| After-sales Service: | Online |
|---|---|
| Warranty: | 1 Year |
| Type: | Ground Fault Detector |
| Control: | Computer Control |
| Weight: | 0-100Kg |
| Power Source: | AC220V |
| Customization: |
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Audited Supplier KDZD837 Dc system ground fault detector/finder/locator
Functional characteristics
1. The system voltage to earth measurement function instrument can measure the system voltage to earth, negative voltage to earth, system voltage, can achieve 0-300V voltage monitoring range;
2. System insulation impedance measurement function, the instrument can measure the system's positive insulation impedance to the ground, negative insulation impedance to the ground, balance bridge size detection, measuring range 0-999KQ;
3 AC channeling detection function, the instrument can judge the AC channeling fault in the DC system, and can measure the AC voltage value in the DC system, the AC voltage measurement range is 0-280V:
4. System distributed capacitance measurement function, the instrument can measure the system's distributed capacitance and display it in real time.
5. Ring network detection and positioning function, the instrument can detect a variety of ring network faults in the two busbars, including positive ring, negative ring, bipolar ring and heteropolar ring, etc., and can realize the positioning of ring network fault points through waveform display and direction display
; 6. The device has the functions of amplitude modulation, frequency modulation and signal waveform selection, which can realize the search and positioning of high-resistance ring network faults.
7. Branch insulation impedance measurement and insulation fault location function, the instrument measures the insulation impedance of each branch to the ground, and can realize the location of the insulation fault point through waveform display and direction display;
8. Signal spectrum analysis function, the device realizes the spectrum analysis function of current signal through fast FFT transformation, effectively extracts the signal amplitude of the measured signal frequency point, and improves the detection accuracy;
9. Ammeter function, the device can be used as a high-precision ammeter, current measurement resolution up to 0.01MA:
10. Waveform curve display and direction display function, when using the detector to detect the branch under test, the display will display the current change of the branch under test in the form of waveform curve, which is convenient for users to quickly and accurately find the fault point, and show the fault point direction when there is a ring network fault and a ground fault.
KDZD837 Dc system ground fault detector/finder/locator
Operation method
The analyzer is connected to the DC system
Turn off the power switch of the analyzer, connect one end of the power cable configured with the device to the analyzer, and connect the other end to the positive, negative, and ground terminals of the DC system by color.
Brown: positive electrode; Blue: negative electrode; Yellow/green: ground
After confirming that the wiring is correct, turn on the power switch and enter the main interface of the analyzer, as shown below:
Analyzer main interface
After the power switch is turned on, the power indicator of the analyzer is on, and the system voltage level is automatically identified to determine whether the system has AC power transmission fault, the insulation impedance of the system is calculated, and is displayed on the LCD. If the system insulation is normal, the normal indicator is on, and if the system positive or negative ground insulation is detected, the positive or negative ground alarm indicator is on.
Probe self-test
Put four batteries No. 5 into the detector battery compartment according to the mark, turn on the power switch, and enter the main interface of the detector. When the analyzer detects that there is insulation fault in the system, clamp the detector collector on the ground wire of the analyzer, use the function key to select the detection function as the fault detection function, and press the test key for detection. Please wait "prompt screen, please put the detector close to the analyzer, after the detection starts, the detector will show the grounding detection waveform, the detection process is shown as follows:
The downward arrow in the figure is the auxiliary arrow of signal synchronization, which appears at the turning point of the waveform from high to low.
When the detector detects, the signal waveform of two periods will be displayed. The measured waveform may be different from the above figure. As long as the waveform of two periods is correctly displayed, the self-test of the device can be determined to be normal. The direction indicator arrow of the ground point can reflect the direction of the fault point relative to the test point. For the specific judgment method, see the introduction of "Using the 'Ground point Direction' to detect the grounding of the loop" later.
In the absence of grounding, the system analyzer does not send any signal to the system and at the same time does not send a synchronization signal to the sounder.
During the self-test, please ensure that there is no other equipment that sends signals to the DC system in the DC system. If there is, please exit the post-test, including in the subsequent search process, the equipment with signal sources should exit the DC system, otherwise it may cause interference to the detection.
ground fault detector
| Environment of use |
| Working power supply :DC40V-300V |
| Ambient temperature :-20°C to 55°C |
| Relative humidity :0-90% |
| Dc voltage measurement |
| Dc voltage measurement range :0-300V |
| Dc voltage measurement resolution :0.1V |
| Dc voltage measurement accuracy :0.2% |
| Ac voltage measurement |
| Ac voltage measurement range :0-300V |
| Ac voltage measurement resolution :0.1V |
| Ac voltage measurement accuracy :0.5% |
| Insulation resistance measurement |
| Insulation resistance measurement range :0-999.9KΩ |
| Insulation resistance measurement resolution :0.1KΩ |
| Insulation resistance measurement accuracy :≤5% |
| Detection bridge amplitude adjustment range :0MA, 0.25MA, 0.5MA, MA, 2MA |
| Detection bridge frequency adjustment range :0.125HZ, 0.25HZ, 0.5HZ, 1.0HZ |
| Detection ring network resistance range: less than 200KΩ |
| System distributed capacitance measurement |
| System distributed capacitance measurement range :0-999UF |
| Test waveform type selection: sine wave, square wave |
| Working mode: forced signal start, automatic signal start |
| Display media and resolution :TFT,320X240 |
| Main technical indicators of the detector |
| Insulation resistance measurement |
| Insulation resistance measurement range :0-500KΩ |
| Insulation resistance measurement resolution :0.1KΩ |
| Insulation resistance measurement accuracy ≤±10% |
| Spectrum analysis range |
| Number of spectrum analysis channels :1 |
| Frequency spectrum analysis band range :0.125-125HZ |
| Frequency resolution :0.125HZ |
| Current waveform display period :8S |
| ; Detectable feeder current range :0-2A; |
| Current measurement range :-100-+100MA; |
| Current measurement resolution :0.01MA; |
| Display media and resolution :TFT,320X240 |
| Wireless Communication Technology |
| Rate :2MBPS, due to the short transmission time over the air, greatly reducing the collision phenomenon in wireless transmission |
| Multi-frequency points :125 frequency points, to meet the needs of multi-point communication and frequency hopping communication |
| Ultra-small: built-in 2.4GHZ antenna, compact size, 15X29MM |
| Low power consumption: When working in reply mode communication, fast air transmission and start-up time greatly reduce the current consumption. |
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