Application scenario of power frequency on-line UPS
The core features of power frequency online UPS are: power frequency transformer isolation, strong shock resistance/lightning protection, high overload tolerance, wide input voltage adaptation range, excellent nonlinear load capacity, high reliability, and external long-delay battery. The disadvantages are large volume and slightly lower efficiency than high-frequency machines, so it is preferred to be used in harsh power grids, precision critical loads and high-power industrial/computer room scenes.
A, data center and computer room class
Small and medium-sized server room, weak current room: servers, storage, switches, firewalls, need zero-switching online voltage stabilization+uninterrupted power supply;
IDC machine room supporting power and edge machine room: high-power rack/cabinet power frequency UPS, multi-machine parallel redundancy, ensuring 7×24h continuous operation.
Second, the industrial production scene (the most important application)
Automatic production line, PLC industrial control system: injection molding, assembly line, numerical control equipment, DCS control system, the factory power grid fluctuates greatly and has many harmonics, and the power frequency is isolated to resist power grid surge and voltage drop;
Precision instrument workshop, physical and chemical laboratory: chromatograph, spectrometer, precision detection equipment, voltage distortion will cause experimental data to be invalid;
Central control room of chemical industry/metallurgy/mine: explosion-proof environment is equipped with central control instrument and valve control system, and the power grid lightning strike and high-power motor start-stop interference are serious, and the power frequency anti-interference advantage is outstanding;
Frequency conversion control loop of air compressor and water pump: high-power inductive load starts and stops to impact the power grid, and power frequency UPS isolation protection control unit.
Third, public infrastructure
Rail transit: subway/high-speed railway station weak current, signal system, gate, dispatching host, outdoor introduction of power grid clutter, high probability of lightning strike;
Power industry: substation comprehensive protection device, telecontrol communication equipment, power plant DCS system, power station power grid working conditions are complex;
Water conservancy/water affairs: pumping station automatic control system, water quality online monitoring equipment, gate control PLC；;
Security smart city: large discerning engineering command center, security platform server, bayonet host.
Fourth, the medical industry (just need the scene)
Operating room, ICU, CCU in 3A hospitals: ventilator, anesthesia machine, monitor, cardiopulmonary bypass equipment, life-threatening power failure, stable power frequency output+super anti-interference;
Imaging department: CT, DR, nuclear magnetic resonance, biochemical analyzer, precision medical equipment requires extremely high voltage quality, and power grid harmonics are easy to cause equipment failure.
V. Financial and Government Affairs Industry
Bank outlets, data rooms, clearing centers: teller terminals, ATM rooms, servers, and financial data cannot be interrupted;
Government computer room, tax/social security computer room, emergency command center: government private network server, emergency command big screen system.
VI. Communications and Radio and Television
Supporting the operator's base station computer room and base station BBU: the power grid of remote base stations is unstable and the voltage fluctuates greatly;
Television, radio studio, transmitter room: broadcasting equipment, mixer, transmitter, power failure will lead to signal interruption.
Seven, special bad power grid scene
Electrical equipment in remote mountainous areas, mining areas and rural power grid areas: the grid voltage fluctuates, frequent power outages, and the ultra-wide power frequency voltage regulation range is suitable for inferior commercial power;
Diesel generator with backup power supply: the generator output waveform is distorted greatly, and the power frequency UPS can correct the waveform, which is suitable for oil engine linkage.
Brief selection distinction
High-frequency online UPS: office buildings and small office computers with good environment and stable commercial power;
Power frequency on-line UPS: The above-mentioned whole scene with poor power grid, precise load, industrial environment, high power and need for isolation and lightning protection.
