KDSL-S500A three-phase large current generator is a high-precision and intelligent constant-current test equipment, with the maximum output current of 500A/phase, supporting three-phase simultaneous or split-phase output, and the current stabilization accuracy is ± 0.5%. PLC control and 10.1-inch touch screen operation are adopted, with full automatic and manual modes. The current and time can be set by one key, and the current and time can be automatically increased, stabilized, timed and returned to zero, greatly reducing the manual burden. The equipment conforms to GB 7251 series temperature rise test standards and is applicable to ex-factory inspection, type test and temperature rise test of circuit breaker, switch cabinet (such as GCK and MNS), protective relay and other low-voltage complete equipment. Built-in multiple protection, energy consumption measurement and data storage functions, support software upgrading and parallel connection with multiple units, widely used in power, manufacturing and detection fields, high efficiency, safety and reliability.

Main functional features:
1) High-configuration industrial personal computer is built in, and programmable controller PLC is used as the central processor to perform real-time scanning of AC signals, realize comprehensive monitoring and closed-loop control, and design password setting management. Only personnel with corresponding operation authority can perform some functions.
2) Imported PC real color 10.1-inch large LCD touch screen operation, intelligent sensor supporting field bus technology is adopted to realize full digitalization of data transmission, touch color LCD screen is selected as the display operating unit, with full Chinese menu, clear and intuitive interface and simple and convenient operation. No external auxiliary equipment is required for test, automatic control, simple operation, fast, simple and convenient
3) The instrument has two test methods: full automatic test and manual test. Simply set the test current and time. With automatic current stabilization system.
4) It is only required to set the target current, without manual monitoring. It is only required to set the test, current and step length, save manual voltage regulation, manual recording, curve drawing and other tedious labor, reduce labor intensity, improve work efficiency and read the data to the computer after work.
5) It has automatic alarm function for exceeding the limit value, with reliable overheat, overcurrent, overvoltage and short circuit self-protection functions. The AC voltage regulating device shall be protected by microcomputer automatic protection control and mechanical micro limit switch to ensure the normal operation of constant current power supply and improve the safety and reliability of the product.
6) Humanized interface, friendly software interface, full Chinese operation interface, control software with data recording, current and temperature waveform storage, data management, statement, printing and other practical functions; All parameter settings are completed in the software. Analyze the relationship between current and temperature more intuitively. Make all data and test analysis results clear at a glance. During the test, it can automatically track the target current, automatically stabilize the output current and automatically adjust the three-phase current; Automatically return to zero position after test; Automatic print out
7) The automatic adjustable AC constant current source shall meet the temperature rise test of GB 7251.1 ～ GB 7251.5 standard MV and LV complete switch cabinet (including control cabinet with multi-channel output such as GCK, MNS, etc.), and the automatic adjustable AC constant current source shall be able to realize the parallel operation of multiple constant current power supplies during the temperature rise test (the copies of the supporting materials for the parallel operation of multiple constant current sources by the user shall be provided, such as the temperature rise test of GCK or MNS, etc.)
8) Three-phase automatic balance system is provided to ensure three-phase balanced output. 0.02 class transformer is used for output current sampling, and current new power electronics technology is used, with strong anti-interference capability and high output accuracy.
9) The accuracy adjustment menu allows the user to adjust the error value. Program-controlled AC constant-current power supply can realize full intelligent correction and automatically generate multi-stage correction coefficient within the adjustable range of the equipment to ensure the current stabilization accuracy of the constant-current power supply.
10) Test modules can be customized according to user requirements, and software can be upgraded for free.

technical parameter

Maximum output current: AC single-phase 500A 3 groups
Circuit mode: special process electric voltage regulator

 

Alternating current input
Phase line: 3 Φ 4W+G
Voltage: 380V ± 10%, 50Hz ± 2%, three-phase, four-wire
Input current: 13A after compensation (energy saving)

 

output
Phase line: 3 Φ 4W
Voltage: phase voltage 0-10V; line voltage 17.732V
Current: AC0-500A continuously adjustable, stepless speed regulation mode, adjustable voltage regulation step; Three-phase simultaneous output, single-phase output and split-phase output; Manual mode output and automatic mode output.
Rated capacity: (15) KVA
Current stabilization accuracy: output current ≤ ± 0.5%
Output terminal: terminal A B C N
Protection: electronic circuit can quickly detect overvoltage, overcurrent, over-temperature and other automatic tripping protection and alarm devices, the voltage and current under non-test state are zero

 

Display and setting
Voltmeter display: digital display instrument (display accuracy: 0.1V, display error: ≤ 0.5% ± 1 word)
Ammeter display: digital display instrument (display accuracy: 0.1V, display error: ≤ 0.5% ± 1 word)
Regulation setting: current (computer setting)

 

system
Overall efficiency: ≥ 90%
Withstand insulation impedance: AC 1800V 1 minute, 20 megohms
Cooling device: forced fan cooling
Noise:<60dB (1mm in front of the machine)
Transformer accuracy: 0.02
Metering energy consumption: the equipment is equipped with energy consumption metering device, and the energy consumption can be uploaded
Protection class: IP20

 

work environment
Operating mode: long-time temperature rise test
Temperature: - 10 ℃ - 50 ℃
Humidity: 0-90% (non-condensing state)
Altitude below 1500 m

 

appearance
Structure: integrated structure
Bus: output according to the national standard back-end
Soft connection: according to system configuration, 2m/piece, three pieces