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Home > Technical Support > FAQs

What is an UPS?

The optimal solution universally adopted is to store energy in a battery. Being able to get a continuous supply of alternating current to convert the direct current of the battery goes into an alternating current of the same features as the commercial power supply, but without interruption.

When all the elements of this solution are integrated on a single equipment, this is what is called UPS, which stands for Uninterruptible Power Supply. There are several structures UPS, with various technologies of its components

What UPS technologies are available?

The UPS are encompassed in different technologies: Off-Line, Line-Interactive and On-Line.

The parameter that marks the different technologies is if the batteries allow (or don’t allow) power directly from the mains to the loads. In off-line technologies and Line-Interactive UPS acts only on failure of supply, while in the case of On-Line technology, the load is supplied energy continually generates itself, exists or no power.

What are custom-made solutions?

For the purpose of meeting your needs by adapting to your business, Salicru has adopted flexibility as one of its principles, offering you custom-made solutions based on the standard series technologies.

Our solutions always have their own development as those existing on the market do not usually uniformly meet the needs of each company. They also go through the most rigorous quality controls in order to guarantee that the solutions offered comply with the needs and expectations of its customers. 

Salicru’s Custom-Made Solutions adapt perfectly to your environment so that your investment is guaranteed

What are DC systems?

DC systems are those units that convert alternating current in continuous (rectifiers, chargers) or a direct current to alternating (inverters). DC systems can store energy in a battery. It’s able to obtain a continuous supply of DC or AC (via an inversor) without interruption.

When the rectifiers, chargers and investors are integrated into a single team, they constitute what is called a DC system, allowing both connect to AC power loads such as DC. 

Furthermore, these DC systems have a DC control to manage all parameters and communication ports to communicate with the outside world, allowing inclusion within the DC system management software and perform remote management and allowing the state to be informed / alarms / events / actions of the unit.

Is it advisable to use a UPS with a laser printer?

The functionality of a UPS consists in providing auxiliary power for the purpose of preserving precious data. With a laser printer, in the event of a mishap in the electrical supply, the printing tasks remain queued in the print spool and are naturally recovered once the mishap is gone. Nevertheless, for large printing cycles involving publishing houses, graphics and copiers in general, it is best to protect the data in order to cushion the large data transmission time to the printer memory./td> 

For my business, the PC is a fundamental tool. Do I need a UPS?

The Uninterruptible Power Supply Systems (UPS) are not, necessary, but rather basic. Security needs demand that we protect our systems exhaustively. More and more, information technology systems are an essential element of the company in all areas.que la fomenten. 

What exactly is Off-Line technology?

Off-Line is the simplest protection. The PC continues to receive power through the electrical network but without energy conversion. In the event of a problem such as power outages or voltage changes, the UPS is supported by batteries in order to stabilize the voltage. The use of this technology is appropriate for the protection of PC’s, work stations, passive terminals and low range servers.

What exactly is Line Interactive technology?

These devices operate in exactly the same way as Off-Line. The difference is that the UPS is totally controlled by means of a micro-processor which studies and analyzes the quality of the electrical network and detects the variations in said network without the need for batteries when it is not absolutely necessary. Through this technology, early wear of the batteries is prevented. The most common use of these UPS's is the protection of PC servers, Intranet servers and Internet Networking equipment.

What exactly is On-Line technology?

This technology is mainly characterized by a constant quality of power supply throughout any disturbance or fluctuation. An On-Line UPS does not constantly supply energy from the batteries, but rather the current is regenerated through the transformation of the alternating current to direct current and vice versa. In this way, it is possible to isolate the load of any fluctuation in the input current. The most standardized use is the protection of Internet/Intranet servers, and the protection of telecommunications and industrial systems.

What is the difference between SAI and UPS?

SAI is the Spanish acronym for Sistema de Alimentación Ininterrumpida. UPS is the English acronym for Uninterruptible Power Supply.

How important is the output crest factor parameter for a UPS?

The definition of a crest factor is the relationship between the surge current and the RMS current as it leaves the UPS. The crest factor for a resistive, capacitative or inductive lineal load or a combination of any of the three, is SQR[2]=1.41. However, for non-lineal loads, the crest factor is much higher and in some cases can even be higher than 2.5. A UPS that can provide crest factors of around 3 is a unit which is capable of providing a power supply for almost all of the loads that are currently on the market. The higher said parameter is, the better said UPS will handle non-lineal loads.

Which UPS do I need for my computer system?

If your IT system is made up 4 computers, without a monitor, an approximate consumption of 300 VA per unit can be calculated, therefore, you must multiply the 4 computers by 300 VA each, whenever you do not have a monitor, a total consumption of 1200 VA is obtained.

How do I measure the UPS I need?

First determine the VA power of the devices you wish to protect: First Option: we know the consumption in Watts: divide by the Cos phi or Equipment Power Factor and you will obtain the VA power. Second Option: we know the consumption in Amperes: multiply by the voltage V and divide by the Equipment Power Factor and you will obtain the VA power. Third Option: we know the type of equipment and the quantity to be protected: Ex: 3 PC’s + 2 Printers + 1 Server + ... Add the power supplies (in VA) of the equipment to be protected. Look at the selection table and determine the time of capacity range needed for the application.

