Lu Qing cable cable calculation method

Categories:Industry dynamic
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Time of issue:2017-05-13
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(Summary description)The current carrying capacity of a power cable refers to the amount of current that a cable line passes when transmitting electrical energy. Under thermally stable conditions, the cable carrying capacity when the cable conductor reaches a long-term allowable operating temperature is called the long-term allowable cable carrying capacity.

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Lu Qing cable cable calculation method

(Summary description)The current carrying capacity of a power cable refers to the amount of current that a cable line passes when transmitting electrical energy. Under thermally stable conditions, the cable carrying capacity when the cable conductor reaches a long-term allowable operating temperature is called the long-term allowable cable carrying capacity.

Categories:Industry dynamic
Author:
Origin:
Time of issue:2017-05-13
Views:4

1 ampacity

Cable current carrying capacity:

The current carrying capacity of a power cable refers to the amount of current that a cable line passes when transmitting electrical energy. Under thermally stable conditions, the cable carrying capacity when the cable conductor reaches a long-term allowable operating temperature is called the long-term allowable cable carrying capacity.

2 tips

Estimation formula

Multiply it by 2.5 and multiply it by nine.

Thirty-five times three-five, both of which are reduced by five.

Conditions are subject to change and discount, and copper at high temperature can be upgraded by 10%.

The number of through-pipes is two-four-four, eighty-six percent full load.

Description

(1) In this section, the current carrying capacity (safety current) of various insulated wires (rubber and plastic insulated wires) is not directly pointed out, but is expressed by "section multiplied by a certain multiple" and obtained through mental arithmetic. It can be seen from Table 53 that the multiple decreases as the cross section increases.

"Multiplying by two and five times nine, and going up by one." What is said is that Yanggu cable of 2.5mm 'and below has various cross-section aluminum core insulated wires, and its current carrying capacity is about 9 times the number of sections. For a 2.5mm 'wire, the current carrying capacity is 2.5 × 9 = 22.5 (A). The multiple relationship between the current carrying capacity and the cross section of the conductors from 4mm 'and above is to line up along the line number, and the multiple is decreased by 1, which is 4 × 8, 6 × 7, 10 × 6, 16 × 5, 25 × 4.

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Shandong Luqing Cable Co., Ltd.

Lu Qing cable cable calculation method

Lu Qing cable cable calculation method