Low voltage distribution systems up to 1000 V a. c. and 1500 V d. c. Electrical safety. Equipment for testing, measuring or monitoring of protective measures. Part 3. Loop impedance
Rectangular iron all-cast moulding boxes having inside dimensions: length from 2400 to 3000 mm, width from 1600 to 2000 mm, height 700; 800 mm. Construction and dimensions
Technical condition monitoring of the unique buildings and constructions. Rules of design and installation of permanent systems (stations) of monitoring
