NINGBO BLUEOCEAN AUTO PARTS CO.,LTD , https://www.blueoceancarparts.com
Portable DC Ground Fault Finder Features
1. The main function introduction (1). System to ground voltage measurement function, the instrument can measure the system to ground voltage, negative to ground voltage, system voltage, can achieve 0-300V voltage monitoring range;
(2). System insulation resistance measurement function, the instrument can measure the system's ground insulation resistance, negative ground insulation resistance, can realize 0-999KΩ measurement;
(3). AC string detection function, the instrument can determine the AC series in the DC system failure, and can measure the AC system in the DC voltage value, AC voltage measurement range is 0-280V;
(4). Branch insulation resistance measurement function, the instrument measures the positive and negative insulation impedance of each branch;
(5). Branch ground fault point positioning function, the instrument can realize the positioning function of the earth fault branch ground fault point;
(6). Current meter function, the device can be used for high precision ammeter, current measurement resolution up to 0.01mA;
(7). With no signal grounding search function, the device can locate the ground fault point without injecting any signal into the system.
(8). Direction display function, for testing the branch with grounding indication, the instrument will have a direction indication arrow to indicate the relative direction between the user's grounding point and the found grounding point, and improve the search efficiency.
(9). Insulation index analysis function, in the use of grounding function detection, after detecting a branch, the detector will display the insulation index of the branch branch for user reference analysis.
(10). Waveform curve display function, when using the detector to test the insulation status of the measured branch, the display will show the current change of the measured branch circuit in the form of a waveform curve to facilitate the user to quickly and accurately find the fault point.
2. Equipment Features (1) High reliability design The device adopts an imported 16-bit microcontroller as the main system. The hardware design strictly complies with the relevant standards of electric power and electromagnetic compatibility. Internal redundancy is used to ensure the reliability of the device and the device under test.
(2) The precision material selection device adopts a high-precision DC clamp meter as a signal acquisition unit, and the voltage sampling adopts a high-accuracy imported analog-digital conversion chip, and the voltage and impedance are accurately measured;
(3) User-friendly human-computer interaction interfaces "analyzer" and "detector" both use LCD screens for users to view information;
The operation is simple and quick. When the detection of different branches is realized, only one start button is needed to complete the detection.
The test results are intuitive and clear, and the test results can be presented to the user through various display modes, including grounding or not, waveform curve, insulation class, insulation resistance, leakage current, and direction information.
(4) The intelligent detection and identification system "analyzer" can automatically identify the system voltage level;
"Analyzer" can quickly display insulation resistance information after system insulation resistance changes.
After the “detector†and “analyzer†information are synchronized once, it is not affected by the detection distance.
When the "detector" is inspected, the clamp meter can clamp a single power cord or multiple power cords to increase the detection efficiency.
After the detection of the “detector†is completed, if there is an insulation fault in the measured branch, the direction of the fault point relative to the test point will be determined.
(5)Complete test function and processing ability The "analyzer" and "detector" are equipped with a built-in wireless data transmission module for communication. The test function and display information are complete and can handle various types of insulation faults in the DC system.
(6) The high security device can locate the ground fault point without injecting signals into the DC system. In the signal mode, the device is provided with a current limiting and pressure limiting module without any influence on the DC system.
Portable DC Ground Fault Finder Features
The PDF-8000 Portable DC Ground Fault Finder uses a high-resolution sensing unit to collect the leakage current at the ground point in the DC system, and detects the insulation resistance to ground within 600KΩ at a voltage level of 220V. The detection speed is fast and the positioning accuracy is accurate. Really solved the insulation fault problem in the DC system.