Electrical coil resistance measuring R401 (R 401, R 401, p401, p-401, p 401)
The coil of electrical resistance measurement of R401 cast microwire in glass insulation is used as a measure of electrical resistance in DC and AC. Application of coils is shown in Table. 1. P401 coils used at temperatures from 15 to 30 ° C and relative humidity of 80%.
In terms of resistance to mechanical impact devices coil of electrical resistance measurement R401 are tryaskoprochnym (group 1).
The main technical characteristics are given in Table. 2.
The time constant of the coils P401 is 7 × 10 -6 sec.
Overall dimensions of the coils P401 - 115h125h260 mm, weight of 2 kg.
Coils of cast microwire placed in a metal cylinder that serves as an inner screen. On top of the coil cover is worn at the same time serving as an external display. The side surfaces include grounding clips.
The minimum probability of failure-free operation of the device coil of electrical resistance measurement R401 per 500 parts of the test is not less than 0.85 at a confidence level of 0.8.