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Chapter 3

Power Measurement

Equipment

Chapter 3 provides an overview of the types of equipment used to
measure electrical power quantities. Specific applications of measurement
equipment are discussed further in the chapters that follow. There are
many different types of equipment used to measure quantities associated
with electrical power.

IMPORTANT TERMS

Upon completion of this chapter, you should have an understanding
of the following terms:

Measurement Systems
Analog Instruments
Comparative Instruments
CRT Display Instruments
Numerical Readout Instruments
Chart Recording Instruments
Volt-Ohm-Milliammeter (VOM)
Meter Movement
d’Arsonval Principle
Multifunction Meter
Single-Function Meter
Meter Scale
Wheatstone Bridge
Unknown Resistance (Rx)
Standard Resistance (Rs)
Wattmeter
Watt-Hour Meter