Quiz - SOFT STARTERS ADXL... Series

1. Final quiz.

In this section, test your knowledge of the e-learning course you have just followed. Are you ready? Then start and don't worry about making mistakes, repeat the test as many times as you want.

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* 1. If it is essential to start the motor, regardless of the potential for malfunction, all protections and alarms can be inhibited (including the fire system, for instance).

True

False

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* 2. Even thought not mandatory, a line contacor upstream the soft starter is strongly suggested for the following purposes. Choose the right ones.

Disconnect the soft starter from the supply in case of fault

Protection of the soft starter thyristors

Safety of the personnel

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* 3. Soft starters are devices that allow

a gradual motor starting

a direct motor starting

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* 4. The range of soft starters ADXL series reaches up to ...

162 A

320 A

250 A

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* 5. The soft starter continuously monitors its own temperature so that it only operates when the temperature is acceptable.

False

True

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* 6. Soft starters are devices that allow gradual start of electric motors, preventing a series of mechanical and electrical problems. Direct starts (DOL) in fact often cause:

stresses that reduce the useful life of the motor and the system

high initial current absorption that can cause voltage drops on the power supply network

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* 7. In the video concerning the monitoring of an ADXL soft starter via Xpress software, which communication accessory was used?

EXC1042

CX01

EXCRDU1

CX02

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* 8. With the ADXL soft starter the motor can be started with different types of starting ramps

current ramp, frequency ramp, torque ramp

voltage ramp, current ramp, torque ramp

voltage ramp, frequency ramp, torque ramp

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* 9. When switched on for the first time, the ADXL soft starter shows a quick guided configuration autosetup with only 6 parameters: language, nominal current, network frequency, cosphi, type of application and duty level.

False

True

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* 10. The kick start function is useful

in applications with loads that have consistent first friction forces,

in applications where you want to avoid water hammer

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* 11. What are the purposes/advantages of a soft starter bypass?

Reduction of the power dissipation (energy saving) and of the heating

Reduction of the harmonic content

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* 12. The heart of a soft starter is represented by a group of

zener diodes

bridge rectifiers

impedences

thyristors