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UPS Power Supply-related Power Terms Glossary (6)
- May 07, 2018 -

Ferroelectric transformer (FERRO): It is a transformer with ferrite as its main body. It can be combined with an external capacitor to generate resonance, so that the output power can reach the regulation effect. It is used in various types of early UPS. A transformer, but because of the bulky and bulky, and its precision is not high, so it is gradually being eliminated.



Bit: In the computer data, it is the smallest unit, only changes of 0 and 1.


Bytes: There are 8 BITS (bits) in one byte.


Maintenance time: For UPS, a capacitor designed to discharge when the mains power is off is designed inside the UPS. This discharge time is in the regulations set by CBEMA, and its discharge range can be from 8MS to 100MS.


Hours of safety (AH): One of the indicators reflecting the size of the battery, which is defined as the discharge time at the specified current. The same battery has a large capacity for a large number of hours, and a battery with the same number of hours has a large capacity for a high voltage. The battery capacity is usually shown in voltage and ampere hours, such as 12V/7AH, 12V24AH, 12V/65AH, 12V/100AH.


Lightning device: The device used to absorb lightning wave. The working principle is that a lightning strike generates a momentary high voltage into the circuit, causing the arrester to guide the lightning current and clamp the circuit voltage within the safe range. There are many types of components that can be used as lightning protection devices, such as varistor tubes. Note: Lightning strike voltage is a high-voltage discharge between the atmosphere and the earth. Therefore, a lightning arrester must be well grounded.


Firing wire: a small device that is overheated and blows, causes excessive current or blows the fuse when the load is short-circuited. This protects the power supply from damage caused by over-current and can also prevent serious damage caused by internal failures of electronic equipment. Therefore, each fuse has a rated specification and the fuse will blow when the current exceeds the rated specification. : If you use a fuse of the same specification that is not specified by the manufacturer, it may cause a malfunction of the machine, or cause fire on the line and endanger the safety. It is best to use the fuses of the same specifications as the original ones, which can protect the equipment as well as ensure personal safety.


Transformer: The use of electromagnetic induction principle, composed of iron core and coil, can be divided into two parts of the primary side coil and the secondary side coil, the side input voltage, the secondary side there will be an induced voltage output, so as to carry out the power transmission. The secondary side can provide a variety of voltage output, voltage, and buck functions, so the transformer can meet the power requirements of many different voltages in the circuit.


Pressure accuracy: refers to the relative change of the output voltage, which is a hundred fraction. The smaller the better. When the input voltage or load changes, the PS output voltage will also increase or decrease. The smaller the change, the higher the regulation accuracy.


Interrupted power supply: UPS [UninterruptiblePowerSystem(orSupply)]: A power supply device that can provide AC power in the event of a power outage by a battery pack, an inverter, and other circuits.


Has the following basic functions:


When the grid voltage is normal, the mains voltage is supplied to the load through the UPS regulator. The UPS with good performance is a good AC voltage regulator. At the same time, it also charges the battery in the battery and stores the reserve energy.


When the grid voltage is abnormal (undervoltage, overvoltage, power down, etc.), the inverter of the UPS converts the DC power of the battery pack into electrical energy to maintain the power supply to the load.


The UPS automatically switches between grid power and battery power to ensure uninterrupted power to the load. The general computer configuration has a small power interruption (switching time within 10ms), but precision computer equipment and communication equipment do not allow power to switch between 0ms), so you should confirm what you need the UPS switching time.


Power: The unit is VA, it is not absorbed by the load, so it is called reactive power. It forms another part of the apparent power. Low no power is good for improving the utilization of the power grid.


Firing wire: a small device that is overheated and blows, causes excessive current or blows the fuse when the load is short-circuited. This protects the power supply from damage caused by over-current and can also prevent serious damage caused by internal failures of electronic equipment. Therefore, each fuse has a rated specification and the fuse will blow when the current exceeds the rated specification. If you use a fuse of the same specification that is not specified by the manufacturer, it may cause machine failure, or cause fire on the line and endanger the safety. It is best to use the fuses of the same specifications as the original ones, which can protect the equipment as well as ensure personal safety.


Voltage drop: current through the line will lose due to line impedance, resulting in line pressure drop. Line pressure drop is proportional to the length of the line, and the cross-sectional area of the road is inversely proportional.


Backup power system: The original mainly refers to diesel generators, gasoline generators, etc. These were used as backup power equipment in the utility power when the early UPS did not appear. However, after the emergence of UPS, because UPS has more advantages, it has a rapid dynamic response and stable output. It can also eliminate the adverse effects of absorbing power supply and protect electrical equipment. As a result, UPS in modern standby power supply gradually accounts for a large proportion.


CPU: A micro-control unit that uses computer hardware and software technology.


Mode: The mode of the noise flow path. Any noise coming from the power line (HO is returned by NEUTRAL) is called differential mode noise. Any noise coming from the power line (HOT) or neutral line (neutral return from NEUTRA) is called common mode noise. The common noise path is not the common mode path or the differential mode path, so the noise of different paths is treated differently and eliminated by means of filtering and shielding.GBT: There are three levels, generally G, E, and C. The turn-on sum between E and C can be changed by adding a control signal between G and E. The IGBT is a voltage-driven device that has the high-speed switching characteristics of the MOSFET and the low on-resistance of the transistor. The protection device can absorb the high voltage of the input terminal, and it will cause damage when the electrical equipment is inserted into the wrong power supply or the power supply is suddenly large.The function of the varistor: protect the electronic components inside the electrical device.OSFET: There are three feet in total, generally For G, D, S, when the control signal is added between G and S, the conduction cut-off between D and S can be changed.The MOSFET is a voltage type driving device.


Press diode: When the reverse current is large enough, the reverse voltage of the device is stable at the nominal value, and the forward characteristic is the same as that of the diode. Power on: The uninterruptible power supply is turned on again after the utility power returns to normal. It can be manually restarted or set by software. After the UPS has generated protection, it reboots and acts as a reset.