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OEM Best instrument to test earthing resistance Suppliers – Online Monitoring System of Circulating Current on Cable Sheath GDCO-301 – HV Hipot
General Information Cables above 35kV are mainly single-core cables with metal sheath. Since the metal sheath of the single-core cable is hinged with the magnetic field line generated by the AC current in the core wire, the two ends of the single-core cable have a high induced voltage. Therefore, appropriate grounding measures should be taken to keep the induced voltage within the safe voltage range (usually no more than 50V, but no more than 100V with safety measures). Usually, the metal sheath of short line single-core cable is grounded directly at one end and grounded through gap or protection resistor at the other end. The metal sheath of long line single – core cable is grounded by three – phase segmental cross – connection. No matter which kind of grounding me... -
China High Quality Cable Fault Location Factory – GD-4136H Cable Fault Locating System – HV Hipot
GD4136H Cable Fault system is an important tool to maintain all kinds of cables. It uses various detection way to test cable faults, which is suitable for different levels voltage power cables and communication cables. The system contains below units: 1.GD-2131H Impulse Generator 2.GD-4132 Cable Fault Locator 3.GD-4133 Multi-pulse Cable Fault Detector 4.GD-4133S Multi-pulse Coupler 5.Other accessories GD-2131H Impulse Generator It’s used to generate HV impulse when using impulse flashover method to detect high impedance fault. Features ● Strong burning ability, max.burning power is 1000W, breakdown point can be burned in short time and the resistance of breakdown point is decreased. ● If working together with GD-4133 Cable Fault Tester, there are two locating ways: a. Low vol... -
China High Quality Sf6 Gas Online Monitoring Device Manufacturer – GDP-311IR SF6 Gas Purity Tester (IR Method) – HV Hipot
General Information GDP-311IR SF6 gas purity tester is a portable instrument for on site SF6 gas purity test developed by our company. The infrared principle SF6 gas purity testing sensor manufactured by European Sensor Company is used to test the purity of SF6 gas. With professional hardware chips and excellent software algorithms of STMicroelectronics, we have produced a new generation of SF6 gas purity analyzer. Application ● Analysis purity of SF6 gas electrical equipment for electric power ● SF6 gas cylinder gas quality test ● Quality test of SF6 gas for recovery and reuse ● High purity gas manufacturing ● Semiconductor industry dry gas supply ● Research and development use ● Clean room/dry house monitoring Features ● Imported high-precision sensors with self-calibration ... -
OEM Best open cup flash point test Exporters – GDSZ-402 Automatic Acid Value Tester – HV Hipot
General Information Automatic Acid Value Tester is designed for testing acid value for transformer oil, turbine oil and fire resistant oil etc. PC control system can improve the work efficiency and reduce the harm in organic solvents and chemicals to human body. This instrument is easy to operate and have good capacity in anti-interference and stability. Features ● 320*240 LCD touch screen, user-friendly interface. ● Neutralization titration principle, to complete liquid charge, titrate, stir, determine the titration end point automatically under normal temperature. LCD screen can show the test result and print. ● Color sensor can match up the test titration end point, the judgment of end condition is reliable. ● Waste liquor cup is no need. ● Peristaltic pump control the cha... -
OEM Best numerical relay testing Supplier – GDJR-200D Single Phase Electronic Thermal Relay Calibrator – HV Hipot
Standard compliance GB/T 14598.15-1998 Electric Relays Part 8: Thermal Electrical Relays DL/T 624-1997 Technical Specification of Test Equipment Based on Micro-computer for Relaying Protection DL/T 846-2004 General Technical Specifications for High Voltage Test Equipments DL/T 596-2005 Preventive Test Code for Electric Power Equipment GB50150-2006 Electrical Equipment Installation Engineering-standard for Hand-over Test of Electric Equipment GB1094.1-GB1094.6-96 Degrees of Protection Provided by Enclosure (IP Code) GB2900 Electro-technical terminology GB/T16927.1~2-1997 High Voltage Test Techniques GB4793-1984 Safety Requirements for Electronic Measuring Apparatus GB191 Packaging-Pictorial Marking for Handling of Goods GB/T.311-1997 Insulation co-ordination for... -
OEM Best Primary Injection Test Set Manufacturer – GDKC-15 Series Circuit Breaker Analyzer – HV Hipot
General Information High voltage circuit breaker is one of the most important control equipment in the power system. GDKC-15 Series is used to test the dynamic characteristics of high voltage circuit breaker. It is easy to operate, with high accuracy. GDKC-15 Series GDKC-15A GDKC-15B GDKC-15C GDKC-15D GDKC-15E GDKC-15F GDKC-15G GDKC-15H Metal contact 12 12 12 12 12 12 12 12 Closing resistance 6 6 6 6 6 6 6 Graphite contact 3 3 3 3 6 Double-ended grounding 3 3 3 6 Dynamic resistance(Pre-insertion resistor) 1 1 3 3 3 3 6 Static resistance 1 1 3 3 3 3 6 Ground resistance 3 6 Features ● It is suitable for the mechanical test of all types of SF6 switches, GIS combination appliances, vacuum switches and oil switches. ● Strong anti-interference ability. It ... -
