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#1
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dc motor problem ??
hi i have i problem, how does not )
well i have to DC motor they run on 36v and they have a 40amp trip breaker , ho yes i forgot its a big scrubber. well the problem is this if a let run but motor for i while the breaker will trip and if a disconect one motor the breaker will not trip. i check both motor i think i swap back and forth and both motor works as long one only run. is any way to see if the breaker is bad or one of the 2 motor. |
#2
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dc motor problem ??
macarty wrote:
hi i have i problem, how does not ) well i have to DC motor they run on 36v and they have a 40amp trip breaker , ho yes i forgot its a big scrubber. well the problem is this if a let run but motor for i while the breaker will trip and if a disconect one motor the breaker will not trip. i check both motor i think i swap back and forth and both motor works as long one only run. is any way to see if the breaker is bad or one of the 2 motor. Check the Voltage drop across the breaker !!, How hot does the breaker get ? Are the connections to the breaker tight ? Yukio YANO |
#3
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dc motor problem ??
On Sun, 23 Sep 2007 20:31:44 -0500, macarty
wrote: hi i have i problem, how does not ) well i have to DC motor they run on 36v and they have a 40amp trip breaker , ho yes i forgot its a big scrubber. well the problem is this if a let run but motor for i while the breaker will trip and if a disconect one motor the breaker will not trip. i check both motor i think i swap back and forth and both motor works as long one only run. is any way to see if the breaker is bad or one of the 2 motor. You have two motors on one breaker? Either motor will run without tripping the breaker? One motor may be bad and working because removing the load of the second motor lets the breaker squeak by current wise - can't rule out the breaker. Why not switch breakers or (better) measure the current of each motor? A single measurement can often replace a lot of arm waving and head scratching . . . -- ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#4
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dc motor problem ??
On Sun, 23 Sep 2007 20:31:44 -0500, macarty
wrote: hi i have i problem, how does not ) well i have to DC motor they run on 36v and they have a 40amp trip breaker , ho yes i forgot its a big scrubber. well the problem is this if a let run but motor for i while the breaker will trip and if a disconect one motor the breaker will not trip. i check both motor i think i swap back and forth and both motor works as long one only run. is any way to see if the breaker is bad or one of the 2 motor. Measure the circuit current and find out just how much current is passing through the breaker. Your question without this detail, and information on the breaker protection settings do not allow a proper assessment of the problem. Also how long does the breaker remain closed when both motors are running ? (It may be that the starting current is too high for the settings). Peter Dettmann |
#5
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dc motor problem ??
On Tue, 25 Sep 2007 10:04:03 +1000, Peter Dettmann
wrote: On Sun, 23 Sep 2007 20:31:44 -0500, macarty wrote: hi i have i problem, how does not ) well i have to DC motor they run on 36v and they have a 40amp trip breaker , ho yes i forgot its a big scrubber. well the problem is this if a let run but motor for i while the breaker will trip and if a disconect one motor the breaker will not trip. i check both motor i think i swap back and forth and both motor works as long one only run. is any way to see if the breaker is bad or one of the 2 motor. Measure the circuit current and find out just how much current is passing through the breaker. Your question without this detail, and information on the breaker protection settings do not allow a proper assessment of the problem. Also how long does the breaker remain closed when both motors are running ? (It may be that the starting current is too high for the settings). Peter Dettmann thx i will replace the breaker is a 40amp i check the RPM of each motor and the new is 300rpm the old is 247rpm same voltage to both motor, i didn't check yet the breaker but one of the plug (+) for the motor gets really hot ??? , i think bad connection. |
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