In last few years, our country of cable television career arrived to develop at full speed, offer TV program of rich and colorful for the audience, abounded our culture life, especially cable television net is developed recently muti_function appreciation business, data business, more our country informatization builds infuse new vitality, , should ensure operation of security of cable television net is mixed high grade broadcasting is crucial. Cable television front is this system heart, make sure systematic heart work is steady, front is indispensible use UPS UPS. UPS power source can solve power source to cut off the power, surge of voltage cave in, power source, reduce an oscillation, electrical interference, power supply dash forward twinkling of wave motion of wave, power source, exchange changes reach harmonic lack fidelity etc by city quality of electric power supply differs pair of front equipment to cause a harm. How is the article designed and safeguard UPS power source to talk about him experience and experience.

One, how to design system of UPS power source

1, UPS not principle of job of upright power source

UPS (Uninterrupted Power Supply) power source includes two parts lead plane and storage battery, can divide by working way for mothball type and line type two kinds. Report of town of power source of mothball type UPS is regular when power supply, passage of bypass of town report communication is immediate to laden power supply, right now the inverter on lead plane does not work, when town report power cut, just by accumulator power supply, classics inverter drive is laden. It does not have a change basically to town report tone.

And power source of line type UPS differs somewhat however, when town report is regular, it turns communication into dc above all, have wave of wide modulation of arteries and veins, filter next, turn dc into alternating current source afresh again to laden power supply; Once town report is interrupted, instantly instead accumulator inverter is right laden power supply; , output of power source of line type UPS is as complete as city electrified wire netting segregation power source of pure sine wave, improved power supply quality greatly, protected laden safety, effective job. Land please: ? of pole of uncut jade of Mian Lai white browses more information

2, choice of capacity of UPS rated output

Calculate above all front load power, mix to ensure UPS system is efficient prolong UPS service life as far as possible, general and laden power should satisfy 60-70% of UPS rated power. For example our front, need equipment of uninterrupted power supply to satellitic receiver, modulator, blender, smooth glow receives computer and network exchange to wait, statistical general power is 4500VA, we choose 4500÷75%≈6428VA, chose leader of 6500W line type.

3, computational accumulator working hours

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