News
09
2021
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11
Explanation of power terms related to UPS power supply
Noise (electricallinenoise): refers to radio frequency *(RFI) and electromagnetic *(EFI) and other high frequency *, motor operation, relay action, motor controller work, radio emission, microwave radiation, and electrical storms, etc., will cause noise. Frequency drift (frequencyvariation): refers to the change of the mains frequency more than 3Hz, which is mainly due to the unstable operation of the emergency generator or the power supply caused by the unstable frequency of the power supply.
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Noise (electricallinenoise): refers to radio frequency *(RFI) and electromagnetic *(EFI) and other high frequency *, motor operation, relay action, motor controller work, radio emission, microwave radiation, and electrical storms, etc., will cause noise.
Frequency drift (frequencyvariation): refers to the change of the mains frequency more than 3Hz, which is mainly due to the unstable operation of the emergency generator or the power supply caused by the unstable frequency of the power supply.
Low voltage (brownout): The effective value of the mains voltage is lower than the rated value and lasts for a long time. The causes include: large equipment start-up and application, main power line switching, starting large motors, line overload, etc.
Mains interruption (powerfai1): refers to the situation that the mains is interrupted and lasts for at least two cycles to several hours. The causes are: circuit breaker tripping on the line, mains supply interruption, grid failure, etc.
SNMP: is the English abbreviation for Simple Network Management Protocol (SimpleNetworkManagementProtocol). Its significance is to allow computers and peripherals to be directly connected to the network without passing through the computer, and to allow the network system to be managed. High-end UPSs usually have an optional SNMP network management interface, which allows the UPS to easily connect to the network.
IGBT: is the English abbreviation of InsulatedGateBipolarTransistor. IGBT is a kind of power crystal. The UPS designed by using this kind of crystal can effectively improve the product efficiency, so that the power supply has many advantages such as good quality, high efficiency, low heat loss, low noise, small size and long product life.
Isolation transformer: refers to the equipment and general UPS collocation, often due to electrical characteristics of zero ground voltage, resulting in equipment * or misoperation and other issues. In order to avoid this kind of situation, some high-order UPS designs UPS with isolation transformer design to solve this problem. Through special design and cooperation, the output zero-ground voltage can be less than 1 volt to avoid the above problems. In addition, it has the functions of noise filtering and the like.
AVR: is the English abbreviation of AutomaticVoltageRegulation. AVR means automatic voltage adjustment, that is, UPS adjusts the coil turns of the internal output transformer or processes the input voltage through power electronic components to achieve a wide range of commercial power input and stable output voltage characteristics.
Power adjustment rate: the output voltage regulation accuracy when the input changes.
Communication protocol: rules that are commonly followed when data is exchanged between interconnected devices.
SNMP: English abbreviation of simple network management protocol, mainly used for monitoring, fault query and control TCP/IP network, simple network management protocol to provide user data programming.
Input frequency range: The standard frequency of China's power grid is 50Hz. UPS allows the mains frequency to have a certain variation range. Within this range, UPS synchronously tracks the mains frequency and outputs at the local frequency if it exceeds.
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