INTRODUCTION

Throughout this module, you have developed a strong foundation in electrical principles, from understanding voltage, current, and resistance to wiring and troubleshooting various electrical components. You have learned how to read schematics, wire circuits, measure electrical values, and apply Ohm’s Law. You have also explored key components such as relays, transformers, switches, and power supplies, as well as how to calculate power, amp load, and power factor. This final assignment brings all of these concepts together as you apply your knowledge to calculate the power consumption of a DC relay coil—an essential skill for ensuring electrical efficiency and system reliability in automated and manufacturing environments.

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OBJECTIVE

Use power and power factor to calculate the power of a DC relay coil.

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MATERIALS + TROUBLESHOOTING REFERENCE PAGES

Basic Electrical Trainer
Lockout Tagout
Power Supply
24 VDC SPDT Relay
8-Pin Relay Socket
Wire (18 AWG Green, 18 AWG Blue, 18 AWG Brown)
Wire Colors

Tools:

Multimeter
Extech Clamp Meter
Wire Strippers
4-in-1 Screwdriver

Reference Pages:

Units
DC Voltage
Current

Drawing AMAR-1200-13 as shown or AMAR-1200-13 - DC Relay Coil with Switch.pdf

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LAB INSTRUCTIONS

In this module, you have learned about power, power factor, transformers, and more. Now, we are going to spend some time learning about relay coils. Electromagnetism is central to the idea of relays. Relays are switches that use electromagnets to control the switch position.

Instructions

View the lab example video, and then perform the lab.

Wire up the circuit per drawing AMAR-1200-13.
Measure the voltage across the relay.
Measure the current through the relay.
Calculate the power used by the relay, and give the correct units for power.
Answer the quiz questions below.

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SUBMISSION

After completing the lab, answer the questions in the quiz below. You will not be able to answer the quiz questions if you have not done the lab.