Product Introduction
The ground resistance measuring instrument is a new type of ground resistance measuring instrument which combines the three-end button and four-end button measuring methods by using advanced medium and large scale integrated circuit instead of the traditional manual manual power generation.
The working principle is that the DC/AC converter in the machine changes DC into low-frequency constant current of AC and the circuit is formed by auxiliary ground electrode C and measured object E which generates AC voltage drop on the measured object and is fed into AC amplifier for amplification through auxiliary ground electrode P and then sent to the meter head for display through detection. With the aid of multiplying power switch three different quantity limit can be obtained: 0 ~ 2 �© 0 ~ 20 �© 0 ~ 200 �©.
The earth resistance measuring instrument is suitable for measuring the earth resistance of various devices and the conductor resistance value of low resistance in electric power post and telecommunication railway communication mining and other departments. The table also measures soil resistivity and ground voltage.
Product nicknameï¼?digital ground resistance tester digital ground resistance tester ground resistance ground resistance meter ground resistance meter ground resistance meter ground resistance meter ground resistance meter ground pile ground resistance tester digital ground resistance meter portable ground resistance tester digital ground resistance meter
Product description Earth ground resistance tester is a high-precision testing instrument used in various fields such as substations to test grounding resistance and related parameters.The instrument is of an integrated structure, with a built-in frequency conversion power supply module, and the output power supply is continuously variable in frequency. The frequency can be changed to 45Hz or 55Hz, the high-speed processor core is built in, and the high-end digital filtering technology is adopted, thus effectively avoiding the interference of power frequency electric field to the test and fundamentally solving the difficult problem of accurate measurement under strong electric field interference. Technical index 1 Conditions of use 1 540 RH 80% 2 Anti-interference principle Frequency conversion method 3 Electric source AC 220V 10% allowed generator 4 Measure output current 1A 5A Adjustable 5 Measure output voltage 0V 100V 6 Test power frequency 45, 50, 55, 60, 65HZ single frequency 45 55, 55 65 47.5 52.5HZ Automatic Dual Frequency 7 Output rating 500W 8 Distinguishing rate Grounding impedance 0.0001 Impedance angle 0.0001 9 Precision Grounding impedance 1% reading 0.002 Impedance angle 1% reading 0.02 10 Resistance measurement range 0.001 5 11 Exterior dimensions 370 295 W 225 H 12 Memory size 100 groups support U disk data storage 13 Weight Main engine 13 Kg, ground pile 7 Kg
Overview 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 Introduction 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.
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
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 description Earth ground resistance tester is a high-precision testing instrument used in various fields such as substations to test grounding resistance and related parameters.The instrument is of an integrated structure, with a built-in frequency conversion power supply module, and the output power supply is continuously variable in frequency. The frequency can be changed to 45Hz or 55Hz, the high-speed processor core is built in, and the high-end digital filtering technology is adopted, thus effectively avoiding the interference of power frequency electric field to the test and fundamentally solving the difficult problem of accurate measurement under strong electric field interference. Technical index 1 Conditions of use 15 40 RH 80% 2 Anti-interference principle Frequency conversion method 3 Electric source AC 220V 10% allowed generator 4 Measure output current 1A 5A Adjustable 5 Measure output voltage V100V 6 Test power frequency 45, 50, 55, 60, 65HZ single frequency 45 55, 55 65 47.5 52.5HZ Automatic Dual Frequency 7 Output rating 500W 8 Distinguishing rate Grounding impedance 0.0001 Impedance angle 0.0001 9 Precision Grounding impedance (1% reading +0.002) Impedance angle (1% reading +0.02 ) 10 Resistance measurement range 0.001 5
Earth ground resistance tester is a high-precision testing instrument used in various fields such as substations to test grounding resistance and related parameters.The instrument is of an integrated structure, with a built-in frequency conversion power supply module, and the output power supply is continuously variable in frequency. The frequency can be changed to 45Hz or 55Hz, the high-speed processor core is built in, and the high-end digital filtering technology is adopted, thus effectively avoiding the interference of power frequency electric field to the test and fundamentally solving the difficult problem of accurate measurement under strong electric field interference.
The UT521 is an earth-resistance tester. It is essential for various applications to have a good earth connection, for example, to discharge over-voltage or when lightning strikes. Earth testers work with pins that must be inserted into damp soil. In addition, a connecting wire for the measuring object is included, so you can compare it with the earth. The supplied pins are intended to measure the resistance of the earth to see if it is suitable for inserting an earth pin. The meter can perform both 2 and 3 wire-resistance measurements, and it is also possible to measure earth-voltage.
It mainly tests the surface resistance and volume resistance of rubber.
