Low voltage release and low voltage...

Study

Question 1 of 205eccefa4bacbc34ba4d4835c

Low voltage release and low voltage protection both function to prevent motor damage due to low voltage conditions. What is the main difference between a motor control circuit containing low voltage protection as compared to low voltage release?

Back

Question 1 of 20

5eccefa4bacbc34ba4d4835c

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Low voltage release (LVR) – what happens to the motor when voltage is restored after a power dip or outage • Low voltage protection (LVP) – what happens to the motor when voltage returns, especially with regard to automatic restart and operator safety • How start switches and contactors behave (momentary vs maintained contact) in control circuits

💭 Think About

• When power is lost and then comes back on, in which system (LVR or LVP) could the motor automatically restart without the operator pressing start again? • Which type of system is normally preferred for equipment where an unexpected automatic restart could be dangerous to personnel? • Think about what a momentary-contact start switch does to a magnetic contactor once the coil is energized—does the contactor stay in by itself or does it need the switch held in?

✅ Before You Answer

• Verify which method prevents the motor from restarting automatically after a voltage drop and requires the operator to press start again • Check which option explicitly mentions a momentary-contact start switch, which is commonly used with magnetic starters and holding circuits • Eliminate any choices that confuse overload protection (overcurrent/heat) with low voltage functions (undervoltage/power loss)

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed