Low-voltage Mining Switch Plug-in Relay Protection Intelligent Test Bench
Product Parameters
1. Transformer Characteristic Tester Technical Indicators:
◇Voltage measurement range 1V—500V, current measurement range 100mA—5A, accuracy class 0.1.
◇Power U*I, accuracy class 0.2.
◇Working frequency 50Hz.
◇Power factor 0.050--0.999, accuracy class 0.2.
◇Frequency 45—65Hz, accuracy class 0.1.
2. DC Resistance Tester Technical Indicators:
◇Measurement range: 0.01A: 1μΩ~2kΩ 1A: 1μΩ~20Ω
5A: 1μΩ~4Ω 10A: 1μΩ-2Ω
◇Measurement accuracy: class 0.2, resolution: 1μΩ
3. Fully Automatic Turns Ratio Tester Technical Indicators:
◇Turns ratio measurement range: 1-10000
◇Accuracy: class 0.2.
◇Power supply: AC 220V±10%, 50Hz.
4. Current Transformer Technical Indicators
◇Measurement range 100mA-200A.
◇Accuracy class 0.05.
◇Its turns ratios are six gears: 5A, 10A, 20A, 50A, 100A, 200A.
5. Induction Voltage Regulator Technical Indicators
◇Input voltage three-phase 400V.
◇Output voltage three-phase 20V-650V.
◇Output capacity 100KVA.
6. 20kVA/50kV Test Transformer Technical Indicators
◇Rated capacity: 20kVA
◇Input voltage: AC400V
◇Input current: 50A
◇Output voltage: single-phase 50kV
◇Output current: 500mA
7. 30kW/800V Medium Frequency Generator Technical Indicators
◇Medium frequency generator
◆Model: YR--8 wound rotor medium frequency generator
◆Rated power: 30kW
◆Rated voltage: 800V
◆Nominal frequency: 150Hz
◆Rated power factor: cosφ=0.8 lagging
◆Number of phases: 3ph
◇ Motor
◆Model: Y - 4 three-phase squirrel cage asynchronous motor
◆Rated power: 22kW
◆Rated voltage: 380V
◆Rated frequency: 50Hz
◆Number of poles: 4P
◆Synchronous speed: 1480r/min
1. High system working efficiency
Fully utilize microcomputer data processing technology to directly input measurement results into the computer for calculation, eliminating the trouble of manual formula substitution. External wiring is uniformly arranged to avoid manual wiring as much as possible; when changing wires, automatic switching is completed only by control buttons on the test bench.
2. Humanized system operation
Fully utilize the functions of mechanical and electrical interlocking, and skillfully combine with computer software programs to effectively prevent misoperation. That is, if the system is not operated according to safety procedures, it will refuse to start, thereby effectively protecting the safety of personnel and equipment.
3. Reliable system operation This system is equipped with both manual and automatic operation modes. In case of abnormality in automatic operation, the manual operation mode can be usedwithout affecting normal testing tasks.
4. High system measurement accuracy
The measuring instruments and meters of this system all meet higher standards than national requirements.
5. Main components of the project (see detailed configuration in the sub-item test table)
■Transformer comprehensive characteristic test system.
■AC and induced withstand voltage test system.
■Common laboratory instruments and meters.
■The advantage of adopting a distributed scheme is that it is convenient for test personnel to operate, easy to install and debug, and can improve the reliability of the bench body. The system adopts computer program control operation. The computer sends instructions to automatically switch all gears on the control console to the correct position, automatically raise voltage, and when the voltage reaches the set test voltage or current, lock the test data and shut down the test system.
