Connecting devices for low-voltage circuit for household and similar purposes. Part 2-2. Particular requirements for connecting devices as separate entities with screwless-type clamping units
Electromagnetic compatibility (EMC). Part 4-27. Testing and measurement techniques. Unbalance, immunity test for equipment with input current not exceeding 16 A per phase
State system for ensuring the uniformity of measurements. State special standard and all-union verification schedule for instruments measuring surface roughness parameters Rmax and Rz in range 0,025 - 1600 mkm
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