The power factor is the ratio of real power to apparent power and shows how efficiently electrical energy is used. Ideally it is close to 1. In UPS systems a high power factor is critical, because it makes better use of the UPS's available power and reduces the risk of overload.
Yes, with hybrid systems that combine an inverter, a UPS and solar (PV) panels for full energy independence.
Use a UPS, an AVR and surge protection power strips with surge filters.
Single-phase power (230V) is traditionally used in homes and covers the basic needs of a residential installation. Three-phase power (400V), on the other hand, offers more power and stability for high energy demands, such as heat pumps, EV chargers and so on.
When there are frequent fluctuations or surges in the area, especially to protect sensitive devices.
It can cause electric shock or fire. Residual current devices (RCDs) protect against these situations.
All UPS units are covered by a 24-month warranty from purchase and batteries by 12 months, with the warranty registration form completed within 10 days of purchase and a copy of the invoice. The warranty can be extended with a maintenance contract.
All Tescom Hellas UPS series run 24/7 with no need to switch them off.
It depends on use and environment. A 10°C deviation from 15-25°C halves battery life. We recommend replacing the batteries every 3 years.
Voltage fluctuations and grid failures can cause damage, data loss or system failure. A UPS supplies power from its batteries, giving you time for a safe shutdown, for a generator to start, or for power to return.
Depending on its type, a UPS protects your loads from: loss of power (power outage), overvoltage (short- or long-term), frequency variation, switching transients (momentary interruption), harmonic distortion, and noise (electromagnetic interference).
Depending on its type, a UPS can tell you about: battery status and charge level, input and output voltage, voltage fluctuations, the need to replace the battery, and a fault in the UPS. This information is shown through indicator lights or audible warnings.
Choosing a UPS with the right power rating takes two simple steps: 1. Check the power rating on the label of each device you want to protect/back up, find its power in VA, and add up the power of all the devices together. If the power is given in watts or amperes, you can easily convert it to VA with these formulas: VA = 1.43 x W (when watts are given), VA = 230 x A (when amperes are given). 2. Choose a UPS with a power rating at least 30% higher than the load you need to back up, to ensure reliable protection.
You can take them to authorized recycling points for electronic equipment and batteries.
Worn batteries, inverter failure, poor cooling, overload, or incoming voltage outside specification.
A pure sine wave output closely matches the quality of utility power. It is essential for sensitive devices such as medical or telecommunications equipment.
We recommend checking the condition of the batteries and the UPS status indicators every 6 months.
UPS units support home, office and industrial equipment (computers, router-modems) as well as critical loads (medical equipment, laboratories, data centers).
Small UPS units that plug into a standard wall outlet can be installed by the user by following the manual. Larger units require certified, specialized personnel.
Because the input/output cables cause electromagnetic interference, we recommend keeping some distance between the UPS and sensitive devices (e.g., medical equipment) to avoid interference.
Tescom UPS units are designed for minimal noise (in decibels) in spaces where people are present.
Before first use: charge for at least 8 hours. After first use: a full charge takes 4-6 hours, depending on capacity.
There are two scenarios: 1) UPS overload → degraded operation; avoid it by choosing the right specifications and watching the indicators. 2) Battery discharge → reduced runtime. Charge for 8-9 hours before first use, then for 4-6 hours, and recharge immediately after a full discharge.
We recommend operating at 15°C-25°C with humidity below 95%. The official limits are 0°C-40°C, but room temperature (e.g., with air conditioning) is ideal for maximum battery life.
Line Interactive UPS: affordable, with a short transfer time (ms) and a simulated sine wave output. Online UPS: zero transfer time, pure sine wave output, and strong voltage regulation for sensitive loads.
Surge protection strips, also known as surge arresters, protect your equipment from voltage surges (spikes or overvoltages). However, they cannot protect against undervoltages or complete grid failures, they provide no runtime, they have no voltage stabilizer, and they do not filter noise. So a UPS and a surge arrester serve different needs.
Runtime is the time the UPS gives you to save your data and shut down your devices, from the moment the UPS starts supplying power. For example, a 1000 VA UPS with a runtime of up to 10 minutes (at 50% load) can power 500 VA of equipment for 10 minutes. For demanding needs, runtime can be extended by adding batteries and an extra battery cabinet.
A UPS (Uninterruptible Power Supply) is a device that provides uninterrupted power to your electronic equipment (the load) during voltage fluctuations or a complete power outage. It gives the connected load protection and backup runtime.
It is the ability of the UPS to switch on and power devices even when there is no utility power, using only the battery.
Some models can run temporarily without batteries, in bypass mode only, but they offer no protection against power outages.
