1. HDJB-702 relay protection tester boot steps.
1. Plug the power cord of the relay protection tester into the AC220 power socket.
2. Check the wiring (external keyboard or mouse is required), turn on the power supply of the tester and the external computer respectively after confirming that it is correct, and wait for a while to enter the interface of selecting the startup mode.
3. After starting the Windows operating system, you will enter the main interface of the software function test and carry out various tests.
2. Keyboard shortcuts.
F2 Start Stop Test After pressing the F2 button when the tester is not outputting a signal, the tester starts to output a signal;During the test, press the F2 button to stop the test, and the tester stops outputting the signal
F3 Exit the experiment Closes the current experiment module
F5 Manual Increment Each time the F5 key is pressed during the test, the output signal is increased by the set step
F6 Manual Decrement Each time the F6 key is pressed in the experiment, the output signal decreases once according to the set step
Ctrl+1 — Ctrl+7 turns on and closes the output channel.
Ctrl+1 Ctrl+3 for UA, UB, UC, Ctrl+4 Ctrl+6 for IA, IB, IC, Ctrl+7 for UX;
f7 Read Setup File Import test parameters from a saved parameter setup file
f8 Save the setting file Save the currently set test parameters to a file to avoid duplicate settings;
tab to move the input focus to the next input box;
Shift + Tab moves the input focus to the previous input box.
3. The AC current source increases the output current.
When the current used exceeds the high current output of each phase of the tester, the tester current sources can be used in parallel. When used in parallel, the output phase of the parallel current channel should be set to the same, and the output current is the sum of the output amplitudes of the parallel current channel.
Fourth, the AC current source increases the output power.
When the output power of the required current source is greater than the output power of each phase current, the tester current source can be used in series. For example, if IA and IB are connected in series, the amplitude of the two phases is set to be equal, and the phase difference is 180°, and the output power can be doubled.
5. The AC voltage source increases the output voltage.
When the voltage used exceeds the output voltage of each phase of the tester, the phase of the two-phase voltage can be set to a difference of 180°, and the output voltage is the sum of the output amplitudes of the two-phase voltage channels. The tester can only support an AC voltage of 240V.
HDJB-702 Relay Protection Tester Shutdown steps.
Use the mouse to click "Start" - "Shutdown" in the lower left corner of the interface, select "OK" in the pop-up dialog box to turn off the computer, and then turn off the panel power switch after confirming that the computer is turned off. Do not turn off the panel power switch directly when shutting down, please turn off the Windows operating system of the computer first, and then turn off the power switch.
1. High-performance host.
The output part adopts DSP control, fast running speed, strong real-time digital signal processing ability, transmission frequency bandwidth, and high-resolution D a conversion control. The output waveform has high accuracy, low distortion and good linearity. The new technology and precision component materials are adopted, and the professional structural design is carried out, so the device is small in size, light in weight, full in function, easy to carry, can work when it is turned on, and the flow test is very convenient.
2. High-fidelity linear power amplifier.
The well-designed voltage and current amplifiers realize AC and DC sharing, and the output has always adhered to the use of high-precision, high-fidelity, high-reliability modular linear power amplifiers, with excellent performance. It will not cause high and medium frequency interference to the test site, and ensure that the waveform is smooth and accurate from large current to small current.
3. Large-screen LCD display.
Using large-screen high-resolution graphic LCD screen, all operation processes are set on the display screen, the operation interface and test results are displayed in Chinese, and the display is intuitive and clear.
4. Stand-alone machine is easy to operate.
It can complete most of the test verification work in the field, verify various relays and microcomputer protection, and simulate a variety of complex instantaneous, permanent and conversion faults for the whole group of tests. It can be used right from start-up, and the operation is convenient and fast.
5. DC power output.
The device is equipped with a dedicated 110V and 220V adjustable DC power output. Automatic simultaneous output at start-up, which can be used as a protective power supply without software setting and adjustment.
6. Self-protection function.
It adopts a reasonably designed heat dissipation structure, has a variety of reliable and perfect protection measures, can judge overcurrent, overvoltage, overload, short circuit, high temperature, abnormal data and other phenomena at the same time, and also has a certain fault self-diagnosis and locking function.
7. The software is powerful.
It can complete a variety of large-scale and complex calibration work with a high degree of automation, and can easily test and scan various protection values, perform fault playback, store test data in real time, display vector graphics, and print reports online.
8. The interface is complete.
There is a built-in keyboard and mouse on the device panel, which can be operated stand-alone, or can be operated by connecting an external keyboard and mouse through the keyboard and mouse interfaceIt also has two USB ports and RS232 ports, which can communicate with computers and other external devices. With external PC operation, the test results can be automatically sorted out and recorded into a test report for reference, and can also be directly saved by using a USB flash drive and easily transferred to an external PC for editing, printing and other processing.
1. High-performance industrial control computer.
The relay protection tester uses a high-performance industrial computer as the control microcomputer, directly runs the Windows XP operating system, and the device panel has 84" TFT true color LCD display, external PC mouse and embedded keys, USB port on the panel for easy data access, data communication and software upgrades. Only a simple computer knowledge is required to master the operation, and the interface is friendly, intuitive and convenient.
2. Digital signal processor microcomputer.
The relay protection tester uses a high-speed digital control processor as the output core, and a double-precision algorithm is applied to the software to generate high-precision waveforms arbitrary in each phase. Because the instrument adopts an integrated structure, the internal is compact, the data transmission distance is short, and the number of waveform points of weekly wave fitting exceeds 2000 points, which overcomes the problem of small output waveform points caused by long data communication lines and narrow frequency bands in the notebook computer direct control measurement and control instrument. It is precisely because of the high number of waveform points, high waveform fidelity, small harmonic component, and low requirements for low-pass filters, so that it has good transient characteristics, phase frequency characteristics, amplitude and frequency characteristics, easy to achieve phase shifting, harmonic superposition, and high accuracy can also be guaranteed at high frequency.
3. DA conversion and low-pass filtering.
The relay protection tester uses a true 16-bit D A converter, and the 16-bit resolution ensures the accuracy and linearity of the current and voltage in the whole range. Due to the high resolution of D A and the high number of waveform points, the quality of the stepped waveform output by D A conversion is quite high, and the post-stage only needs a simple low-pass filter to filter out the high-frequency components, restore the high-quality and high-stability sine wave, and effectively overcome the problems of amplitude and phase drift.
4. Voltage and current amplifiers.
The phase current and voltage do not use the current booster and voltage booster, but adopt the direct output mode, so that the current and voltage source can directly output the waveform from DC to the waveform containing various frequency components, such as the combined waveform of square wave and the superposition of various harmonics, the fault transient waveform, etc., which can better simulate the current and voltage characteristics of various short-circuit faults. The power amplifier circuit adopts imported high-power and high-fidelity modular power devices as the power output stage, plus the heat dissipation structure, with complete overheating, overcurrent, overvoltage and short-circuit protection.