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      Welcome~Shenzhen Santak UPS power supply Co., Ltd.
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      Interpretation of Shante UPS Power Supply Terminology

      Electrical isolation: The general AC power supply (such as UPS) receives the input power supply and provides the load. If the fire line (HOT) and the zero line (NEUTRAL) provided to the load are not physically connected to the fire line and the zero line of the input terminal, it is said that the AC power supply can provide electrical isolation. The advantage of electrical isolation is that when there is an accident in the input power supply, it will not directly affect the electrical equipment at the load end.



      Interactive mode: A working mode of UPS. Its basic structure consists of bidirectional inverters, batteries and switching switches. When the power grid fails, the inverters supply power to the load, and when the power grid is normal, the inverters charge to the batteries. Interactive UPS has strong charging function, but the output has switching time.



      Backup mode: A working mode of UPS. Its basic structure consists of inverter, battery pack and switching switch. When the power grid is normal, the inverter stops outputting alternating current, and the alternating current of the power grid supplies power to the load through UPS. When the power grid fails (blackout, undervoltage, overvoltage, etc.), UPS switches to the output mode of the inverters through switching switches. This conversion process has a switching time of 3-10 Ms.



      Float charging and even charging: Float charging and even charging are the charging modes of batteries.



      1. Floating Charging Principle: When the battery is in full state, the charger will not stop charging, but will still provide a constant floating charge voltage and a very small floating charge current to the battery. Because once the charger stops charging, the battery will naturally release electric energy, so floating charge is used to balance this natural discharge. Small UPS usually adopts floating charge mode.



      2. Charging principle: Charging batteries in a fixed current and time manner, charging faster. The charging mode often used by professional maintenance personnel in battery maintenance is also beneficial to activate the chemical characteristics of batteries.



      Note: Intelligent charger has the function of automatically changing floating charge and equalizing charge according to the working state of battery. It can give full play to the advantages of floating charge and equalizing charge, realize fast charging and prolong battery life.



      Load Adjustment Rate: Voltage stabilization accuracy of output when load changes.



      Load Adjustment Rate: Voltage stabilization accuracy of output when load changes.



      Overload: UPS has a specified load capacity, which is overload if the load exceeds the rated load.



      Overload protection: self-protection during overload.



      Overvoltage protection: When the input or output voltage exceeds the safe range, UPS automatically disconnects the input or protects the output.



      Overheat protection: UPS's most easily heated power components are equipped with temperature sensors, which turn UPS off or bypass when overheating.



      Power supply adjustment rate: the output voltage stability accuracy when the input changes.



      Communication protocol: The rules that interconnected devices abide by when exchanging data.



      SNMP: English abbreviation of Simple Network Management Protocol (SNMP), which is mainly used for monitoring, fault inquiry and control of TCP/IP network, and provides a simple network management protocol for user data programming.



      Input Frequency Range: The standard frequency of China's power grid is 50Hz. UPS allows a certain range of changes in the city power frequency. Within this range, UPS synchronously tracks the city power frequency and outputs it at the local frequency when it exceeds it.



      Current Peak Coefficient (CF): Current Peak Coefficient refers to the ratio of peak value to effective value of current periodic waveform. Since the energy absorbed by the computer load when it accepts sinusoidal voltage does not necessarily follow the sinusoidal law, it will produce a higher peak current (between 2.4 and 2.6 times the current), therefore, UPS design should provide a current with CF value greater than 3 to meet the application of the computer load.



      Short circuit: refers to the direct connection between the positive and negative DC poles or AC wires of the circuit and the zero and ground wires. Short-circuit will cause serious overload, produce a large short-circuit current, may burn down equipment, or even cause fire.



      Ground wire, zero wire and fire wire: The earth is a good conductor. Ground wire is short-circuit connected to the earth through deep-buried electrodes. The transmission of municipal electricity is in three-phase mode with a neutral line. The current of the neutral line is zero in three-phase equilibrium, commonly known as "zero line". Another characteristic of the zero line is that it is short-connected with the grounding line in the total distribution input of the system, and the voltage difference is close to zero. Three phase lines and zero lines of three-phase electricity have 220 voltages, which can cause electric shock to people, commonly known as "fire line". There are strict standards for the installation and arrangement of electrical lines. It is very important for safety to assemble ground wire, zero wire and fire wire correctly according to the standards in practice.



      Electromagnetic Compatibility (EMC): The general term for radiation and transmission interference of equipment.



      Active power: The unit is W, which is the part of the load that absorbs and converts the energy. It forms part of the apparent power.



      Differential mode interference (DMI) refers to the mode of interfering with the path of noise flow. Noise that comes from the power line (HOT) and returns via the zero line (NEUTRAL) is called differential mode noise. Common-mode noise is a kind of noise that comes from the power supply fire line (HOT) or the zero line (NEUTRAL) and returns through the ground line. Noise usually passes through either common mode path or differential mode path, so different processing methods can be used to eliminate noise from different paths by means of filtering and shielding.
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