Yes, there are special models with an IP rating for resistance to dust, humidity and temperature changes.
Calculate the total load (in VA) of all the devices and choose a UPS with at least 30% more power for safe operation.
It is the mode in which the load is powered directly from the utility supply, without using the battery or the inverter.
Yes, as long as the generator provides stable voltage and frequency. Some UPS units have dedicated settings for working with generators.
It is the time it takes for the supply to switch from utility power to the UPS battery during a power outage. In Line Interactive UPS units it is short, while in Online UPS units it is zero.
Single-phase UPS units are used mainly in residential and small business applications, while three-phase UPS units are designed for larger loads, such as in industry or data centers.
Racks are where passive equipment (patch panels, cables) and active equipment (servers, UPS units, routers) are mounted and stored. They provide easy access, protection from damage and smooth operation, and are suitable for both professional and home settings.
Rack cabinets are covered by a 5-year warranty from purchase, accessories by 8 years, and fans and power strips by 12 months, with the registration form completed within 10 days and a copy of the invoice. Otherwise, the warranty starts from the date of sale.
Yes, such as patch panels, shelves, power strips, cable organizers, fans and grounding kits.
Yes, there are rackmount UPS models specially designed for installation in rack cabinets.
These are racks with an internal frame or panel that can swing out, making it easier to reach cabling and connections.
Height in U is the unit of measurement for the equipment mounting height available in a rack. 1U = 4.45 cm.
A standardized 19'' width, metal construction, ventilation openings or fans, equipment mounting rails measured in U of height, and the option to lock it.
STS units come with a 12-month warranty, with the warranty registration form completed within 10 days of purchase and a copy of the invoice. Otherwise, the warranty starts from the date of sale.
An STS powers loads without interruption by switching automatically between the main line and the backup line with zero transfer time. It has overload and short-circuit protection.
AVRs are covered by a 24-month warranty, with the warranty registration form completed within 10 days of purchase and a copy of the invoice. Otherwise, the warranty starts from the date of sale.
An AVR keeps the voltage stable by filtering out fluctuations and noise, but because it has no batteries it provides no runtime during a power outage.
Yes, and in fact it is common: the AVR is installed upstream of the UPS, giving it a more stable input.
An AVR works electronically and responds faster, while transformers are slower but provide isolation.
Yes, provided it has the right power rating. Be careful with loads that have a high inrush current.
In areas with frequent overvoltages or undervoltages, it protects devices by keeping the input voltage stable.
The main types are electronic (relay-type) and servo motor (more stable voltage regulation).
Yes, they include scheduling, remote control and monitoring through apps.
At very high or low temperatures, charging may be delayed for the safety of the system.
It is a wall-mounted EV charging station, ideal for home use, with power from 3.7 to 22 kW.
Yes, but it requires agreement with the building management, sufficient power from the grid, and approval/a design study from an electrician.
They refer to different levels of communication and safety between the charger and the vehicle. Modes 3 and 4 are more modern and safer.
AC chargers are slower and suited to home use, while DC chargers are fast chargers for public installations.
Yes, these are inverters that also support energy storage in batteries, ideal for off-grid or backup applications.
Typically 10-15 years, depending on operating conditions and maintenance.
The minimum voltage required for the inverter to start operating.
It lets users consume the energy they produce and feed the surplus back into the grid.
String inverters serve several strings of panels, while micro-inverters are installed on each panel for better performance in shaded conditions.
Maximum Power Point Tracking is a technology that optimizes the energy produced by solar (PV) panels.
In a cool, dry environment. They should be recharged every 6 months to avoid deep discharge.
Yes, if the UPS supports connecting external batteries through a battery pack or battery cabinet.
It is the natural loss of charge when the battery is not in use. For AGM batteries it is 2–3% per month.
No. Car batteries are designed for a brief, powerful start, not for steady discharge.
Batteries of ≤28 Ah have a 12-month warranty and those of >33 Ah have 24 months, with the registration form completed within 10 days and a copy of the invoice. Otherwise, the warranty starts from the date of sale.
VRLA AGM batteries are rechargeable lead-acid batteries, widely used in UPS units and demanding applications (cars, solar PV systems, medical equipment, etc.).
It means using the battery until it is almost completely empty. It can cause irreparable damage.
Excessive discharge permanently reduces capacity and increases internal resistance.
It depends on the type; typically 300–800 cycles for VRLA AGM.
The ideal temperature is 20–25°C. Higher or lower temperatures shorten battery life.
AGM batteries have lower internal resistance and deliver higher power, while GEL batteries have a longer cycle life.
Depth of discharge shows how much energy has been drawn from the battery relative to its total capacity.
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