect from data losing.

But a new question is, how to protect the UPS voltage from fluctuations? So our optimal solution to deal with voltage instability is to buy a voltage regulator suitable for home equipment. Honle is a company specializing in the production and manufacturing of voltage regulator transformer and other power equipment, has more than 10 years of business experience, the business scope is mainly in Africa, Russia, Southeast Asia and other places.

What does a Voltage Stabilizer do? How does it protect your appliances?

Stabilizers (often termed as Automatic and Safe Voltage Regulators) are static devises to stabilize your utility voltage before feeding to the connected equipment. It recognizes the voltage fluctuations in the utility and regulates it internally to deliver a consistent range of output voltage, if your utility voltage is low; your stabilizer senses it, boosts it to the required level of voltage and then feeds to the connected equipment to work without troubles. This happens vice versa in case of a high voltage that appears in the utility line.

How can I choose a right sized stabilizer for my application? 

Selection of a right stabilizer suiting your applications is critical. The key areas to be considered critically are the nature, power consumption range of your application and the level of voltage fluctuations that are experienced in your locality. You need to know the rating of the equipment to be protected - the ratings are normally mentioned as KW, KVA or in Amps. You will also need to know the nominal line voltage and frequency.

How to choose the right voltage stabilizer?

Check the voltage, current & power rating of the device. It is written on the specification sticker near power socket else check the user manual.

For example, In India standard service voltage will be 230VAC, 50 Hz.

To get the maximum power - Multiply “230 x Max rated Current” of all the equipment that are to be connected to the stabilizer. Add a 20-25% safety margin to arrive at stabilizer rating. If you have plans to add more devices later, you can keep buffer for them.

You should also consider the surge current which flows when you switch on the device.

In case the voltage stabilizer has a rating in watts also, assume a power factor of 0.8 (W=V*A*pf).

The most important thing is to know the nature of the load connected to the stabilizer. First you must note down the power (or Watts) for all the appliances that will be connected to a stabilizer.

The sum total of the power consumption (or Watts) will give you the load on the stabilizer in watts. But most stabilizer sizes are in VA (Volt Ampere) or kVA (kilo Volt Ampere which is equal to 1000 Volt Ampere).

Although to get the actual VA (or Volt Ampere) from Watts (W) you will have to do some measurements, but to give a rough approximation, you can increase the Watts value by 20% to get the approximate VA size that you may need.So for e.g. if sum of Watts connected to your stabilizer is 1000 then you can take a 1200 VA or 1.2 kVA stabilizer. (Please note that 20% is suitable for residential systems and may not work in industries if your power factor is bad).

Usually a stabilizer comes with different working ranges (working range is the voltage range in which the stabilizer operates/stabilizes the input utility voltage and provides a desirable output voltage). It’s important to choose your stabilizer suiting the voltage fluctuations in your locality. Make an idea of the level of power fluctuations that are common in your location. (E.g. extremely low/high voltage areas, moderate high/low voltage area etc.).

You have to choose the working range of your stabilizers that will address the demands of your location. For instance, you might need to choose the stabilizer with a wide working range, if your location experiences extremely low/high voltage fluctuations.