At present in the electric power system the grounding resistance of the earth network is mainly measured by power frequency large current tripole method. In order to prevent power frequency interference during power grid operation and improve the accuracy of measurement results insulation preventive test regulations stipulate that the test current of power frequency high-current method shall not be less than 30A. As a result there are many problems such as bulky test equipment complicated test process high working intensity and long test time. Ground Network Earth Resistance Tester adopts new frequency conversion ac power supply and adopts microcomputer processing control and signal processing and other measures which well solves the anti-interference problem in the test process simplifies the trial operation process improves the accuracy and accuracy of the test results and greatly reduces the labor intensity of test personnel and test cost. Ground Network Earth Resistance Tester is suitable for testing power frequency grounding impedance contact voltage step voltage power frequency characteristic parameters and soil resistivity of various grounding devices. �© measurable substation ground network (4) water and fire power plants microwave station �© (10) the lightning rod (10 �©) multi-purpose machines. Ground Network Earth Resistance Tester adopts different frequency anti-interference technology which can accurately measure data at power frequency of 50Hz under strong interference environment. The maximum of test current is 3A which will not cause excessive potential of grounding device during the test. Meanwhile it also has strong anti-interference ability so it can be measured without power failure. Product nickname Earth grid earth resistance tester earth grid earth resistance tester large earth grid earth resistance tester
Product Introduction The electrical integrity of grounding device refers to the grounding device should be between all kinds of electrical equipment grounding device parts and the electrical connectivity between each equipment that is direct current resistance value also known as electrical conductivity. Reliable and effective connection between grounding lead and ground network is the fundamental guarantee of safe operation of power equipment. Ground down lead is electric power equipment and the connection part of the network in the long running process of electric power equipment joint is likely to be affected due to factors such as moisture rust a node or even the phenomenon such as fracture lead to ground down lead and the main grounding network connection resistance increases which cannot meet the requirements of power regulation problems in the operation of the equipment in safe hidden trouble caused serious ground operation. Corrosion and even fracture may occur to the underground grounding pole and its connecting part of the grounding device. Therefore it is necessary to test the electrical integrity of ground equipment regularly. Electric power industry standard DL/T475-2006 "guidelines for the grounding device parameters measurement regulation electric conductivity connectivity should choose special measuring instrument for 1 m instrumentresolution accuracy is not lower than 1.0 on the Richter scale are unlikely. Our company is based on this The standard developed Ground Continuity Tester is a portable Tester with a high degree of automation which is specially used to test the electrical integrity of grounding devices. Its various technical indicators meet or are superior to relevant standards. Ground Continuity Tester is a simple and convenient operation high precision fast test speed good retesting performance and intuitive reading. It is an ideal special instrument in line with the requirements of regulations which greatly facilitates the development of test projects and improves work efficiency. Product nickname Ground lead down Tester and Ground Continuity Tester
TheBY2671 digital megohm meter (2500V) is composed of medium and large scale integrated circuits. This meter has large output power high short-circuit current value and large output voltage grades (there are four voltage grades). The working principle is as follows: the DC high voltage generated by the battery inside the machine as power supply and converted by DC/DC reaches the L pole from the E pole by the tested product so as to generate a current from E to L pole. After I/V conversion and operation by the divider the measured insulation resistance value is directly displayed by LCD. Product nicknameï¼?Digital megohmmeter megohmmeter digital megohmmeter digital display insulation sheet insulation resistance by megger tester high voltage insulation resistance tester insulation resistance meter insulation characteristics tester electric shake table digital wave table digital display table digital megohmmeter digital megohmmeter high voltage digital insulation resistance tester high voltage insulation resistance tester digital high voltage megohmmeter digital high voltage megohmmeter high Voltage digital megohm meter digital insulation meter digital display insulation meter electronic insulation resistance tester digital insulation resistance tester digital display insulation resistance tester digital display insulation resistance tester insulation resistance meter digital electric megohm meter digital high voltage megohm meter high voltage megohm meter.
