How is synchronous reactance for a cable defined?

AI Thread Summary
Synchronous reactance for a cable is discussed in the context of short-circuit impedances, as outlined in section 2.2 of the linked paper. The term "synchronous reactance" is noted as unfamiliar to some participants, indicating a need for clarity on its application. It is emphasized that synchronous reactance is specifically defined for synchronous machines, relating the induced EMF in the stator to the short-circuit current at the same excitation level. The discussion highlights a gap in understanding regarding its relevance to high power motors and generators. Overall, the conversation seeks to clarify the definition and application of synchronous reactance in electrical circuits.
Martin V.
Messages
10
Reaction score
0
How is synchronous reactance for a cable defined?
 
Engineering news on Phys.org
The paper linked has the section 2.2 Determining the various short-circuit impedances.
Hopefully, that will answer your questions. If not, you need to be more specific about which rectance you mean.
 
  • Like
Likes berkeman
Thanks :)
 
Interesting, I'd never heard that term before, "synchronous reactance", but there it is in the paper!
 
  • Like
Likes davenn
berkeman said:
Interesting, I'd never heard that term before, "synchronous reactance", but there it is in the paper!

likewise, but then, am not into high power motors or generators for which this seems to apply toD
 
In my humble opinion, no synchronous reactance is defined for any part of a circuit except synchronous

machine: the ratio between EMF induced in the stator and short-circuit current at the same excitation level.

:wink:
 

Thread 'How might electronics be different if AC voltage was 72V at 45 Hz?'

Hey guys. I have a question related to electricity and alternating current. Say an alien fictional society developed electricity, and settled on a standard like 73V AC current at 46 Hz. How would appliances be designed, and what impact would the lower frequency and voltage have on transformers, wiring, TVs, computers, LEDs, motors, and heating, assuming the laws of physics and technology are the same as on Earth?
View full post »

Thread 'What happens if shielded cable has a short to the shield?'

While I was rolling out a shielded cable, a though came to my mind - what happens to the current flow in the cable if there came a short between the wire and the shield in both ends of the cable? For simplicity, lets assume a 1-wire copper wire wrapped in an aluminum shield. The wire and the shield has the same cross section area. There are insulating material between them, and in both ends there is a short between them. My first thought, the total resistance of the cable would be reduced...
View full post »

Thread 'Why does the amperage go real high if there is a low voltage short?'

I used to be an HVAC technician. One time I had a service call in which there was no power to the thermostat. The thermostat did not have power because the fuse in the air handler was blown. The fuse in the air handler was blown because there was a low voltage short. The rubber coating on one of the thermostat wires was chewed off by a rodent. The exposed metal in the thermostat wire was touching the metal cabinet of the air handler. This was a low voltage short. This low voltage...
View full post »

Similar threads

Is synchronous reactance constant?
Replies
10
Views
5K
Synchronous generator reactance (Sub, transient, SS)
Replies
14
Views
5K
Modelling of tranformer and MV cable for harmonic studies
Replies
11
Views
1K
3-phase synchronous machine => 5-phase synchronous machine
Replies
3
Views
2K
Choosing a pulse capacitor, ESR vs reactance at frequency
Replies
5
Views
2K
Why are synchronous motors grounded with reactance
Replies
8
Views
4K
Determining inductive reactance from a 3-phase AC circuit
Replies
17
Views
3K
Inductive and capacitive reactance
Replies
3
Views
2K
How to synchronize the RF source having delay over time?
Replies
8
Views
1K
Phase Arrangement of Parallel Medium-Voltage Cables
Replies
20
Views
4K

Hot Threads

Recent Insights

Back
Top