As shown in figure "A" of the illustration,...

Question 1 / 2066636eed28f7522a1c51dac8

Question 1 of 2066636eed28f7522a1c51dac8

As shown in figure "A" of the illustration, what is the purpose of the "test button"? Illustration EL- 0178

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Question 1 of 20

66636eed28f7522a1c51dac8

As shown in figure "A" of the illustration, what is the purpose of the "test button"? Illustration EL- 0178

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🔍 Key Concepts

• Thermal overload relay operation and purpose • Difference between test button and reset button on protective devices • How overload relays change state between normally closed (NC) and normally open (NO) auxiliary contacts when tripped

💭 Think About

• Look at what the nearby reset button already does; how would the function of the test button need to be different so both are useful? • Think about how you could safely check that an overload relay will trip without actually overloading the motor or changing the real current. • Consider whether the test button would realistically change the trip setpoint (amps value) or just change the relay’s contact position temporarily.

✅ Before You Answer

• Identify which device part in figure A actually performs the reset function and which one is labeled test button. • Decide whether a test you perform from the front of the relay can measure exact current or only simulate the tripped condition. • Confirm in the choices which options describe simulating a trip versus changing contact state after a real trip or measuring current value.

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Question 1 of 20

As shown in figure "A" of the illustration, what is the purpose of the "test button"? Illustration EL- 0178

The test button is used to reset the now open normally closed relay contacts after an overload trip.

The test button is used to mimic an overload to test the trip function of the overload relay.

The test button is used to reset the now closed normally open relay contacts after an overload trip.

The test button is used to test the actual current trip value of the overload relay.

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Question 1 / 2066636eed28f7522a1c51dac8

Question 1 of 2066636eed28f7522a1c51dac8

As shown in figure "A" of the illustration, what is the purpose of the "test button"? Illustration EL- 0178

Back

Question 1 of 20

66636eed28f7522a1c51dac8

As shown in figure "A" of the illustration, what is the purpose of the "test button"? Illustration EL- 0178

No comments yet

Be the first to share your thoughts!

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

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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