DC-DC system ground fault tester portable instrument system ground fault point DC system grounding fault tester I. Description and Application RTF1000 DC system ground fault tester can quickly find the electrical lines in the ground, mixed lines, such as failure of the insulation condition bad "virtual ground" (up to a virtual ground resistance megohms) also can quickly find. Applications: 1) Railway: Signal Communications locomotives and any electrical equipment and wiring. 2) Communication: Communication and any electrical equipment and wiring. 3) Power: DC system of positive and negative bus insulation testing and fault location. 4) Other: aviation metallurgy, automobiles, household appliances and any other electrical equipment and wiring. Second, the main technical requirements a), Product Features:?? Ground fault point location search function measurement equipment insulation condition, when the insulation is damaged, when resistance drops below the specified requirements, can be insulated ground search, find insulation breakage, thereby processing. System components: insulation Ground Clamp analyzer mainframe and receivers basic principle: a signal generator to the measured object and ground fault current between the emitter voltage of a 1Hz ~ 1000Hz low frequency signal, generating a leakage current at the fault point. The receiver receives the fault current, the fault according to the size displayed on the LCD. ?? Insulation testing capabilities to measure, record insulation status of the device?? State management functions with computer data processing, equipment insulation can describe the state of the curve. Insulation condition of the equipment dynamic tracking. Timely detection of insulation defects, predict equipment insulation life. II) Main features: 1 Set insulation test and find the point of failure as a whole. 2 can be set to both the multi-frequency, multi-voltage signal generator for on-site testing. 3 easy to use, the device does not power on, do not throw line, and the line of the function under the puzzling case. 4 customizable personalization software (including instrument software and management systems) according to customer requirements. 5 to test the insulation state analysis, trend analysis, and status tracking. 6 Not only has the insulation resistance test, also has recovery voltage, the absorption coefficient measurements to accurately reflect the state of aging equipment insulation. 7. Positioning signal frequency is low, only 1Hz, eliminate capacitive ground illusion. 8 receivers and high precision, can accurately find fault. 9 Clamp variety of models to choose from a receiver. Three), the main technical indicators: Measuring Voltage measuring range :0.00-1000 V Insulation resistance measurement range: 100KΩ-200MΩ (100V) 50KΩ-100MΩ (500V) 20KkΩ-50MΩ (250V) minimum voltage measurement resolution: 0.1V Insulation Resistance : 0.01 MΩ Voltage Accuracy: 1% rdg ± 8dgt Insulation resistance: 0.5MΩ-100MΩ 5%> 100MΩ 10% output signal DC 1000V ± 10% DC-DC 500V ± 10% 250V ± 10% Power consumption is not less than 4 hours of continuous work Memory 128M Flash dot graphic LCD display 128 x64 maximum test sensitivity ≤ 0.25 MΩ machine 100% test sensitivity ≤ 10 KΩ Operating temperature -5 ℃ -40 ℃ Operating Humidity 80% RH measurement protection if the input voltage is 30V or more, prohibiting Measuring 59mm aperture clamp transformer power supply built-in lithium volume 210 x180 x120mm Weight 3.0Kg Product Address: http://www.whretop.com/product_detail.asp?Product_ParentID=34&Product_ID=168 Web site address: http://www.whretop . com