Electrical Measuring Instruments: Measurement and Surveys |
Contents
ELECTRICAL SURVEYS | 5 |
ELECTRICAL MEASURING INSTRUMENTS | 12 |
PORTABLE INSTRUMENTS | 29 |
Copyright | |
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Common terms and phrases
accuracy adjusted ammeter amperes AMPS applied burden calibrated capacity cause cent chart circuit coil conductors connected cost cover current ranges current transformers cycles demand designed determined device direct effective efficiency electrical electrical measuring employed equipment errors external field follows frequency give given ground impedance indicating induction industrial instru insulation lamps light load losses Machines magnetic maximum means measuring measuring instruments Megger ment meter method milliamperes millivoltmeter Model motor mounted moving multiplier necessary obtained ohms operation phase plant pointer polyphase portable position potential transformer power factor primary proper rated ratio readings recording resistance rotation scale secondary selected self-contained sensitivity shown in Fig shunt single single-phase SOURCE speed standard suitable supply surveys switch switchboard Table terminals tion turn usually volt-amperes voltage drop voltmeter volts watthour wattmeter watts windings wire zero ΙΟ