◆ 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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