AC Hipot Testing Electric motor to Failure
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- Опубліковано 23 січ 2017
- AC hipot testing a 6.6 KV rated, 3 Phase AC electric motor to failure. Final fail was on the lead cables going into the frame at about 25 to 30 KV AC. Same location as a previous spark that occurred while DC testing at 48 to 52 KV DC.
This is what every electrical device looks like in video games! Electricity shooting out literally everywhere!
Half-Life's Lambda Core!
That would have been beautiful with the lights off.....
n10cities lights off and some night club music
Giggity
yep bad insulation, haha we got two old school hand held hipot testers, looks like you had the settings pretty high awesome video . using the hi pot is one of my favorite parts of my job as a motor service tech
Is it normal to see these sparks in Hipot test perticularly at 2U+1KV? I have seen the sparks during hipot test at 23KV, but not for lesser voltage.
Why doesn't it has the rotor? This looks like it was eating lots of AMPS!
The electricity looks like it was added in a video editor but it's not, that is amazing.
I can't see something like that, it makes my heart ache. Large electric motors should be given special treatment. Who feels with me?
It's true..
This is a Hi pot test, this should happen and the results should be given to the manufacturer.
Nah, it's just a simple machine
Agreed...all that wasted potential tsk tsk tsk
Ikr made alot of peoples lives different
Were you using a machine to achieve that voltage, or just some kind of transformer.
We have a High Voltage AC Hipot tester, which is pretty much just a large transformer with a couple variac transformers in line to adjust the voltage from 0 upward as the dial on the front is turned. Its a pretty old unit, but works quite well.
Beautiful and nice sound👍 Whats the power of the motor?
0:22 have to say that's pretty cool..
1.21 gigowatts???
I could smell the ozone while watching this......
Poor motor, lol. Was it going to be rewound anyways? It looks well used (very dusty!).
AC HiPot is an inherently destructive test (except when used on a new rewind in which case it is "proof testing"). They were basically figuring out at what conditions (and at what location) the stator would fail as a way to determine the general health of their remaining motors.
Very cool to see. Thanks
shockingly electrifying...
THE ultimate bug zapper!🤗
I feel like my headphones are gonna
Explode
Would have been awesome to see in the dark
You mean testing the motor's field to failure instead? No armature inside spinning that I can see.
The term armature actually refers to the part of the machine in which power conversion takes place. The term "stator" has erroneously caught on as interchangeable. Yes, this is a stator, but it is also the armature.
Isn’t that hard on the core laminations?
And thus, a portal to the upside-down was opened.
The French fry thingy just pooped the bed.
FYI "hipot" means high potential but they don't care enough to write that.
Hipot is the industry name for the test.
Google!
Tadesan thnk u. Good to learn something new everyday. Thks a lot.
Saves ink and time when you have to write it 100 times in a report, same reason as lots of other contractions. Maybe you would say 'AC' instead of 'alternating current'?
Can smell that from here!
me: How many volts?
original poster: yes
Couldn't have dipped it in winding varnish to restore insulation? Why continue once arcing begins?
Not a chance. Varnish is only applicable on much lower voltage units which this is not.
@@bidenhatesamerica I expect if voltage is high enough, any insulation will break down. Just keep cranking up the voltage till it happens.
@@thisisyourcaptainspeaking2259 technically yes but it is highly unrealistic. A failed or failing unit or will “over amp” and cause an electrical short due to heat not voltage. This is due to a unit being fed a voltage LESS than is required or a unit under a much higher work load than designed.
I have multiple electrical certifications and work with voltages up to 480/ 3 phase on commercial rooftop hvac and refrigeration units and other commercial applications.
@@bidenhatesamerica I would say this test for exceeded 480vac, perhaps you were testing to some voltage beyond anticipated induction voltage where: V=(l*di/dt)+960?
@@thisisyourcaptainspeaking2259 I’m not a tester, I diagnose units and replace as needed. My electrical knowledge exceeds what I actually work on. If I had to guess the voltage at point of failure I would probably say 1200-1400 v.a.c.
Motor goes brrrrrr..
What a dangerous job. No room for ANY errors.
Darryl Teichroeb I don't think it's very dangerous just because it's very easy and anyone with common sense can do it safely.
После такого он же точно работать не будет?
Scary
That’s not a motor, normally there’s a thing that spins when you apply the power ???
Dude WTF? I can still the ozone smell in my room!. Im far, far away from there... Insane is it?
No way is that a simple hi-pot test, to get discharges like that you have power frequency and no protection!
Can you touch it though? I really want to touch it I want to feel the connection.
Lol, you would be connected to afterlife.
you going to feel a connection with god if you touch that thing😂
Sure, if you really want to you can touch it... One time and one time only.
Do it again with the lights off
Doesn't look like a motor to me?
that is a formed coil stator. yes it is an electric motor.
Robert Nitschke This is part of an industrial motor. The insulation coating of the wires is being tested to destruction for shits and giggles before rewinding. When an electrician tests a motor in place, he uses a "merger" to put a high voltage on these windings without any amperage. That tells him the condition of the insulation. Part of preventative maintenance because a scheduled shutdown to replace a motor is way less expensive than a surprise breakdown.
_oh my god_is love of transformer of intensity_tension heigh _the love not destroyng and this is egzample for nobody_ _arcahicxn lord
Your use of _underscores does not make sense
yall stole my name
Oops.
Why would you AC Hipot Test an Electric Motor, for fun??????
Yea. We were rewinding it anyway because of age and some other issues. It had not failed electrically and we wanted to test our AC Hipot machine.
Мотор погиб.
Now go tell the new guy to catch all the smoke so you can put it back in.
I thought once you let the magic smoke out, you had to go buy a new bottle...
Or summon a demon to fix it for you. X3
At first motor must be cleane from dust.
2nd washing by alchohool.
3rd drying.
4th testing.
Its not good when you make test like this video this natural
Results, sparks, failing test.
Becuase the dust make failing
To all coil.
_rotE=_dB/dt and rotH=J+dd/dt and HrotE--ErotH=div(H*E) power ellectric motor and difuzor_speak sound __power ellectric motor growth at growth tension_voltage and growth curentc_intensity_amperaj __ here what is growth??_ __archaicxn lord
it failed because they pulled the rotor out.
It failed because they were testing to failure
Not true.
if you take the rotor out and power it to full power, the lack of magnetic load can boost the inductive power factor too high and cause a high voltage to build up inside the windings and destroy the insulation.
The Doctor
Hipot only connects to one end of the motor windings. There is no completed circuit and no current flow.
They are testing the integrity off the insulation varnish on the conductors themselves
i saw that they had all three phases connected but wasn't sure on it
No rotor innside. Than this always will happen