China High Quality Harga Cable Tester Factory – GD-4138H Cable Fault Locating System – HV Hipot
GD-4138H Mobile Cable Fault Locating System is important tool to maintain all kinds of cables. It is compatible equipment that can trace, locate the underground cables, with fault distance measurement and HV generation. As it is movable device, it is convenient to carry on-site. If acoustic locator is used together, it can locate accurate position of cable fault point. Application is underground cable, aerial cable, power cable, local cable, communication cable and fiber cable. Typical fault to be detected includes ● High impedance flash-over fault ● High impedance leak ● High/low resistive grounding ● Short-circuit fault ● Open-circuit fault ● Poor connection/Disconnection GD-4138L system includes ● GD-4138H main frame (Coupling device, Sphere gap, HV generator are inside) ● GD-... -
OEM Best Insulator aging Supplier – GDYZ-301A Zinc Oxide Surge Arrester Tester – HV Hipot
It is the special equipment of testing zinc oxide electric performance. The instrument can accurately and stably measure the arrester resistive current and the monitor counter action parameters while the equipment is running. It can also check the monitor ammeter. Features ● 8inch color LCD touch screen, high speed thermal printer. ● The measurement data of wire and wireless is the same. ● Wireless sampling, with long distance. A. Wired: indoor use, or on-site where the PT sampling wiring cabinet is near with tested lightning arrester. B. Wireless: outdoor use, or on-site where the PT sampling wiring cabinet is far from tested lightning arrester, wireless distance is up to 1000M. ● Three-phase can be measured at the same time. The resistive current of 3channels can be measured at ... -
China High Quality ndt equipment Supplier – Online Monitoring System for Metal Oxide Arrester – HV Hipot
General Information There are usually two ways to monitor the insulation condition of high voltage electrical equipment in substations: online monitoring and live (portable) online detection. The former one can obtain the characteristic parameters reflecting the abnormal insulation of the equipment at any time, which is convenient for automatic management. However, the investment is relatively large, the installation and construction are relatively troublesome, and regular maintenance is needed. For the latter, it has the advantages of low investment, highly targeted, easy to install, maintain and update. As long as the sampling unit is installed in the electrical equipment in advance, a regular detection can be done for electrical equipment in operation, and insulation flaw can be f... -
China High Quality Simulate Lightning Impulse Factory – GDCL-V 20kV/10kA Impulse Combination Wave Test System Technical Solution – HV Hipot
Application The equipment is according to combination wave testing requirement of the low-voltage power distribution system SPD II product, enable to generate impulse voltage (1.2/50μs) and impulse current (8/20μs), is used for grade III test and limiting voltage test of SPD and components. It is also used for impulse current test and residual voltage test of the MOV valve plate, unit and surge protective device(SPD), or used in other scientific research experiments. The device uses touch screen and PLC control technology, and the main performance meets the needs of domestic and foreign SPD products and their components for various combination wave testing. Standards ● GB 18802.1-2012 GB 18802.1-2012 Surge protective devices connected to low-voltage power distribution systems Part 1:Req... -
China High Quality PD Testing on transformers Manufacturers – GDPD-414 Portable Partial Discharge Detector – HV Hipot
Main unit UHF sensor, round type, suitable for GIS UHF sensor, rectangle type, suitable for power cable, transformer, switchgear HFCT, suitable for power cable, transformer TEV sensor, suitable for switchgear Ultrasonic sensor, suitable for transformers, switchgear Above pictures are only for reference first. The GDPD-414 Portable (GDPD-414H handheld) Partial Discharge Detector adopts smart quick intelligent power test system (Soft No. 1010215, trademark registration number 14684781 (14684481)). It can flexibly configure various sensors according to different products to be tested. TEV, ultrasonic and HFCT are suitable for partial discharge detection of high-voltage switchgear and ring network cabinet; Ultrasonic and UHF are suitable for detecting G... -
OEM Best Dew Point Meter Of Sf6 Gas Exporters – GDSF-411CPD SF6 Gas Comprehensive Analyzer – HV Hipot
General Information GDSF-411CPD SF6 gas comprehensive analyzer is a portable device designed to measure SF6 gas dew point, purity and decomposition product. The core component with chilled mirror method is used to test dew point, European sensor with infrared method to test SF6 gas purity and electrochemical sensor from Membrapor to test SF6 gas decomposition product. Besides, we also adopt professional hardware chips and excellent software algorithms of STMicroelectronics. Application Features Specification SF6 Humidity Measurement method Chilled mirror method (Stirling Refrigeration) Measurement range Dew point -100℃–+20℃(90s for single point measurement), error: better than ±0.2℃ Repeat-ability ± 0.1 ℃ Resolution 0.01℃ Display unit ℃, ppm, ℃ P20(convert...
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