Dashpot Operation
Dashpot Operation
(OP)
Hello,
Does anyone have any links that describe/illustrate the operation of a dashpot? My limited knowledge is that it is a "bucket" having a paddle submerged in oil (or other medium). As current passes through the device, the oil heats up and begins to flow through an oriface in the paddle. If enough heat is generated by the current (over current situation), oil flow will cause the paddle to move and the unit will trip.
Am I missing anything?
Thanks for the help in advance.
Erich
Does anyone have any links that describe/illustrate the operation of a dashpot? My limited knowledge is that it is a "bucket" having a paddle submerged in oil (or other medium). As current passes through the device, the oil heats up and begins to flow through an oriface in the paddle. If enough heat is generated by the current (over current situation), oil flow will cause the paddle to move and the unit will trip.
Am I missing anything?
Thanks for the help in advance.
Erich






RE: Dashpot Operation
he dashpot is an oil filled cylinder with a small hole in the piston.
when the relay is reset, coil deenegrized, contacts open, the piston will be at one end. when the coil is energized, it first starts to force the piston to the other end. It takes time for the oil to be forced through the small hole from one side to the other. It may take a minute for the piston to travel enough to let the contacts make. thus a one minute time delay to make contacts after the coil was energived
RE: Dashpot Operation
You might check with GE - last I knew they were still selling the EC-2 trip units for use on dc breaker applications.
These things are nice for a historical collection, but I wouldn't want any in service on my system.
RE: Dashpot Operation
RE: Dashpot Operation
EEtheEE we can upgrade those for you with any type of trip unit you desire, however, we recommend AC PRO units.
www.epowerplus.com
RE: Dashpot Operation
RE: Dashpot Operation