IEEE 33 Electrical Measuring Instruments
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The Institute of Electrical and Electronics Engineers, Inc.
Electrical Measuring Instruments
N 33
Annotation
The standards in this section apply to the following kinds of indicating electrical instruments for direct current and for alternating current:
(1). Ammeters
(2). Voltmeters
(3). Wattmeters
(4). Reactive Volt-Ampere Meters
(5). Frequency Meters
(6). Power-Factor, Reactive-Factor and Phase-Angle Meters
(7). Synchroscopes
These standards are not intended to apply to indicating instruments provided with arrangements for curve drawing, contact making, etc. They do not apply to the following kinds of instruments:
(a) Small instruments of types and sizes which are used where low cost is essential; for example, small polarized-vane ammeters used on automobiles, batterycharging outfits, etc.
(b) Instruments constructed for very special requirements.
Автоматический перевод:
Электрические измерительные приборы
Стандарты в этом разделе относятся к следующим видам указания на электрические инструменты для постоянного тока и для переменного тока:
