Questions tagged [insulator]
The insulator tag has no usage guidance.
16
questions
1
vote
1
answer
223
views
Food for thought: Which person has truth in this discussion on capacity and AC? [closed]
I have stumbled upon interesting discussion in the commentary section regarding safety of electrical engineering in home environment.
person1: AC voltage 'flows' even through insulator, fact.
person2:...
5
votes
6
answers
2k
views
Why is a temperature rise within an electrical component or assembly measured in kelvin?
I came across an IEC standard which uses Celcius as a temperature unit for maximum temperature limit E.g. IEC 60085 states class Y insulator maximum temperature limit to be 90°C, average ambient ...
0
votes
1
answer
40
views
Do the number of corona rings affect corona formation?
Does having two corona rings instead of just one on the line end of a tension insulator string help with corona formation?
1
vote
0
answers
81
views
Is the ceramic insulator on old espresso machine heating elements absolutely necessary?
I've spent several hours trying to understand if these ceramic insulators are really necessary on some heating element end pins. There are some terminal pins where they are absolutely needed, usually ...
5
votes
1
answer
1k
views
Is there a material that conducts heat but is also an electrical insulator?
I know that, most of the time, heat transfer and conductance go hand in hand. But is there some material that is an electric insulator while being good (or at least not that bad) at heat transfer?
I ...
0
votes
0
answers
545
views
PTC Heating Element Watt and Insulation Film | Hot Melt Glue Gun
Question 1
If two glue guns of 20 watts and 40 watts are receiving direct current from the electric board (no adapter). Then what makes one gun 20 watts and the second one 40 watts. Is it related to ...
1
vote
1
answer
112
views
Why transmission insulators have a particular shape?
What I have gathered is that to increase the creepage distance (the shortest distance along the surface of solid insulating material between two conductive parts) they have designed a particular shape....
0
votes
1
answer
95
views
Protection of insulators on overhead transmission lines
Protection of insulators on overhead transmission lines.
Is an arcing horn the same thing as a coordination gap?
2
votes
4
answers
479
views
Heating a 10W, 22-ohm ceramic resistor on a standard perfboard
I have a small project that consists of controlling the temperature of a 10 W, 22-ohm ceramic resistor. The circuit is assembled on a regular perfboard; I could just make use of both legs and keep the ...
0
votes
1
answer
722
views
for calculating the number of insulator disks needed for creepage is line to line voltage or phase voltage used?
For example, I am calculating the number of disks required for a 330kV line. Assuming medium pollution (20mm/kV) and each disk having 405mm would my number of disks be 17 (based off line voltage) or ...
0
votes
4
answers
296
views
Can I use an insulator as heating element?
If the resistance is what make heating elements heat up , then is it ideal for me to use something close to an insulator as a heating element?
1
vote
1
answer
289
views
Can you use 'Rubber,' Specifically Liquid Electrical Tape Between The Plates of a DIY Capacitor
The above is pretty much all there is to the question. By "can you," I mean will it be properly effective / are there any tips? If not, why? It seems that this ought to work, but I can't ...
0
votes
1
answer
30
views
what glue should i use when making 5, 12 V connectors (plugs)?
At the moment I'm making 5.5 x 2.1 mm DC connectors. The connectors are typical solder lug types like you'd find at the big online stores. I'd feel better about these if I could insulate the lugs -- ...
0
votes
1
answer
372
views
Is Mica non-conductive?
Are mica flakes like ones found in makeup and body lotions completely non conductive and should I be worried if it gets inside the components of my computer? Or should I be more concerned about ...
0
votes
3
answers
703
views
Why are there metal links between the discs of an overhead line insulators?
They form interlink capacitance and reduce the string efficiency. A lot of other non metallic strong materials can be used instead.