JLDQ-2-10KV cable branch box grounding wire Special grounding wire for cable branch box Ring network cabinet grounding wire
1、 Product Introduction
JLDQ-2 10KV cable branch box ground wire 10kv ring network cabinet special grounding wire multi-purpose series The product is advanced in design, reasonable in structure, perfect and reliable in performance, and easy to use. It is an ideal product for upgrading the power industry at home and abroad, and a necessary safety tool for power plants, substations, industrial and mining electrical departments
2、 Product classification
product It can be divided into Metric 12 # nut, 14 # nut, 16 # nut and three standard contact pins of the ring main unit can meet the requirements of the grounding link of the cable branch box as well as the selection and use of various equipment 。 Other voltage levels can be customized. Abundant supply, fast shipment!
This ground wire Passed the type test in the electric power safety instrument testing center of electric power industry, and the main technical indicators meet ISO9001:2000 electric power industry standard and international IEC technical standard. The product has passed the provincial appraisal and the examination of the power industry, and is approved to be popularized and used in China.
Usage and precautions: According to the power industry DL/T879-2004 Technical Regulations
3、 Use and maintenance of grounding wire of sub branch box:
Before using the personal security line, the power supply should be checked to confirm that the power has been cut off, and the power supply should be carried out after confirming that there is no voltage on the equipment. First connect the grounding clamp to the grounding grid or flat iron piece, and then use the grounding rod to fasten the conductor end wires on the equipment conductors. When removing the short circuit grounding wire, the sequence is exactly opposite to the above. The distance between the installed short circuit grounding wire and the live equipment shall not be less than the new value specified in the Electric Power Safety Work Regulations in consideration of the impact of the grounding wire swing. It is strictly prohibited to use winding method for grounding short circuit without wire clamp. Portable short circuit grounding wire shall be kept properly. Before each use, carefully check whether it is in good condition, the soft copper wire is not exposed, and the nut is not loose, otherwise it cannot be used. The inspection cycle of portable short circuit grounding wire is once every five years, and the inspection items are the same as factory inspection. The portable short circuit grounding wire passing the test shall be judged according to the size of short circuit current and appearance inspection after being subjected to short circuit, and generally shall be scrapped.
4、 Technical indicators
Environmental conditions for use
（1） Ambient temperature: -25°C -70°C
（2） Relative humidity: ≦100％
（3） Applicable occasions: indoor and outdoor rain free weather
V Principles for selecting nuts for appliances
In the actual use process, the appropriate nut model should be selected according to the model of the internal contact position of the branch box under the power environment, and the nut should be grounded before being connected to the contact point for use.
VI 、 Comparison Table of DL-II High Voltage Grounding Wire Selection
Voltage level Square number of grounding wire Resistance per meter
(KV) (mm2) ( mΩ )
10 25 ＜0.79
35 25 ＜0.79
110 35 ＜ zero point five six
220 50 ＜0.40
seven 、 Electrical performance of grounding wire operating rod
Specifications Leakage test Leakage current Withstand voltage
(KV) (KV) (μα) （KV）
10 12 ≦10 40
35 42 ≦10 150
110 88 ≦10 250
220 176 ≦10 450
Note: withstand voltage time is After 1min power frequency withstand voltage, there shall be no local heating, flicker, breakdown deformation, etc.
Our company mainly produces Electroscope 、 ground wire 、 Security fence 、 Insulation pad 、 Personal protective equipment 、 Signboard 、 Insulated step stool 、 Safety tool cabinet And other products
contact number: thirteen billion six hundred and three million two hundred and eleven thousand three hundred and sixty-nine
