The bus duct is made of high-quality T2 electrolytic copper as the transmission conductor, which has high purity, high conductivity, low loss and small heating, which is very suitable for industrial and mining enterprises that need to operate with large current loads, but the device of the bus duct produced by Jinzhan Electric must be fixed devices, therefore, it is only suitable for the use of fixed places, and the power cable of the silicone rubber inverter used in the traditional coal mine underground has the following technical characteristics:
High temperature resistance: The cable can reach 180°C for long-term use and 350°C during short circuit.
Physical and mechanical function: the selection of high-strength tear-resistant silicone rubber materials, the tensile strength before aging ≥ 8.5, the crack elongation ≥ 400%, the tensile strength after aging ≥ 6.5, the crack elongation ≥ 250%, and the mechanical function of the product is greatly improved. The busway is fixed, and although the single-section busway is not malleable, it can be assembled and combined to complete long-distance transmission.
Electrical function: It has excellent electrical insulation function, even when the temperature and frequency change or moisture, the electrical insulation function remains stable, in addition, its corona resistance and arc resistance function is good, and the insulation layer can withstand 2-3 times the peak voltage of the system caused by the high harmonic reflection of the frequency conversion system.
Reduce noise and reduce malfunction: The cable structure is compact and the electrical safety is high, which can reduce the adverse effects of high harmonics in the output of the inverter, reduce the noise of the motor, supply overcurrent misoperation maintenance, and improve the torque efficiency of the motor.
Reducing power loss: Divide a traditional neutral wire into three phases, and the three phases induce the directional voltage, integrate the elements of potential imbalance, ensure the consistency of the electric field phase, and the electric field is balanced again to reduce the power loss. Although the price of bus duct is low, the high-quality insulating film is selected in the product, which ensures the stability and reliability of the whole equipment under the premise of compact structure and volume reduction.
Reduction of electromagnetic radiation: Shielding is a method of completing electromagnetic compatibility and reducing electromagnetic radiation. The copper wire is thinly wound and the copper strip is wrapped with a metal shield, and the shielding surface area coverage is 100%, which effectively intercepts the electromagnetic noise propagation path composed of electrostatic coupling, inductive coupling or alternating electromagnetic field coupling through space, separates the ground wire system of the two parts of the circuit, and blocks the possibility of coupling through impedance.
Flexibility: Silicone rubber has special surface self-lubrication and high flexibility, operating in the harsh environment of high temperature and low temperature, the electrical and mechanical functions of the cable are less affected by the change of bending radius and bending frequency.
Acid and alkali resistance: silicone rubber corrosion resistance function is also good, about low concentration of acid, alkali, salt tolerance function is better, such as 10% sulfuric acid in room temperature impregnation for 7 days, volume and component changes are less than 1%, tensile force and cracking elongation basically unchanged.
Environmental protection: Same as bus duct, silicone rubber is harmless and odorless, and is an environmental protection material. The traditional busway shell is made of aluminum alloy material, which is simple, strong and high, saves costs, and can greatly extend the service life of the busway.
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