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).
|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.
|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|
|Accuracy||100Ω, 1kΩ, 10kΩ, 100kΩ Steps - ±(0.05Ω + 0.05mΩ)
1 MΩ and 10MΩ Steps - ±0.2%
(At temperature 23 ±2°C, humidity below 75%, including residual resistance of approx. 0.05Ω).
|Max. Allowable Input||100 Ω||Step||100mA|
|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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