- Wuhan Guodian Mingke Electric Co., Ltd.
- Main products: Series resonance test device, Transformer tester, Circuit breaker, switch tester, High Voltage Insulation Equipm, Relay Protection Products, Cable and cable fault tester, Arrester and Insulator Test In, SF6 Test Instrument, Oil Testing Instrument, DC System and Battery Test Ins, Ground/Insulation Resistance T, Power Energy Analyzer, Power Energy Analyzer
Home > Products > Circuit breaker, switch tester > TKHL-200PMicro Ohmmeter
TKHL-200PMicro Ohmmeter
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Product Details
| Brand Name | GDMK | Place of Origin | China | |
| Model Number | TKHL-200P |
Product Description
At present conventional QJ44 type double-arm DC bridges are commonly used in power systems to measure contact resistance and the test current of such bridges is only mA level and it is difficult to find defects in reducing the cross-sectional area of the loop conductor. When measuring the contact resistance of the high-voltage switch conductive loop the measured value is several times larger due to the influence of the oil film and the oxide layer between the contacts and the contact resistance value cannot be truly reflected. To this end the latest Ministry of Power Standard DL/T845.4-2004 "General technical requirements for resistance measuring devices: loop resistance tester" and the new version of the verification procedures JJG1052-2009 "loop resistance tester straight resistance test procedures" made a measurement ( Isolation) The measuring current of the contact resistance of switches circuit breakers etc. is not less than DC 100A and the minimum current maintenance time is not less than 60S ensuring accurate test results.
The High Precision Micro Ohmmeter operator panel is ergonomically designed to meet operational habits and uses high frequency switching power supplies and digital circuit technology for the measurement of loop resistance in switch control equipment. The test current is DC 100A and 200A recommended by national standards. The loop resistance can be directly measured under the condition of DC 100A and 200A. The test result is displayed by large-screen LCD LCD and has functions of data storage output printing time setting etc. and 50A 150A gears for users to choose; custom Test time the maximum setting time is 599S which is larger than the standard 60S; it is a very stable contact resistance tester with a resolution of 0.01μΩ in China and its performance exceeds the imported high current micro-ohmmeter. It meets the requirements of on-site high-voltage switch maintenance of electric power and power supply departments and loop resistance test of high-voltage switch factory.
Product nickname：Contact resistance tester switch loop resistance tester contact loop resistance tester contact (loop) resistance tester High Precision Micro Ohmmeter
1. High current: High Precision Micro Ohmmeter adopts new power supply technology which can continuously output large current for a long time overcomes the shortcomings of pulsed power supply instantaneous current can effectively penetrate the switch contact oxide film and obtain good test results.
2 high stability: under severe interference conditions the last data of the LCD screen can be stable±Within 1 word range the reading is stable and repeatable.
3 high precision: using dual high-speed 16-bit Σ-ΔAD sampling new digital signal processing technology the highest resolution reaches 0.01μΩ is currently a very stable contact resistance tester with a resolution of 0.01μΩ in China the performance exceeds Imported high current micro-ohmmeter.
4. Intelligent: Using imported high-performance CPU the system automatically switches the range according to the signal size during measurement ensuring the test accuracy of the product. The over-temperature protection circuit can automatically stop the output current when the instrument exceeds the set temperature to ensure the safe use of the instrument.
5. High quality: All key components are imported components. The temperature compensation circuit is designed to effectively eliminate the influence of ambient temperature on the measurement results. The use of military connectors enhances the anti-vibration performance.
6 can be powerful: the current can be freely selected in 50A 100A 150A 200A the test time can be arbitrarily set within 5s ~ 599s overcoming the defects of other similar instruments can not set the measurement time or the continuous working time is too short Far exceeds the performance of other similar instruments.
7. Friendly man-machine interface: It is convenient and quick to input data by rotating the mouse. It can set the date and time of the instrument independently save the measurement data in real time and print the measurement result in real time.
8. USB transfer: The measurement data is transferred to the U disk through the USB interface and the measurement data is further analyzed and processed in combination with the host computer software.
9 easy to use: small size light weight easy to carry.
| Measuring range | 0～2999.9μΩ |
| Resolution | 0～99.99，0.01μΩ ; 100.0～2999.9，0.1μΩ |
| Test current | DC 50A 100A 150A 200A four-speed fixed output |
| measurement accuracy | ±(0.5% rd+2d) |
| Continuous working time | 5s～599s |
| Display method | Large screen Chinese LCD display |
| communication mode | U disk dump |
| Working power | AC220V±10% 50Hz |
| Total power | 1200W |
| Maximum storage record | 200 |
| working environment | Temperature -10 ° C ~ 40 ° C humidity：≤80%RH |
| Dimensions | 380×310×260 mm3 |
| Weight | 11kg(No attachments) |
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- Wuhan Guodian Mingke Electric Co., Ltd.
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