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Decade Resistance Boxes 2786

Models 278610 and 278620 six-dial decade resistance boxes allow quick and easy setting of a wide range of resistance. These resistance boxes are used in combination with voltage or current standards to adjust voltage or current, as dummy load resistances or as an arm of AC bridges.

Specifications - Model 278610

Resistance Range 0.1 to 111,111Ω (Six decade dials)
Residual Residence Less than 23mΩ
Power Rating 0.3W/Step, Within 3W for overall instrument
Maximum Allowed Input 0.5W/Step, 5W for Overall Instrument
Maximum Circuit Voltage 250V
Operating Temperature Range 0 to 40°C ( 32 to 104°F)
Storage Temperature Range -10 to 50°C (14 to 122°F)
Humidity Range 25 to 85% relative humidity
Insulation Resistance More than 500MΩ at 500V DC between panel and circuit
Dielectric Strength 1,500 V AC for one minute
Dimensions 497(W)×116(H)×140(D)mm, excluding protrusions
19.57 x 4.57 x 5.51 in
Weight Approx. 3.5kg
7.7 lbs

 

Specifications - Model 278620

 

Resistance Range 1 to 1,111,110Ω (Six decade dials)
Residual Residence Less than 23mΩ
Power Rating 0.3W/Step, Within 3W for overall instrument
Maximum Allowed Input 0.5W/Step, 5W for Overall Instrument
Maximum Circuit Voltage 250V
Operating Temperature Range 0 to 40°C ( 32 to 104°F)
Storage Temperature Range -10 to 50°C (14 to 122°F)
Humidity Range 25 to 85% relative humidity
Insulation Resistance More than 500MΩ at 500V DC between panel and circuit
Dielectric Strength 1,500 V AC for one minute
Dimensions 497(W)×116(H)×140(D)mm, excluding protrusions
19.57 x 4.57 x 5.51 in
Weight Approx. 3.5kg
7.7 lbs
Model Description
278610 Resistance Range 0.1 to 111,111Ω (Six decade dials); Residual Residence Less than 23mΩ; Weight 7.76 lbs 3.5 kg
278620 Resistance Range 1 to 1,111,110Ω (Six decade dials); Residual Residence Less than 23mΩ; Weight 7.76 lbs 3.5 kg
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