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IEEE 33

1927 Edition, January 1927

Complete Document

Electrical Measuring Instruments

Includes all amendments and changes through Change/Amendment , January 1927


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W/D NO S/S * ONLY AVAILABLE IN ELECTRONIC FORMAT
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Description / Abstract:

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.