Decade Resistance Boxes 2793 #279303
Model 2793 resistance box is high-accuracy, stable DC variable resistor with 6 dials and is available in two styles: 279301 for medium resistance from 0.1 to 1,111.210 Ω in 1 mΩ steps (best suited for calibration of resistance thermometers or bridges); 279303 for high resistance from 0 to 111.1110 MΩ in 100 Ω steps (suitable for calibration of insulation resistance testers or bridges).
- Up to 100MΩ in 100Ω stop
- Low voltage coefficient
Variation of the resistance value is less than ±0.1% at 1MΩ and 10MΩ steps against 100V application, and less than ±0.04% at 100Ω 1Ω 10Ω, and 100Ω flaps against 10V application. - Shock and vibration proof construction
- Easy-to-read in line indication
- Best suited for calibration of insulation resistance testers and bridges
Specifications
| Dielectric Strength | 2,500 AC for one minute between Panel and Circuit | ||
|---|---|---|---|
| Insulation Resistance | More then 1011Ω at 1,000V DC between panel and circuit | ||
| Dimension | 497（W）×116（H）×140（D）mm, excluding protrusions 19.57 x 4.57 x 5.51 in. |
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| Weight | Approx. 5.3kg 11.7 lbs |
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| Resistance Range | 0 to 1,111.110Ω | ||
| Dial Composition | 100Ω x 10 + 1kΩ x 10 + 10kΩ x 10 + 100kΩ x 10 + 1MΩ x 10 + 10MΩ x 10 | ||
| Resolution | 100mΩ | ||
| Accuracy | 100Ω, 1kΩ, 10kΩ, 100kΩ Steps - ±(0.05%＋0.05Ω) 1 MΩ and 10MΩ Steps - ±0.2% (At temperature 23 ±2°C, humidity below 75%, including residual resistance of approx. 0.05Ω). |
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| Max. Allowable Input | 100 Ω | Step | 100mA |
| 1 Ω | Step | 30mA | |
| 10 Ω | Step | 10mA | |
| 100 Ω | Step | 3mA (100 to 600 kΩ) | |
| 2000 V (700 kΩ to 1 MΩ) | |||
| 1 Ω | Step | 2000 V | |
| 10 Ω | Step | 2000 V | |
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