Ключевые слова: ammeter, ampere, analog, background, board, box, breaker, cabinet, circuit, control, current, device, electric, electrical, electricity, electronic, energy, engineer, engineering, equipment, factory, indicator, industrial, industry, instrument, load, machinery, maintenance, manufacturing, measure, measurement, medium, meter, panel, plant, power, protection, safety, substation, supply, switch, switchgear, system, technical, technology, volt, voltage, voltmeter, watt, work,