Electrical Measuring Instruments: Measurement and Surveys |
Contents
ELECTRICAL SURVEYS | 5 |
ELECTRICAL MEASURING INSTRUMENTS | 12 |
PORTABLE INSTRUMENTS | 29 |
Copyright | |
8 other sections not shown
Other editions - View all
Common terms and phrases
3-phase 5-ampere a-c ammeter a-c voltmeters accuracy adjusted alternating current ampere-hour amperes AMPS binding posts burden calibrated cent chart conductors connected current coil current ranges current transformers d-c instrument determined direct current direct-current effective value electrical measuring instruments electrodynamometer electrolysis employed equipment external shunts frequency Frequency Meter ground resistance impedance indicating induction instru instrument transformers insulation resistance kilowatt lamps load survey magnetic maximum Megger megohms ment milliamperes millivoltmeter millivolts Model motor Movable Iron multiplier obtained ohmmeter ohms operation parallel circuit permanent-magnet moving-coil phase plant pointer polyphase wattmeter portable potential coils potential transformer power factor primary rated ratio reactance Recording Instruments resistors rotation scale secondary self-contained shown in Fig single-phase wattmeters Small Shoe Machines speed struments supply switch switchboard Table Tachometer Tester thermocouple three-phase tion usually volt-amperes voltage drop voltage ranges voltage survey volts watthour meter wattmeter readings watts WESTON Wheatstone Bridge wire zero ΙΟ