Selecting the Right Fuse Size for Compressors

  • Thread starter Thread starter Mika-Yugo
  • Start date Start date
  • Tags Tags
    Compressors Fuse
Click For Summary
SUMMARY

When selecting fuse sizes for compressors, particularly medical air compressors, it is crucial to consider the nameplate ratings of the electric motor, including steady-state current and startup surge current. In the discussed case, a compressor was initially installed with 40A, 600V fuses, which were later replaced with 60A fuses due to frequent fuse burning. The ongoing issue indicates that the problem may not solely be related to fuse size but could involve the motor's electrical characteristics. Proper evaluation of the motor's specifications is essential for determining the appropriate fuse size.

PREREQUISITES
  • Understanding of electric motor nameplate ratings
  • Knowledge of fuse ratings and their applications
  • Familiarity with startup surge current in electrical systems
  • Basic principles of compressor operation and electrical load
NEXT STEPS
  • Research the implications of steady-state current versus startup surge current in electric motors
  • Learn about the relationship between fuse ratings and motor protection
  • Investigate the impact of compressor load characteristics on fuse selection
  • Explore guidelines for troubleshooting electrical issues in compressors
USEFUL FOR

Electrical engineers, maintenance technicians, and anyone involved in the installation or troubleshooting of compressor systems will benefit from this discussion.

Mika-Yugo
Messages
22
Reaction score
1
What do i have to take into consideration when deciding what fuze sizes are needed for the Medical Air Compressor, or generally any compressor.

Compressors; cooling units, refrigerators, blowing units (cooling systems).
Simply to say any compressor, any kind.

Example; a brand new compressor was installed with 3 fuses (3 phase) 40A, 600V. Fuse is burning. Replacing all 3 fuses with 60A fuses. Still most of the time 1 fuse is burning.

The Company that installed Air Compressor installed originally 40A fuses, than changed it to 60A. Now they say they don't know what to do.

Could someone try to lead me to the right direction. Thank you all, Mika

***** Tomorrow I might to provide you with more info, like name plate info
 
Engineering news on Phys.org

Thread 'uA709 op amp compensation'

Most likely this can only be answered by an "old timer". I am making measurements on an uA709 op amp (metal can). I would like to calculate the frequency rolloff curves (I can measure them). I assume the compensation is via the miller effect. To do the calculations I would need to know the gain of the transistors and the effective resistance seen at the compensation terminals, not including the values I put there. Anyone know those values?
View full post »

Similar threads

Samsung double door fridge overload relay changed 3 times in 2 weeks
  • · Replies 12 ·
Replies
12
Views
4K
Adding 3 new wires to 1 fuse in fuse box in car
  • · Replies 29 ·
Replies
29
Views
20K
Could you ask your friends if you don't know
  • · Replies 9 ·
Replies
9
Views
3K
Could we make a practical solar fridge?
  • · Replies 30 ·
2
Replies
30
Views
3K
This fellow wants to make an electromagnet....
  • · Replies 6 ·
Replies
6
Views
3K
Plumbing Compressed air powered water pressure
  • · Replies 39 ·
2
Replies
39
Views
15K
What Happens After a Star Fuses Hydrogen in Its Core?
  • · Replies 5 ·
Replies
5
Views
4K
HVAC Diagnosing a thermostat issue
  • · Replies 6 ·
Replies
6
Views
3K
What size channel to use to support AC compressor
  • · Replies 9 ·
Replies
9
Views
4K
Cryocooler Stirling 1-stage build, some questions
  • · Replies 11 ·
Replies
11
Views
5K