Difference between copper core and aluminum core of cable used in MTU diesel generator set

1. Low resistivity: the resistivity of aluminum cable is about 1.68 times higher than that of copper cable.

2. Good ductility: the extension rate of copper alloy is 20~40%, the extension rate of electrical copper is more than 30%, and aluminum alloy is only 18%.

3. High strength: the allowable stress at room temperature is 7~28% higher than that of aluminum. Especially under high temperature stress, the difference between the two is very far.

4. Fatigue resistance: aluminum is easy to break after repeated bending, while copper is not easy. The elasticity index of copper is 1.7~1.8 times higher than that of aluminum.

5. Good stability and corrosion resistance: copper core is resistant to oxidation and corrosion, while aluminum core is susceptible to oxidation and corrosion.

6. Large current-carrying capacity: due to low resistivity, the copper cable with the same section than the aluminum cable allowed current-carrying capacity (can pass the maximum current) about 30% higher

7. Low voltage loss: due to the low resistivity of the copper cable, the same section flows through the same current. Copper core cable voltage drop is small. The same transmission interval can ensure higher voltage quality; Under the condition of allowable voltage drop, the copper core cable can reach a longer interval, that is, the power supply covers a large area, which is beneficial to network planning and reduces the number of power supply points.

8. Low heating temperature: under the same current, the heat of the copper cable with the same section is much smaller than that of the aluminum cable, making the operation more safe.

9. Low energy consumption: due to the low resistivity of copper, compared with aluminum cable, copper cable has lower power loss, which is obvious. This is conducive to the improvement of power generation utilization rate and environmental maintenance.

10 oxidation resistance, corrosion resistance: copper core cable connector performance is stable, not due to oxidation and accident. The joint instability of aluminum core cable often increases the contact resistance due to oxidation, heating and accidents. Therefore, the accident rate is much greater than copper cable.

11. Construction lunch:

The copper core is flexible and allows a small radius of curvature, so it is easy to turn and easy to wear the tube;

Copper core fatigue resistance, repeated bending is not easy to break, so wiring easy;

The mechanical strength of copper core is high, and it can accept large mechanical tension, which brings great convenience to construction laying and also invented conditions for mechanized construction.

Summary: To sum up, in addition to the price is expensive, copper cable in all aspects of the aluminum cable cast out of the street, for the sake of safety, or use copper wire cost-effective!

Jiangsu Meiao Power Technology Co., Ltd. is an important manufacturer of diesel generators. Us ao-generator set manufacturers mainly manufacture and selldiesel generator sets, the power of generator sets is 3-3000KW, mobile station is 24-600KW, Marine emergency diesel generator set 24-800KW, gas generator set, heavy oil generator set and all kinds of imported series, special series (trailer, silent speaker, mobile lighthouse, container, etc.) diesel generator Group at the same time engaged in generator set maintenance and generator set accessories after-sales service.