◆ microprocessor logic control, dds type sine wave generation, bipolar full-bridge spwm inverter; pure output waveform。
◆ wide ac input range, input voltage fluctuation range ±30%. input and output are completely isolated。
◆ an lc peak voltage filter is added to the input, which can filter out the peak voltage below 600v of the grid。
◆ the two outputs are isolated from each other, and the inverter control is isolated, without the need for an isolation transformer at the output end。
◆adopt active soft switch power factor correction to make the input power factor reach 0.99。
◆ lcd and led dual display, clearly understand the various conditions and parameters of the power supply。
◆ this machine has a fault self-test function, which can automatically detect, process and alarm for faults。
◆ when the input is switched between two channels, the module can provide a continuous flow time of 150 milliseconds。
◆ the switching time of dual-system hot backup is less than 25 milliseconds。
◆ modules can be used in hot backup in parallel, and switch automatically within 25 milliseconds after failure。
◆ meet the electromagnetic compatibility tb/t3073-2003, class a requirements。
◆ the design of the power supply screen complies with the railway standard tb/t1528.1-2002 "railway signal power supply screen part i general provisions", tb/t1528.7-2002 "railway signal power supply screen part 7: 25hz signal power supply screen"。
if the following requirements fail to meet your parameter requirements, you can call to customize!
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model
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alc25-2000
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alc25-4000
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capacity
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2kw
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4kw
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enter
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input rated voltage
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ac220v (rail, local sharing), 50hz
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input voltage range
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input ±25% of rated voltage
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input frequency range
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47～63 hz
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input power factor
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≥0.99
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output
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the output voltage
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track
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ac220v ±6.6v
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ac220v ±6.6v
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partial
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ac110v±3.3v
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ac110v±3.3v
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output current
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track
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5.5a
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10.9a
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partial
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7.3a
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14.5a
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output power
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track
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1200w@220v
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2400w@220v
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partial
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800w@110v
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1600w@110v
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output frequency
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25hz±0.4%
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phase
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the output voltage phases of the two main and standby modules are synchronized, and the local power phase is 90° ahead of the track power
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phase angle accuracy
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≤±3 degrees
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total harmonic content
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≤3%
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dynamicvoltageresponse
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overshoot ≤10% (when load changes from 0-50-100%), stabilization time ≤0.2 seconds
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deviceoverloadcapacity
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110% for 10 minutes; 150% for 10 seconds
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dc component
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output dc component ≤ 1v
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displayfunction
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power, fault, power supply led indication
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overallefficiency(fullload)
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η≥88%
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protect
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output short circuit protection
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after the power output is short-circuited, stop the output
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output overcurrent protection
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when the host is running, the output load is 110%, the module is protected, the fault light is on, and it switches to the standby machine to work
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input undervoltage protection
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the input voltage is reduced to 155±5vac, the fault light is on, and it switches to standby operation
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input overvoltage protection
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the input voltage is boosted to 285±5vac, the fault light is on, and it switches to standby operation
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output undervoltage protection
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200vac±5v, protect and switch to standby machine
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whole machine overheating protection
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air cooling, load control fan speed regulation, protection when the internal temperature is greater than 85℃
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conversion method
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active/standby conversion. when any module fails, it should be able to automatically switch to the standby module, and unplug any module.
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two-machine switching time
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when one module is used, the other module should be able to work normally.
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electromagnetic compatibility
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less than 25 milliseconds
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machine noise
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the tb/t 3073-2003 standard meets the requirements of the tb/t 3073 2003 standard in the railway industry.
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other
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≤60db
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dielectric strength
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insulationresistance
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≥100mω
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dielectric strength
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ac2000v 10ma 1min
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mtbf
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≥100000h
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dimensions
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1/2模块（310×343×445mm）
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working environment
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storage temperature
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-30℃~ 55℃
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operatingtemperature
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-10℃~ 50℃
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relative humidity
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≤90%
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atmosphericpressure
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106-74.8kpa (under 2500 meters above sea level)
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interface definition
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meet the standards of the ministry of railways
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