Shanghai spot checks uninterruptible power supply products




Fourth quarter in 2009, Quality and Technical Supervision of Shanghai city spot checks the production and sale of uninterruptible power supply a special product quality supervision and checking. The nine batches of sample products, tested and qualified seven batches, with a pass rate of 77.78%.



According to sampling results, the nominal Sendon International Co., Ltd. produced a batch of "Sendon," uninterruptible power supply, full output characteristics - energy storage power supply, labeling and instructions, no-load output characteristics - energy storage power supply, anti - Electrical items such as failure strength, quality, a serious problem. Quality supervision departments to explain, no-load output characteristic - energy storage power supply item is UPS power supply energy storage status examination without load output voltage and output frequency of quality; full output characteristics - one is assessing energy storage power supply UPS Power Reserve be able to state with a load of the output voltage and output frequency of quality. Electric strength assessment item is UPS power protection capability of the strength of insulation, can cause failure of the target user's personal and property risk. Identification and description of item is assessing whether the UPS power rating marking clear that the indicators of failure will affect the users of the normal, safe use.



The checks also found that the nominal Electronics Co., Ltd. Shantou Sybase production of a batch of "Shandon" back-up uninterruptible power supply, no-load output characteristic - energy storage power supply project failed.



Uninterruptible Power Supply (UPS) to purchase and use of small common sense



UPS is short for Uninterruptible Power Supply, is a kind of contained energy storage devices (commonly battery) to inverter as the main component of the constant voltage constant frequency of the uninterruptible power supply, it can solve the existing electricity power outages, low-voltage, high voltage, surges, noise and other phenomena, make your computer more secure and reliable system operation. Has now been widely used in computers, communications, banking, securities, telecommunications, medical, industrial control industries.



1. Uninterruptible power supply (UPS) the types of

UPS back-up by the working principle is divided into style, on-line and online interactive three main categories:

1) Off-line UPS is the most commonly used, it has automatic voltage regulator, UPS power protection, the most basic and most important function, although most are around 10ms conversion time, the output of AC power inverter is a square wave rather than the sine wave, but the structure is simple and has a cheap, high reliability, it is widely used in computers, peripherals, POS machines and other fields.

2) on-line UPS structure is more complex, but the performance improvement of all power to solve the problem, its distinctive feature is the ability to continue to zero output pure sine wave AC power interruption, can solve the spikes, surges, frequency drift, and all other power problems; due require a larger investment, usually used in critical equipment and network centers of power demanding environment.

3) Line-Interactive UPS mains power supply at about 165 ~ 264 volts, within which to provide users with ferromagnetic resonance by the regulator or transformer tap voltage handling the general electricity supply, with the grid frequency fluctuations, but also From the string into the power grid interference. For this UPS is only when the mains supply voltage below 150 volts or higher than 264 volts or so, it is possible to provide users with a true "UPS of high-quality sine wave inverter" Power.



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