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Explanation of Power Supply Names Related to UPS Power Supply (1)
- Apr 26, 2018 -

Electrical line noise: refers to radio frequency (RFI), electromagnetic (EFI), and various other high frequency, motor operation, relay operation, motor controller operation, broadcast emission, microwave radiation, and electrical storm. Can cause noise. 


Frequency variation (frequency variation): It refers to the change of the frequency of the commercial power exceeding 3 Hz. This is mainly due to the unstable operation of the emergency generator or the power supply due to unstable frequency.


Brownout: The brownout of the mains voltage is lower than the rated value and lasts for a long time. The reasons for this include the start-up and application of large-scale equipment, the switching of the main power line, the start of a large-scale motor, and overload of the line.


Mains interruption (powerfai1): This refers to the interruption of mains electricity and lasts for at least two cycles to several hours. The causes are: tripping of circuit breakers on the line, interruption of mains supply, grid failure, etc.


SNMP: An abbreviation for Simple Network Management Protocol. Its significance is to allow computers and peripherals to connect directly to the Internet without computers, and let the network system manage them. High-end UPSs usually have an optional SNMP network management interface that allows the UPS to easily connect to the network.


IGBT: is the abbreviation of InsulatedGateBipolarTransistor. The IGBT is a kind of power crystal. The UPS designed by using this crystal can effectively improve the product performance, and has many advantages such as good power quality, high efficiency, low heat loss, low noise, small size and long product life.


Isolation transformer: It refers to the problems caused by instrumental equipment* or malfunction due to the zero-earth voltage of electrical characteristics when instruments and equipments are used together with general UPS. In order to avoid this kind of situation, some high-order UPSs are designed to deal with this problem. The design of a UPS with isolation transformer design, with special design and cooperation, can make the output zero-ground voltage less than 1 volt to avoid the above problems. In addition, it has functions such as noise filtering.


AVR: The abbreviation for AutomaticVoltageRegulation. AVR is the meaning of automatic voltage adjustment, that is, the UPS can adjust the number of turns of the internal output transformer or the power electronic component for the input voltage, so that the UPS has a wide range of mains input and stable output voltage characteristics.


Power regulation rate: The output voltage regulation accuracy when the input changes.


Communication protocol: The rules that are commonly observed when interconnecting devices exchange data.


SNMP: The abbreviation of Simple Network Management Protocol. It is mainly used for monitoring, troubleshooting, and controlling TCP/IP networks. It provides a simple network management protocol for user data programming.


Input frequency range: China's power grid standard frequency is 50Hz, UPS allows mains frequency has a certain range of changes, in this range, the UPS synchronously track the frequency of the utility, if it exceeds the local frequency output.