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| can i get killed by high voltage test set up |
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| khatus:
Hello guys This is High voltage(AC. freq= 50hz) test set up for testing ground insulation of Main pole and interpole coil of traction motors (dc series motor).The leakage current is set to 300mA (max).That is if any ground insulation fault is detected, this device allows max 200mA to pass before it's trips(probably Current sensing relay is used ).my question is Can i get killed by high voltage(as high as up to 8kV)?? because if current is 200mA and voltage is 8KV, The power transferred to my body is (0.2 * 8000 = 1600 watt) |
| Buriedcode:
Your calculation is wrong as it won't transfer all "power" to you, as your body has resistance so will limit the current. Short answer is: yes that could kill you, much more readily than mains. Whilst many oft-quote the rather crude saying "its the volts that jolt and the amps that kill" it is the current that does the work, but the voltage that allows it to flow through a resistance. SO.. even if your skin has very high resistance, given high enough voltage, enough current can flow to stop your heart. V= IR. I = V/R. If R is fixed, if V goes up, so does I. What that lethal current/voltage is, varies greatly on the person and situation. Skin generally has a high resistances, but this drops considerably when hands are wet, sweaty (which contains a lot of salt) or clammy. The actual resistance from hand to hand, through the body, not including skin can be quite low indeed. 8kV @ 150mA could kill you several times over, but I have no doubt it one was to run horrible experiments, some would survive, some would die. Also note if it is particularly humid 10kV can jump a fair way, at least 10mm (I believe its more like 5mm in dry air). So yeah, take precautions. |
| khatus:
I have found this chart from a youtube channel named RimstarOrg https://youtu.be/9iKD7vuq-rY |
| BravoV:
--- Quote from: khatus on December 30, 2018, 04:01:54 pm ---Can i get killed by high voltage(as high as up to 8kV)?? because if current is 200mA and voltage is 8KV, --- End quote --- Yes. You don't need more complex words answer than my above word. |
| joeqsmith:
The Electrical Safety DOE handbook is available free on-line. This may be a good read. |
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