What is the capacity range in power equipment?

Capacity range is the time the loads can continue to feed from when there is no network or it is under the minimum voltage, for which the battery is still charged. You must measure at nominal power.

What is meant by "noise"?

Electrical noise, of course. Electrical noise, occupies a range of frequencies which are similar to the transitory ones, however these are at a low magnitude, but are long-lasting. An example would be the induction of radio waves on a transmission line. The noise phenomenon often causes more operation errors than physical damage.

What type of energy outages exist?

As far as energy outages, there are four possible types: dropouts, collapses, momentary collapses and sustained collapses; <1 cycle, >1 cycle, < 1 minute and >1 minute, respectively. The main causes are usually the start-up of large motors, defects in the line or switching on the network, which come from the company. In the case of dropouts, it depends on the characteristics of the power source (reserve time) whether or not it will affect the IT system, computer or electronic equipment. Outages and collapses are network zeros with durations higher than 300 mx, eventually causing a total uncontrolled stoppage of the equipment. Micro outages often affect the file localization tables and RAM memories, a typical error is that the hard drive becomes illegible. The only solution to this type of problem resides in the use of a UPS.

What percentage of energy problems actually occur?

Every year in any given office building, there are 36 power surges, 128 overloads or voltage rises and between 5 and 15 outages. All of these energy problems are mainly caused by a loss of data, and one solution is the protection of an Uninterruptible Power Supply System (UPS).

What does the zebra effect in lighting consist of?

Frequently, but fortunately it happens less all the time, the lighting lines of large avenues would leave one illumination point active and another shut off, successively. This type of installation, which is totally plausible, is still a way to save energy, but after certain testing, it was proven that besides being dangerous, it was damaging to drivers eyesight as it created a considerable light and shadow blinding effect and it was verified that in these illuminated areas with this type of solution, there were more than the average number of accidents. This is what is known as the zebra effect.

I would like to know if an inverter and an undulator are the same.

Yes, both terms refer to the same solution, you can say DC-AC inverters or undulators.

What is the purpose of an inverter?

An inverter converts direct voltage from batteries or direct bus to alternating voltage, normally 220 Vca with output stabilization and in the form of a 50 Hz sinusoidal wave. This wave is often cleaner that the one obtained from the electrical network. The sinusoidal inverters are used to supply all kinds of load, whereas the "square", "pseudo sinusoidal" or "modified sinusoidal" wave shape has certain limitations given its effect on inductive or capacitative loads. It is also important to mention that the noise or interference that can cause equipment such as precision instrumentation, telecommunication, etc. to function incorrectly. The main advantage is the price as it is often less than half what a sinusoidal device would cost for similar power.

What format do inverters come in?

Inverters come in a box format as well as a 19” rack format.

What is the purpose of galvanized isolation in an inverter?

The galvanized isolation built into the converter separates the input circuit from the output circuit, this enables polarity changes or the collection of floating outputs.

What is a battery?

A battery is a device that allows us to store energy through a group of electrochemical cells. A modern battery is made up of a group of cells or vessels, generally 2V. The most frequent configuration is to work with 6 2V serial blocks in order to get 12 nominal V. It’s best to distinguish between rechargeable batteries (accumulators) and disposable batteries (batteries). The most common of the first type, or accumulators, are made of Lead Calcium (PbCa), are sealed and require no maintenance and those made of Nickel Cadmium (NiCd), are open and require maintenance.

When you refer to SALICRU, you mention that they are power electronic specialists, what does this mean?

Power electronics is the division in electronics which is dedicated to the control and conversion of power energy. Alternating/direct, direct/alternating, and direct/direct converters are grouped into this division, just like rectifiers, inverters, DC/DC converters, etc. For this reason, SALICRU is a specialist in power electronics because it researches, develops, manufactures and commercializes a wide range of products within this sector in order to ensure a clean, safe, reliable, economic and ecological power supply.

What does kVA mean?

kVA is the abbreviation for Kilovolt-Amperes (VA). The power is breaks down like this: • Apparent power S: measured in VA • Active Power P: measured in W • Reactive power Q: measured in VAR • S= P + Q • P= S * cos (fi) The most-widely used power measurement in the world for UPS’s is apparent power (S) measured in VA or kVA.

What is Alternating Current?

Alternating Current (AC) is the electrical current that changes polarity. That is, its instantaneous voltage changes in time from 0 to a positive maximum, returns to zero and continues to another negative maximum, and so on. The standardized Alternating Current is a type of sinusoidal wave. The commercial supply of electrical energy generally used today, is done in alternating current (AC).

What is Direct Current?

Direct Current (DC) is the direct flow of electricity through a conductor between two points with different potentials. As opposed to Alternating Current, in this case, the electrical charges always circulate in the same direction from the greatest point of potential to the lower potential. Although Direct Current is often identified as constant current (for example, that which is supplied by a battery), any current that always maintains the same polarity is considered direct.

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