UPS power working process
When the mains power is normal 380Vac, the DC main circuit has DC voltage, which is supplied to the DC-AC AC inverter. The operating principle of the uninterruptible power supply is a stable 220V or 380Vac AC voltage, and the mains is rectified to charge the battery. When the mains is under voltage or suddenly loses power, the battery pack feeds the DC loop through the isolation diode switch. There is no switching time from grid power to battery power. When the battery energy is about to run out, the uninterruptible power supply emits an audible and visual alarm, and stops the inverter operation at the lower limit of the battery discharge, and the alarm sounds. The uninterruptible power supply also has an overload protection function. When an overload occurs (150% load), it jumps to the bypass state and automatically returns when the load is normal. When a serious overload (more than 200% of rated load) occurs, the uninterruptible power supply immediately stops the inverter output and jumps to the bypass state, at which point the front input air switch may also trip. After the fault is eliminated, just close the switch and restart the work after restarting.
Measuring length: straightedge, tape measure, micrometer, micrometer, level meter;
Measuring angle: protractor, dividing head, theodolite, sextant, knife-edge angle ruler;
Weather measurement: thermometers, barometers, wind vanes, rain gauges, computers, and satellites.
More conventional: projector, hardness tester, hundred grid knife, etc.
Measuring tool: It is a tool for measuring a certain property. Including length, temperature, time, mass, force, current, voltage, resistance, sound, radio, refractive index and average dispersion.
Weight measurement: balance scale, floor scale, spring scale, etc.;
Temperature measurement: thermometer, thermometer, etc.;
Pressure measurement: pressure gauge, pressure transmitter, etc.;
Flow measurement: flow meter, differential pressure detector, etc.;
Liquid level measurement: differential pressure gauge, liquid level gauge, etc.;
Electric energy measurement: voltmeter, ammeter, field strength meter, frequency meter, etc.;
Composition measurement: analyzer, chromatograph, etc.;
Acid-base measurement: acidity meter, alkalinity meter, etc.
Measuring Tools,Tape Measure,Digital Vernier Caliper,Spirit Level Pen,Mutifunction Tape Measure
Rugao Yaou Import & Export Trade Co., Ltd , https://www.ntyaoumachinery.com