Wheelchairs. Part 21. Requirements and test methods for electromagnetic compatibility of electrically powered wheelchairs and scooters, and battery chargers
State system for ensuring the uniformity of measurements. State special standard and state verification schedule for means of measuring magnetic induction of constant field in the range of 2-10 T for temperature range from 4,2 to 300 K and from 0,1 up to 2 T for the range from 4,2 to 77 K
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