Electrical Protection

You can choose suitable servo controlled voltage stabilzer for incoming national supply.It will take care about voltage variations.If you dont get in your country ,you can get from India.

best of luck

lavurk

The best solution I suggest is buy a 160 kVA servo controlled voltage stabiliser and install at your main receiving . This will protect all your equipments and also you do not have to shutdown the plant due to power for voltage fluctuations. I did solve a similar problem by installing one manufactured by Automatic Electric which gave me trouble free service for many years and with improved production my pay back period was little more than a year.

http://www.aelindia.com/isite.htm

Definitely,

you need a voltage regulating device of suitable current carrying capacity. Single phase ones normally give 230V output from 180V - 280V input.

When power is as bad as yours it is generally very noisy too. So a voltage reulating device with an active tracking filter would be necessary. Sensitive electronic equipment is very sensitive to this.

Your choice is whether you need to regulate the three phase power, or just those phases as needed. For example for your computers you would need the full deal, but for motors and relays just voltage regulation would be adequate.

Regards......Ralph.

This is a product I have used successfully, for such users as Weta Workshops

http://www.vectek.com/index.php?option=com_content&task=view&id=3&Itemid=11

A good solution is to get a good UPS system which can take the voltage/frequency fluctuations to power a bank of batteries and capacitors. The UPS will have an output that is clean. There are several of these available from Marine contractors and are used on drilling rigs and ships that also have sensitive navigation and switch gear devices. Elgar is one manufacturer that I have experience with-especially running logging units in remote areas like Nigeria and Angola.