Description
Express Transformers offer a range of wire wound power resistor 130 watt with up to 22 ohmic values in the range. Moreover, each resistor is supplied with a tapping band and is cement coated for stability and durability. The resistors are wound on a sturdy ceramic former using nickel/copper wire to BS 115. The stability is ensured by holding the winding in place with a cement coating that prevents the turns from moving and shorting out.
The ohmic values shown in the table below are the maximum values obtainable with each gauge of wire within a tolerance of ±10%. The tapping bands can be used to obtain intermediate values. One band is provided as standard and others can be fitted if required.
The current rating shown produces a temperature rise of approximately 300°C on the surface of the wire when the resistor is mounted vertically in an ambient temperature of 20°C.
For each 15°C increase in the ambient temperature the current ratings are to be reduced by 5%.
In addition, all terminals are nickel silver bands with nickel plated brass screws and nuts and have the facility for either a solder or screw type extra connection.
View our full power resistor range or see examples of our work in the gallery.
Technical Data
| Power (Watts) | 130W | |
| Type Code | ET/130/6- | |
| ohms | amps | |
| Resistor No. | ||
| 1 | 7.50 | 4.16 |
| 2 | 10.40 | 3.52 |
| 3 | 14.70 | 2.99 |
| 4 | 21.95 | 2.44 |
| 5 | 34.90 | 1.93 |
| 6 | 45.00 | 1.69 |
| 7 | 60.00 | 1.47 |
| 8 | 83.00 | 1.25 |
| 9 | 108.00 | 1.09 |
| 10 | 150.00 | 0.93 |
| 11 | 192.00 | 0.82 |
| 12 | 251.00 | 0.71 |
| 13 | 302.00 | 0.65 |
| 14 | 383.00 | 0.58 |
| 15 | 481.00 | 0.52 |
| 16 | 620.00 | 0.45 |
| 17 | 867.00 | 0.40 |
| 18 | 1091.00 | 0.34 |
| 19 | 1531.00 | 0.29 |
| 20 | 2225.00 | 0.24 |
| 21 | 3413.00 | 0.19 |
| 22 | 4370.00 | 0.17 |
Dimensions
| Resistor Type Code |
Dimensions in mm | ||||||
| A | B | C | D | E | F | G | |
| ET/130/6- | 153 | 32 | 194 | 176 | 32 | 28 | 6 |
Resistor Slider Clips
Each resistor is fitted with one slider clip as standard. Extra clips can be supplied on request and should be specified from the following table.
| Clip No. |
Type Code |
Res. No. |
| SC01 | ET/130/6- | 1-22 |
How to order
Please feel free to contact us to discuss your design requirements. Our lead engineer details are listed below and they are very happy to discuss your particular project needs with you.
- Mr Kev Haynes: k.haynes@express-transformers.co.uk
- Mr Chris Atherton: c.atherton@express-transformers.co.uk