WELCOME TO SHENZHEN COSNEW TECHNOLOGY CO.,LTD
中文简体/English
SHENZHEN COSNEW TECHNOLOGY CO.,LTD 公司logo

Hotline:

+8613651452423

News

Copper discharge flow calculation method

2017-10-19

First, copper and aluminum discharge flow quickly inquiries

Copper bar is a high-current conductive product, suitable for high and low voltage electrical appliances, switch contacts, power distribution equipment, busbar and other electrical engineering, but also widely used in metal smelting, electroplating, chemical caustic soda and other large current electrolytic smelting works. Electrical copper has low resistivity, bending can be large and so on.

Copper busbars, also known as copper busbars, copper busbars or copper busbars, ground copper busbars, are long conductors made of copper with a rectangular or chamfered (rectangular) cross-section and are made of aluminum material called aluminum Row, in the circuit from the transmission current and the role of connecting electrical equipment. The quality requirements of copper bus is GB / T 5585.1-2005 standard.

Copper discharge flow is how much? Copper discharge flow is how to calculate it? Copper discharge flow meter there? What is copper discharge flow? So many questions, we still have to answer it one by one. First of all, to explain what is under the bar. The so-called copper bar is made of copper material, the cross section of rectangular or chamfered (rounded) rectangular conductor, commonly known as copper busbar, copper busbar or copper busbar, copper grounding. The main production process of copper bars include: standard material selection → casting → casting → rolling → billet → pickling → finishing → milling → machining (drilling, bending, tinning) → packaging → storage. Copper is a suitable for high and low voltage electrical appliances, switch contacts, power distribution equipment, busbar and other electrical engineering, but also widely used in metal smelting, electroplating, chemical caustic soda and other large current electrolytic smelting works.

Second, the estimation method:

Single copper bus discharge flow = width (mm) X thickness factor

Double Bus Discharge Flow = Width (mm) X Thickness Factor X 1.5 (Empirical coefficient)

Copper and aluminum can also be based on the square to the number of copper usually should press 5-8A / square,

Aluminum should be 3-5A / square

Third, the commonly used copper bus carrying capacity calculation method:

Copper discharge at 40 ℃ flow = row width * thickness factor

Row width (mm); thickness factor:

Busbar 12 thick when the 20; 10 thick when 18;

Followed by: [12-20,10-18,8-16,6-14,5-13,4-12].

Double-layer copper bar [40 ℃] = 1.56-1.58 single-layer copper bar [40 ℃] (according to the size of the section) 3-layer copper bar [40 ℃] = 2 single-layer copper bar [40 ℃]

4-tier copper [40 ℃] = single-layer copper [40 ℃] * 2.45 (not recommended for such an option, the best alternative with heterogeneous busbars)

Copper row [40 ° C] = copper row [25 ° C] * 0.85

Aluminum row [40 ℃] = copper row [40 ℃] /1.3

For example seeking TMY100 * 10 carrying capacity:

Single layer: 100 * 18 = 1800 (A) [check manual is 1860A];

Double layer: 2 (TMY100 * 10) carrying capacity: 1860 * 1.58 = 2940 (A); [check manual is 2942A];

Three layers: 3 (TMY100 * 10) carrying capacity is: 1860 * 2 = 3720 (A) [investigation manual is 3780A]

All of the above calculations are accurate and fairly close to the manual data.

In addition, copper discharge flow also has a very concise formula:

Single rectangular copper discharge flow = row width * (thickness +8.5) A

For example: 15 * 3 at 40 ℃ carrier flow = 15 * 11.5 = 172.5A

100 * 8 at 40 ℃ carrier flow = 100 * 16.5 = 1650A

Double deck current = 1.5 times single deck current

Three-layer carrying capacity = 2.0 times single-layer carrying capacity

Current carrying capacity (A) 10 13 17 23 30 45 85 110 136 170 216 263 Third, drawer cabinets drawer wire selection criteria

Section (mm²) 10 16 16 25 35 50 70 35 × 2 50 × 2 70 × 2 50 × 3 70 × 3

Current (A) 50 63 80 100 125 160 200 250 300 400 500 60