Type a keyword to start searching...

Use ⌘K or Ctrl+K to search from anywhere
HV Exit Exam • Set 2 Question 20 of 30

What is the effect of harmonics generated by large High Voltage variable frequency drives (VFD)?

✓

Direct Answer

Option D: Voltage waveform distortion, overheating of transformers/generators, and electronic interference

Harmonics generated by VFDs distort the sinusoidal voltage waveform, causing increased eddy current losses and hysteresis in transformers and generators. This leads to overheating and potential insulation failure. Mitigation is essential under IEC 60092-503 to maintain power quality and prevent premature degradation of sensitive electronic equipment and distribution components.

All Options

A
Cleans contacts
B
Reduces cable size
C
Increases efficiency 50%
D
Voltage waveform distortion, overheating of transformers/generators, and electronic interference (Correct Answer)

Detailed Explanation & Context

Harmonics generated by VFDs distort the sinusoidal voltage waveform, causing increased eddy current losses and hysteresis in transformers and generators. This leads to overheating and potential insulation failure. Mitigation is essential under IEC 60092-503 to maintain power quality and prevent premature degradation of sensitive electronic equipment and distribution components.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).

Advertisement

Practice Full HV Set 2

Test yourself with 30 interactive questions, live timer, and instant score.

Launch Practice Simulator →

Question Discussion & Notes

0

Have a doubt, memory trick, or exam update? Share your insights with fellow mariners.

Leave a Comment / Clarification

By posting, you agree to our Terms & Moderation Policy.

Loading mariner discussions...