The Current Peak Factor (CF): The Current Peak Factor refers to the ratio of the peak value to the RMS value of the current waveform over a cycle. Since computerized loads do not necessarily absorb energy in a sinusoidal pattern when they accept sine wave voltage, they can produce higher peak currents (ranging between 2.4 to 2.6 times the current). Therefore, UPS designs should be able to provide a current with a CF value greater than 3 to meet the requirements of computerized loads.
Battery Series/Parallel Connection: Connecting multiple batteries with the same performance capacity in a certain polarity in series to stack forms a series connection, creating a battery pack; connecting multiple batteries or battery packs with the same voltage at their ends with the same polarity forms a parallel output. Ground Power Unit 2, 36V Aviation Power Supply 1, 400HZ Variable Frequency Power Supply 7, 115/200V Power Supply 2, 27V DC Power Supply 5, 400HZ Power Supply 12, Aviation Power Supply
Battery Management System: Protects UPS batteries and extends their lifespan for optimal charging. The battery management system encompasses both software and hardware, including battery characteristic assessment, automatic selection of charging modes, automatic alerts, and charging for special batteries, among other technologies.
Short Circuit: Refers to a direct connection between the positive and negative poles of a DC circuit, or between the live wire and neutral or ground wire in an AC circuit. A short circuit can cause severe overload, generate a large amount of short-circuit current, potentially damage equipment, and even lead to a fire.
Ground Wire, Neutral Wire, and Live Wire: The earth is a good conductor, and the ground wire is short-circuited to the earth through deeply buried electrodes. The transmission of household electricity is in a three-phase manner, with one neutral wire. When the three phases are balanced, the current in the neutral wire is zero, commonly known as the "neutral wire." Another characteristic of the neutral wire is that it is short-circuited to the ground wire at the total power distribution input, with the voltage difference nearly zero. The three phase lines of the three-phase electricity have 220 volts and can cause electric shocks, commonly known as the "live wire." The installation and arrangement of electrical lines have strict standards, and correctly assembling the ground wire, neutral wire, and live wire according to standards is crucial for safety. Electromagnetic Compatibility (EMC): A general term for the radiation waves and conducted waves of equipment.
Rated Safety Low Voltage (SELV): The IEC regulations specify limitations on the rated safety voltage for electrical equipment. The regulation indicates that extra caution must be taken to isolate or make it difficult for personnel to access high voltage or AC power sources to ensure safety.
Peak Factor (CF): The CF refers to the ratio of the peak value to the RMS value of a periodic waveform. Since computer loads accept sine wave voltages, they generate a CF (current ranging between 2.4-2.6 times), hence, when designing UPS systems, it is often necessary to provide specifications with a CF of 3 to meet the requirements of computer loads.
Thyristor: A high-voltage protective component used at the input end of equipment. If the voltage across its terminals exceeds its protection specification, an internal short circuit occurs, absorbing the excessive overvoltage input. Aircraft Ground Power 2, 36V Aircraft Power 1, 400Hz Variable Frequency Power Supply 7, 115/200V Power Supply 2, 27V DC Power Supply 5, 400Hz Power Supply 12, Aircraft Power
Radiation Wave (EMR): This is a type of space electromagnetic wave found in communication devices or computer operation equipment. Some wave sources are emitted into space through the device's wiring or electrical antennas. In certain cases, excessive amplitude waves may cause interruptions in electrical transmission or malfunctions of computer operation equipment.
Float and Equalization Charging: Both float and equalization charging are battery charging modes.
1. Float Charging Principle: When the battery is fully charged, the charger does not stop charging and continues to supply a constant float voltage and a very small float charging current to the battery. This is because, once the charger stops charging, the battery will naturally release electrical energy. Therefore, by using float charging, this natural discharge is balanced, and small UPS systems typically operate in float charging mode. 2. Equalizing Charge Principle: Battery charging is done using a constant current and time method, resulting in faster charging. This is a charging mode commonly used during battery maintenance by professional technicians and is also beneficial for activating the battery's chemical properties. Note: Intelligent chargers have the function to automatically switch between float charging and equalizing charge based on the battery's operating status, fully leveraging the advantages of both methods to achieve fast charging and extended battery life. Load Regulation Rate: The stability of the output voltage when the load changes. Overload: UPS has a specified load capacity, and exceeding this capacity is considered an overload. Overload Protection: Self-protection measures taken when the load exceeds the capacity. Overvoltage Protection: When input or output voltage exceeds the safe range, the UPS automatically disconnects the input or protects the output. Overheating Protection: The power components of the UPS that are prone to overheating are equipped with temperature sensors, and the UPS will shut down or bypass when overheating occurs.
