Publicidad
Idiomas disponibles
Idiomas disponibles
1. Introduction
Large Grounding Grid Earth Resistance Tester is a multi-purpose model to test the grounding
impedance, grounding resistance and soil resistivity of substation ground network(4Ω), water and
fire power plant, microwave station(10Ω), lightning arrester(10Ω), communication base station and
other large ground network, The instrument adopts the new frequency type conversion AC power
supply, microcomputer processing control and signal processing measures, which solves the anti-
interference problem in the test process, simplifies the test operation process, improves the
accuracy of the test results, and greatly reduces the labor intensity and test cost of the test personnel.
Large Grounding Grid Earth Resistance Tester adopt super strong automatic frequency
conversion anti-interference technology, can accurately measure the power frequency data of below
50Hz under strong interference environment. It is suitable for testing the power frequency grounding
impedance, grounding resistance, auxiliary machine and other power frequency characteristic
parameters of various grounding devices, measuring the on-off impedance or resistance between
grounding devices, and measuring the soil resistivity.
The instrument is manufactured according to the Resistance Tester for JJG984-2004 Grounding
Conduction Verification Regulation, DL/T475-2006 Grounding Device Characteristic Parameters
Measurement Guidelines, DL/T845.2-2004 Resistance Measuring Device General Technical
Conditions Part II: Power Frequency Grounding Resistance Tester.
Test current with two measuring model:
Internal power supply mode: Max. Current 5A, will not cause the potential of the grounding device
to be too high during testing. At the same time, also has strong anti-interference ability, so can be
measured without power off.
External power supply mode: Max. Current 30A, can accurately measure ground networks
various current with different requirements.
2. Performance Feature
2.1. Large touch LCD is clear and obvious, easy to operate.
2.2. Touch colorful screen input, convenient to search.
2.3. The external power mode can be extended to large current measurements.
2.4. Adopt automatic double sided combination advanced frequency conversion technology, use
45Hz and 55Hz two frequency measurement, at the same time there are multiple frequency
conversion for choice.
2.5. Strong anti-interference ability, adopts automatic frequency conversion method to measure,
and matchs with modern software and hardware filtering technology, so that the instrument has high
anti-interference performance and the test data is stable and reliable.
2.6. High accuracy, baic error only 0.005Ω, can be used to measure the large grounding grid which
the grounding impedance is very small.
2.7.Measure the impedance or resistance of the grounding device
2.8.Measure the continuity impedance or resistance of the grounding device
2.9.Measure earth voltage, step voltage, voltage gradient and others characteristic parameters.
1
Publicidad
