Product Specifications
| Markets: |
North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
Product Description
1. Principle of the tester
The tester abandons the traditional way of making power by artificial, uses advanced large scale integrated circuits, applies DC / AC transformation technology, makes three side buttons, four-terminal measurement button to combine into a model of the new grounding resistance measuring instrument.
The principle of the tester is to make DC into AC low-frequency constant current by the DC / AC converter inside, through the auxiliary grounding electrode C and E composition of the measured object circuit to generate AC voltage drop measured object, sent by the auxiliary grounding electrode P AC amplifier and then displayed through the detector head into the table. With magnification switch, available in three different capacity limits: 0 ~ 2Ω , 0 ~ 20Ω , 0 ~ 200Ω .
2. Application
The tester applies post and telecommunications, railway, telecommunications, mining and other sectors of the grounding resistance measurement of the various devices and the measurement of low resistance of the conductor resistance; This tester can also measure soil resistivity and ground voltage.
Main features
* the structure of high strength aluminum alloy case, the circuit to prevent the frequency, radio frequency interference detection method using phase-locked loop tracking and accompanied by synchronous switched capacitor filter, the instrument has good anti-jamming capability.
* use of DC / AC technology will transform the low-frequency constant DC current into AC for the measurement.
* Allow auxiliary grounding resistance in the 0 ~ 2kΩ (RC), 0 ~ 40kΩ (RP) between the change not affect measurement results.
* No manual adjustment of the instrument balance, 3 (1 / 2)-bit LCD display, in addition to resistance measurement, it can also measure low resistance conductor resistance, soil resistivity and the AC ground voltage.
* Should the test loop unreasonable header displays "1" overflow, consistent with conventional measurement practices.
II. Technique Data
1. Operating Conditions
Ambient temperature: 0 ~ +45C
Relative humidity: ≤ 85% RH
2. Measuring range and the constant value (RMS)
Resistance: 0 ~ 2Ω (10mA), 2 ~ 20Ω (10mA), 20 ~ 200Ω (1mA)
Voltage: AC 0 ~ 20V
3. Measurement accuracy and resolution
Accuracy: 0 ~ 0.2Ω ≤ ± 3% ± 1d
0.2Ω ~ 200Ω ≤ ± 1.5% ± 1d
1 ~ 20V ≤ ± 3% ± 1d
Resolution: 0.001Ω , 0.01Ω , 0.1Ω , 0.01V
4. Errors caused by auxiliary earth resistance and ground voltage measurement
* Allow auxiliary grounding resistance RC (C1 and C2 between)
0 ~ 2Ω , 2 ~ 20Ω ≤ 1kΩ
20 ~ 200Ω ≤ 2kΩ
RP (P1 and P2 between) <40kΩ Error ≤ ± 5%
* Allow to voltage (RMS frequency) ≤ 5V error ≤ ± 5%
5. Power
Maximum power dissipation≤ 2W
DC: 8 × 1.5V (AA, R6) Battery
AC: 220V/50Hz
6. Size and weight
Host Size: 220mm × 200mm × 105mm
Host Weight: ≤ 1.4kg
Wuhan Goldsol Co. Ltd. Is the professional manufacturer of power test equipment. The factory has gathered a number of professional technicians and staffs with high caliber guided by the principles of man-orientation, which possesses high design, development and manufacturing capabilities. By relying on the talent advantages and through constant technological innovations, some products of the factory currently have reached the leading position among the same industries in the world.
The factory was backed by fine credit, technological advantages, excellent products and complete after-sales services.
The VLF (Very Low Frequency) Hipot Tester is the new development product, the production has got the State Patent of Invention (SN no. 200710152385-Ultra low frequency high-pressure generator).
The factory has been audited by the SGS Group(SGS No. QIP-ASI129028), You're welcomed to contact us for more information!
