Description

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 &Omega, in 1 m&Omega, steps (best suited for calibration of resistance thermometers or bridges), 279303 for high resistance from 0 to 111.1110 M&Omega, in 100 &Omega, steps (suitable for calibration of insulation resistance testers or bridges). Up to 100M&Omega, in 100&Omega, stop Low voltage coefficient Variation of the resistance value is less than ±0.1% at 1M&Omega, and 10M&Omega, steps against 100V application, and less than ±0.04% at 100&Omega, 1&Omega, 10&Omega,, and 100&Omega, 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 1011&Omega, 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.
Weight Approx. 5.3kg 11.7 lbs
Resistance Range 0 to 1,111.110&Omega,
Dial Composition 100&Omega, x 10 + 1k&Omega, x 10 + 10k&Omega, x 10 + 100k&Omega, x 10 + 1M&Omega, x 10 + 10M&Omega, x 10
Resolution 100m&Omega,
Accuracy 100&Omega,, 1k&Omega,, 10k&Omega,, 100k&Omega, Steps - ±(0.05&Omega, + 0.05m&Omega,) 1 M&Omega, and 10M&Omega, Steps - ±0.2% (At temperature 23 ±2°C, humidity below 75%, including residual resistance of approx. 0.05&Omega,).
Max. Allowable Input 100 &Omega, Step 100mA
1 &Omega, Step 30mA
10 &Omega, Step 10mA
100 &Omega, Step 3mA (100 to 600 k&Omega,)
2000 V (700 k&Omega, to 1 M&Omega,)
1 &Omega, Step 2000 V
10 &Omega, Step 2000 V
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