The electric power production hold detector using embedded industrial microcomputer real-time operating system digital to analog pointer and digital code display perfect combination the whole list has a variety of output voltage level (2500 v 5000 v 10000 v) strong anti-interference analog pointer and digital synchronous display ac/dc simple operation automatic save measurement results etc. It is an ideal tester for measuring insulation resistance of transformers mutual inductors generators high voltage motors lightning arresters etc. Product nickname Digital Megabyte meter pointer Megabyte meter insulation meter digital high voltage Megabyte meter high voltage insulation resistance tester insulation resistance meter insulation characteristics tester electric shake meter electronic insulation resistance tester high voltage Megabyte meter insulation resistance tester
Application: ETCR2000 clamp ground resistance tester is a major technological breakthrough in traditional grounding resistance measurement. It is widely used in the grounding resistance measurement of electric power telecommunications meteorology oilfield construction and industrial and electrical equipment. When measuring circuit grounding system it is not necessary to disconnect the each connection wire and use auxiliary electrode it is safe and quick easy to use. Can measure the grounding fault which can not be measured by the traditional method because this instrument measure the integrated value of grounding resistance and ground lead resistance apply to the occasion that can not use the traditional method. Features: Apply to all kinds of ground lead.(round bar flat bar angle iron). Non-contact measured grounding resistance safe fast. Without using assistant ground rod. Without interrupting the grounding of the device under test. With double protecting insulation. With strong anti-interference ability and high accuracy. Use 5# alkaline batteries convenient for users.
Supplied with a full hydraulic set including pump, hose, cylinder, gauge, gauge adaptor and wooden case. All master puller sets include a Grip Puller, a Cross Bearing Puller, a Bearing Cup Puller and Bearing Puller Attachment. High quality, forged steel components provide superior reliability and service. Sets include speed crank and adjusting screw for fast contact to work before hydraulic pressure is applied. Master pullers set is a combination of Bearing Pullers set & Grip puller set.
Measurement of electron charge of mass ratio - BRAND - VIJAYANTA, INDIA 1. e/m Experiment, Measurement of electron charge of mass ratio, based on Thomsons method., Model: EMX 01
Frank Hertz Experiment - BRAND - VIJAYANTA, INDIA 1. Frank Hertz Experiment, Model: FH 3001.
Apparatus for the Measurement of Susceptibility of Paramagnetic Solution by Quincks tube method - BRAND - VIJAYANTA, INDIA 1. Apparatus for the Measurement of Susceptibility of Paramagnetic Solution by Quincks tube method., Model: QTX-10 The Apparatus consists of : (a) Quincks tube with Multipurpose stand. (b) Sample : Fecl3. (c) Electromagnet (Tappered Poles ), Model: EMU-50T (d) Constant Current Power Supplies for Electromagnets, Model: CC-50 0 4, Amp. Suitable for EMU-50T (e) Digital Gauss Meter (Range : 0 - 2 K Gauss , 0 - 20 K Gauss), Model: DGM 100 (f) Travelling Microscope. Complete in all respects.
Determination of Plancks Constant by means of LED - BRAND - VIJAYANTA, INDIA 1. Determination of Plancks Constant by means of LED, Model: PCA-01
Electron Spin Resonance Spectrometer - BRAND - VIJAYANTA, INDIA 1. Electron Spin Resonance Spectrometer, Model: ESR - 105
Four Probe set-up for Mapping the Resistivity of Large Samples - BRAND - VIJAYANTA, INDIA 1. Four Probe set-up for Mapping the Resistivity of Large Samples, Model: FP 01
Magnetic Hysteresis Loop Tracer - BRAND - VIJAYANTA, INDIA 1. Magnetic Hysteresis Loop Tracer, Model: HLT 111
Study of Dielectric Constant & Curie Temperature - BRAND - VIJAYANTA, INDIA 1. Study of Dielectric Constant & Curie Temperature of Ferroelectric Ceramics, (Complete in all respects), Model: DEC 01
Four Probe Method Various Type - BRAND - VIJAYANTA, INDIA 1. Resistivity of Semiconductors by Four Probe Method, Model: DFP - 10 2. Resistivity of Semiconductors by Four Probe Method, Model: DFP â?? 20 3. Four Probe set-up for measuring the Resistivity of very low to highly Resistive sample at temperatures up to 2000C with PID controlled oven, Model: DFP - RM
Digital LCR Meter , Hand Held - BRAND - VIJAYANTA, INDIA 1. Digital LCR Meter, Model: LCR 4070 Range: R - 20, 200, 2K , 20K 200K , 2m , 20m L - 20H, 2mH, 20mH, 200mH, 2H, 20H. C 200pf, 2nf, 20nf, 200nf, 2µf, 20µf, 200µf, 2000µf.
Digital Pico ammeter - BRAND - VIJAYANTA, INDIA 1. Digital Pico ammeter, Model: DPM 111.
Digital Nanoammeter - BRAND - VIJAYANTA, INDIA 1. Digital Nanoammeter, Model: DNM 121
Digital D.C. Micro voltmeter - BRAND - VIJAYANTA, INDIA 1. Digital D.C. Micro voltmeter, Model: DMV 001.
Digital Lab Trainer - BRAND - VIJAYANTA, INDIA 1. Digital Lab Trainer, Model: Digi Lab - 203.
