Function of ground wire: High voltage ground wire is used in the construction of lines and substations to prevent electrostatic induction from nearby charged objects and ensure safety in the event of electric shock or when the switch is accidentally closed.
The ground wire is a wire directly connected to the ground. It may also be called a safety return line. In case of danger, it directly transfers high voltage to earth, which is considered a lifesaver.
Structure of high voltage ground wire: The portable high voltage ground wire consists of an insulated operating rod, a conductive clamp, a short circuit line, a ground wire, a ground terminal, a bus clamp and a ground clamp.
High voltage grounding wire production process: excellent production process - the wire clamp and grounding clamp are made in aHigh quality die-cast aluminum alloy; The operating rod is made of epoxy resin color tube, with good insulation performance, high strength, light weight, bright colors and smooth appearance.
The soft copper grounding wire is made of several strands of high-quality soft copper wires and is covered with a transparent soft and high temperature resistant insulating jacket, which can prevent the wear of the earthing copper. wire during use. Copper wire reaches fatigue testing requirements are necessary to ensure worker safety during operation.
Earth wire specifications: According to ministerial regulations, the earth wire should be made of bare copper flexible wire of 25mm2 or more.
Detailed information:
(1) When hanging the ground wire: connect the ground clamp first, then the electrical clamp When removing the ground wire, you need to remove the electrical clamp first in accordance with the instructions; follow the procedure, then remove the ground clamp.
(2) Installation: Fix the double-eye copper nose of the grounding soft copper wire to the corresponding position of the power clamp on the ground rod (the power clamp has fixed and movable types), and connect the ground wire. The single-eye copper nose on the conjunction is fixed on the ground clip or ground pin to form a complete set of ground wires.
(3) Check whether the voltage level of the ground rod is consistent with the voltage level of the operating equipment.
(4) Flexible copper grounding wires are available in split phase and combined types, and grounding rods are availablein flat mouth and double hook type pliers.
Baidu Encyclopedia - Grounding wire
a)
Railroad tracks, pipelines and metal abutments must be at their start, end and connection points. And anti-static grounding is provided every 50m and the crane pipe should be grounded at both ends.
b)
The railway tracks in the factory area must be isolated from the outside tracks by insulating devices in two places. The distance between two insulating devices must be greater than the length of a train.
c)
Parallel or intersecting pipes with a clear distance less than 100 mm must be bridged with metal wires every 20 m.
d)
Valves, flanges, elbows and other pipe fittings that cannot maintain good electrical contact should also be bridged. The connecting wire can be made of round steel with a diameter of'at least 8 mm.
e)
Tank trucks must be equipped with temporary grounding clamps to prevent static electricity.
f)
Flammable oil, combustible oil andThe roof of a natural gas floating storage tank shall be connected to the tank body by flexible jumpers, and it shall not be less than two places. The bonding wire may be stranded steel wire or soft copper wire with a cross section of at least 25 mm^2.
g)
The shielded cable for floating electrical measurement must be buried in the ground and its length must not be less than 50 m.
h)
Reliable electrical connections must be ensured between the joints of the steel plates of the metal tank body, between the tank roof and the tank body, and between all pipes and valves. and the tank body.