Unit of battery capacity (Amps/hour).
Ratio between the output power of the UPS and the input power of the AC mains.
Unit of electric current.
An AVR or Automatic Voltage Regulator regulates the input voltage providing a stable output voltage.
Current to charge the battery, which is regulated at its input from the mains by the integrated circuit in the UPS.
Total loss of electricity. According to some sources, a voltage drop below 80V is considered a blackout since many equipment do not operate at those levels.
Regulator that adjusts the UPS voltage output. When the voltage is below normal conditions, the UPS boosts the output voltage. When the voltage is above normal values, the UPS buck (buck) the output voltage.
The UPS can start directly from the battery without being connected to the mains. It can also be called DC starting.
The UPS can communicate with a computer to allow the UPS to perform a controlled automatic shutdown of the computer. This is usually done when there is a mains failure and the battery capacity of the UPS is about to run out.
Ratio between the output power of the UPS and the input power of the batteries in battery mode.
Unwanted electrical noise during the use of a power supply or any other electrical or electronic device.
It is the fast battery charging system to shorten the charging time. In this case, the designer masters and uses high-tech charging system control so that the battery is not damaged.
The number of complete cycles per second. It is defined as Hertz (Hz). Electrical systems are divided into AC 50 or 60 Hz frequency.
Distortion of an electrical sine wave caused by the power supplies of some electronic devices. Mathematical representation of a distortion of a pure sine wave.
The user can easily change the UPS batteries without shutting down the UPS.
Intelligent battery management manages charging and discharging for longer runtimes and extended battery life.
Two circuits that are completely electrically separated with respect to DC potentials and almost always also with respect to AC potentials. In power supplies, it is defined as the electrical separation between the input and output paths of the transformer.
Term relating to the current flowing between AC supply cables and earth. It does not necessarily refer to a fault condition. In power supplies the leakage current refers to the 60 Hertz current flowing through the EMI filter capacitors that are connected between the AC lines and Ground (Y capacitors).
A manually operated switch used to bypass power to the UPS. When enabled, the service technician can repair it without interrupting the power supply.
The UPS will automatically shut down when there is a power failure and no loads are connected. The purpose of this feature is to extend battery life.
Cable for AC power supply to the UPS. They normally contain 3 wires Line-Neutral-Earth.
PF: Acronym for “Power-Factor”. Ratio between real or active power and apparent power in an AC circuit. In power conversion technology, the power factor is used in conjunction with the description of the AC input current to the power supply.
Total loss of mains power. Causes shutdown of all electrical equipment.
RFI: Radio Frequency Interference. It is the unwanted noise produced by a power supply or any other electrical or electronic device during its operation. In relation to power supplies RFI usually has the same meaning as EMI (see Electromagnetic Interference)
User-replaceable batteries allow you to easily replace the UPS batteries. Normally the lifespan of batteries is about 2 to 3 years.
A drop in voltage levels that can last from a few fractions of a second to hours. They can be caused by the connection to the power line of devices that have a high power consumption, such as tools, lifts, compressors, etc. It also happens when power companies deliberately provoke it to control peak load times. It can be detected by the flickering of the bulbs.