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Aluminum Wirewound Resistors

Aluminum Wirewound Resistors
Power:70-80w
Resistance Range: 2.0-5.1k
Size:140*40mm
Sectional Area:1.2mm²
Widely used in power supply, transducer, elevator and so on. Aluminum Housed surface with good performance in heat . Nylon wrapped wire with Solder Lug Terminals.
Product Details:


The description of Aluminum Wirewound Resistors



The Contour Drawing of Aluminum Wirewound Resistors:

图片1.png


The Chief Technology Parameter & Contour Dimensions:


Power(w)

With heat sink


Resistance

Range()

Contour Dimension(mm)


Sectional

Area(mm2)


Aluminum radiator panels(cm2)

thick≥3mm

 L1

 L2

 L3

 W

 H

 A

50

2.0-5.1K

68

76

90

40

20

5.5

1.2

824

60

2.0-5.1K

85

98

115

40

20

5.5

1.2

1000

70-80

2.0-5.1K

110

122

140

40

20

5.5

1.2

1000

100

2.0-5.1K

135

148

165

40

20

5.5

1.2

1000

120

5.1-5.6K

155

175

190

40

20

5.5

1.2

1000

150

5.1-5.6K

185

197

215

40

20

5.5

1.2

1000

160

8.2-8.2K

110

122

140

60

30

5.5

2.0

1200

200

4.0-6.8K

130

155

167

60

30

5.0

2.0

3755

250-300

4.0-10K

180

210

230

60

30

4.0

2.0

4755

350-400

4.0-10K

230

245

260

60

30

5.3

2.0

5795

500-600

4.0-10K

285

320

335

60

30

5.3

2.0

5795

700

4.0-10K

350

385

400

60

40

5.3

2.0

5795

800

4.0-10K

358

382

400

61

59

6.5

2.5

5795

1000*

5.0-15K

360

384

400

107

50

6.5

2.5

5795

1200*

5.0-15K

410

434

450

107

50

6.5

2.5

5795

1500*

5.0-15K

435

470

485

107

50

6.5

4.0

5795

1800*

5.0-15K

500

532

550

107

50

6.5

4.0

5795

2000*

5.0-15K

600

630

650

107

50

6.5

4.0

5795


Protect power supply lines


The brake resistor converts regenerated electric energy into thermal energy and absorbs it during braking process, so it won't feed back to the power supply lines and harm it, therefore to protect power supply in stable running state.

 

Resistance ohms selection 
Besides the maximum current of the variable speed drive dedicated brake unit, there is no clear corresponding relationship with the brake resistor selection, the resistance value is chose according to brake torque primarily, and the power is chose through resistance value and utilization rate. But there is a principle that can't be violated: ensure the current flow "Ic" on brake resistor must less than the allowed maximum current of the brake unit, that is R > 800/Ic, 800 means the maximum DC voltage of variable speed drive's dc control part, Ic means the maximum current of the brake unit.


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