Elevator Mechanic Practice Exam

If the reverse phase relay detects a phase loss or phase reversal, what will happen?

1. The elevator will continue to operate normally

2. The elevator will stop and an alarm will trigger

3. The door will lock immediately

4. Nothing will happen

The correct answer is: The elevator will continue to operate normally

The functionality of a reverse phase relay is crucial in ensuring the safe operation of elevator systems. When the relay detects a phase loss or phase reversal, it typically acts to protect the system from damage that could occur due to improper electrical supply conditions. In this context, if a phase loss or reversal occurs, the correct response is for the elevator to stop and an alarm to trigger. This is a safety measure designed to prevent potential malfunctions or hazards associated with incorrect power supply, which could endanger passengers or lead to damage to the elevator's mechanics. While it's important to understand how various systems are designed to react to electrical irregularities, it's also vital to ensure that safety protocols are followed. In this scenario, the elevator's operation would not continue normally under such conditions, as that would pose a risk to both the equipment and the passengers.