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Leiying's Earthing Compound have passed the test by Wuhan High Voltage Research Institute, the most authoritative test Lab in China. Pls see another attached document which test report in Chinese Only.
It was used as an earth-electrode backfill to reduce soil resistivity by retaining moisture. The clay consists largely of Ca-Bentonite, It has the ability to hold its moisture content for a considerable period of time and to absorb moisture from the surrounding soil (e.g. from rainfall). This product have high anti-erode that can be protect the earth-electrode( copper boned steel earth rod, chemical earth rods , earth conductors etc) and extend its using Life more much. And Surrounding soil have no pollution in deed.
We supplied 25kgs per bag with waterproof and moisture-proof packing.
Product item No. | Packing | Description& Marks |
LYJZ-1 | 25KGS/Bag | It is mixed with Ca-Bentonite, Flake Graphite Powder, Sodium Carbonate, Coal Powder & Carbon Powder |
Performance characteristic:
1) It is good and stable in resistance reduction because of low resistivity, high water absorption and water holding performance
2) It is better in protection of grounding network, so it can be working effectively for a long time as good in corrosion resistance and stability
3) It is not only work well in small, in medium size and in large grounding networks as reducing resistance, but also it can be good in corrosion resistance and uniform pressure
4) Earthing compound is verified as no pollution in the process of reducing resistance and no harm to human body after checked strictly by environmental department for manufacturing process, operations, sample and applications etc.
5) After this earth compound is be used around earth-electrodes, it is equal to increase the effective cross section of grounding rods for resistance reduction, so it functions well in the aspect of pressure reduction and reduce the step voltage and contact voltage from equipment.
Technical specification:Test Report Translation
No. | Test item |
Standard | Test value | Conclusion |
1 | resistance test in room temperature | ρ≤5Ω.m | ρ=1.76Ω.m | acceptable |
2 | physical & chemical performance (1)dehydration test (2)cold and heat cycling (3)water dipping | After test ρ≤6Ω.m | ρ=3.15Ω.m ρ=1.95Ω.m ρ=1.97Ω.m | acceptable |
3 | impact electric current tolerance | ΔR%≤20% | ΔR%≤3.09% | acceptable |
4 | working frequency electric current tolerance | ΔR%≤20% | ΔR%≤2.89% | acceptable |
5 | PH value measurement | Ph value is within 7-12 | 10.1 | acceptable |
6 | corrosion test from earth Compound to earth-electrode (1)corrosion test from pure earth compound to earth-electrode | surface average corrosion rate≤0.03mm/Y | Round steel:0.0082 Flat steel:0.0014 Zinc bonded round steel:0.0028 Zinc bonded flat steel:0.0026 | acceptable |
(2)corrosion test to earth-electrodes when rooted in ground | average corrosion rate≤0.05mm/Y | Round steel:0.0036 Flat steel:0.0033 Zn bonded round steel:0.0045 Zn bonded flat steel:0.0082 |
Notes: Test item, standard and result for earthing compound in ground
TEST REPORT which tested by WUHAN HIGH VOLTAGE RESEARCH INSTITUTE,if you need translation , welcome contact with us.