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UPS Power Supply-related Power Terms Glossary (5)
- May 03, 2018 -

Transient Recovery Time: The time required for the output voltage to recover within the specified range when the load is abrupt (0-100%, 100%-0), typically in the millisecond (ms) order.


Filter: A device used to eliminate *noise, filtering the input or output to pure AC.


Shielding: The use of physical principles to isolate a means of blocking electromagnetic radiation.


Lightning strike tube: It is a kind of high voltage protection element used at the input end of the equipment. If the voltage at both ends is higher than its protection specification value, a short circuit will occur inside it and the input over-voltage will be absorbed.


APPARENT POWER: VA, whose power variation is absolutely related to RMS (ROOT-MEAN-SPUARE) voltage and current.


Data modem: This device is a device that converts an analog signal on a telephone line into a digital signal that can be read by a PC, or converts a digital signal of a PC into an analog signal to facilitate transmission over the telephone line.


Random Access Memory [RANDOMACCESSMEMORY (RAM)]: Stores the data required by the CPU in a dynamic manner.


SIMPLE MEWORK MANAGFEMENT PROTOCOL (SNMP): is a widely used network management protocol. It can help network administrators manage various devices in a TCP/IP network without complicated instructions. The basic concept is only FETDH. - STORE (storage - fetch) two kinds of instructions, simple, stable, flexible is its greatest advantage.


Instantaneous voltage drop: Some will last from a few milliseconds to hundreds of milliseconds. If the voltage drop lasts for a long time, it will cause the failure of the computer and the electrical appliances and the life expectancy.


Phase-locked circuit: A technical specification for the phase-locked speed, the principle is: When the input voltage enters the UPS, the UPS will control the frequency of its output power as the input power frequency, thereby achieving the same input and output frequency and phase The time difference is bad, but when the output frequency and the input frequency produce a time difference, the UPS is powered by the battery or does not output power to the load.


Three-phase: The standard power system is a three-phase power supply. The first phase is a glass sine wave and the phase difference is 120 degrees. The single-phase male is only one of the three phases.


Input voltage range: The range of UPS allowable power changes, the larger the range, the better the UPS adaptability


Neutral: In a single-phase power system, the function of the neutral line is the conduction feedback current, which is allocated in the same area as the socket end and ground.


Distortion: Distortion is divided into waveform distortion, voltage distortion, etc. Whether it is volume distortion or not, all are calculated by percentage. The magnitude of distortion is related to harmonics, voltage, current, and power factor. (Also refer to HARMONIC)


Mains power: that is, we say that alternating current (AC), alternating current includes: voltage, current, frequency three, the frequency can be divided into 50HZ (Hertz) and 60HZ (Hertz) two kinds of voltage distribution, from 100VA-240VA. The normal AC waveform is a sine wave, but the ladder waveform is similar to a sine wave. This waveform is not suitable for motors or inductive loads.


Radio frequency (RADIOFREPUENCY): This is electromagnetic, which exists in communication devices or computer-operated devices. Some sources are emitted by the device's line or antenna, and in some cases may be due to excessive amplitude. , And cause * electrical transmission interruption or computer operation equipment failure and other issues.


Synchronization: The output sine wave power generated by the UPS and the input AC power supply are sine waves, and the two must maintain the same frequency and phase. This is synchronization.


SYCHRONOUS: A converter between two power supplies and a load.


Inrush current: When the electronic device is connected to the power outlet, because the device has been shut down for a period of time, adding the power supply instantaneously will charge the capacitor in the current in the current, so it will generate a momentary high current of 3~10 microseconds, and The power cord releases its radiation and affects other electronic devices.


Surge: A transient high voltage, which can range from hundreds of volts (amps) to several thousand volts (amps) or more, and lasts from thousands of seconds to several hundred millionths of a second. Electronic equipment is a great potential hazard, which can result in the loss of data or the shortening of the life of electronic components, and can seriously damage the equipment or cause more serious consequences. There are two causes of surges: natural lightning strikes, such as: lightning strikes; and secondly, electronic equipment instantaneously adds load.


Surge suppressor: It can effectively absorb excess high voltage and over current generated by surge and maintain normal voltage and current supply to electronic equipment. It also reduces the hazard caused by surge and prolongs the service life. The generation of surge is Belong to even discovery, so the installation of surge suppressors for electrical equipment is necessary.


Note: At present, many products use surge suppression circuits instead of surge suppressors.