The power conditioner is intended for automatic control of tension, smoothing of pulse hindrances and protection of electronic devices against differences of tension. Standards assume giving in network of electricity with frequency of 50 Hz and voltage of 220 V, but in fact line voltage can change in quite wide limits. It quite often conducts to the output of the equipment out of operation. Selection of the stabilizer will help to cope with this trouble.
Instruction
1. Decide on that, you intend to buy the stabilizer of domestic or import production. The main selection criteria – the device has to have the certificate and to be provided with after-sales service.
2. If you have three-phase current network, you need the corresponding stabilizer. The three-phase power conditioner is necessary even in case you have at least one three-phase consumer. If all loading single-phase, use three single-phase stabilizers. It will allow to reduce the cost of the device and to avoid such feature of the three-phase stabilizer as shutdown of all device at disappearance of tension on one of phases.
3. Calculate the required power. Consider at the same time that the stabilizer can be installed for stabilization of parameters of tension both single device, and all object in general. Everything depends on specific requirements. It is necessary to count the total power consumed by loading. The power consumed by the specific device can be learned from the passport or the operating manual. Examine also back wall of the device, the supply voltage, frequency of network and the power consumed by the device is quite often specified there.
4. Counting power, consider the so-called ultimate power of the device. It is all power consumed by the electric device, consisting of active and reactive power. Ultimate power is always specified in the volt-amperes (VA).
5. Evaluate active and reactive load of the devices consuming the electric power. For some devices the active loading is the main characteristic (heaters, irons, electric stoves, glow lamps). If the specified power consumption of devices is 1 kW, for power supply enough 1 kVA stabilizer. With reactive load electronic and household appliances, devices with electric motors, etc. belong to devices.
6. When choosing the stabilizer be guided also by the size of starting current. Any electric engine at inclusion consumes several times more energy, than in normal operating mode. For fridges or submersible pumps increase passport power consumption by three to avoid stabilizer overload at the time of turning on of the device in network.
7. Choose stabilizer model with some stock from the power consumption of loading. You will provide these the sparing operating mode of the stabilizer and will increase life cycle, having created power reserve for connection of any new equipment.
8. In need of power supply of the difficult medical equipment and precise measuring tools it is desirable to buy the stabilizer with an accuracy of 3%. The lighting equipment (spotlights, searchlights, chandeliers) also should be connected via the stabilizer having the same accuracy. The stabilization accuracy is higher, the dispersion of voltage output and visible change of intensity of light at sharp differences of tension on entrance will be smaller.
9. Additional parameters which should be considered when choosing the stabilizer – operation principle, high-speed performance, security degree, set of functions.