Hello everyone ,
I recently saw at manual for Westinghouse High voltage motor that as starting method was given soft starter only . In your opinion, what should be structural difference compared to the motor with a DOL start .
Daer experts ,
I am involve on a project to replace a 28 DC motors 15 kW with AC motors and I am interested for yours experiences related to the maximum starting torque of an AC motor in open and closed loop configuration .
As it is about drives that in winter conditions sometimes have big...
Hello everyone.
I'm involved in an crane incident investigation and contactor failure as a possible cause.
Previous practice for the right time to replace it is based mostly on a visual inspection of electrician and terms when the contactor had the expected number of operations .
we are...
Hello , everyone !
In one old DC motor instruction suggestion for bearing replacing is bearing type 6210 / SV6.
I tried to find what the suffix SV6 means without success. Does anyone have any knowledge about what this suffix mean .
Thank in advance
Hello everyone,
We have several 2 MV, 6KV synchronous motor which serves to drive the fan and we have occasionally technological delays which can last several days.
I have somewhat crazy ideaa that it then can be used like source of reactive power and then it should cover the consumption of...
Hello everyone,
I am electrical guy and I have worked in small el.motor repair shop .Changing the bearings is a common daily work .Most of roller bearings of our motors is NU type so that they are easier to find in our warehouses . When we need urgent reparation a motor with bearing N-type...
Hello everyone,
I have working on reparation of all main poles 260kW DC motor *frame size QMS 500/800* and I have a great unknown about the direction of rotation of this electric motors . We finally got a part of the original certificates of the motor, but for rotation at non drive end instead...
Hello , everyone !
I have a request to change the bearings and treatment of collector on 30 year old Hubler tacho-generator with permanent magnet.I do not have dismantling instruction . I'm afraid unable to stop interruption of magnetic circuit and my colleagues say 25 percent lower output...
We recently had a several problem with entry of animals ( mainly cats ) through the cable channels to the 6kV installation . They made a short-circuit, damage and a lot of work for maintenance personnel. Does anyone know of an effective and safe way of preventing their entry through cable...
One my friend bought old diesel generator tip AD 30 manufacturer zavod ELEKTRIK - Radomir from Bulgaria. It looks good considering that type and year of production 1982 is only distinguishable on covers and we suppose that it have all electric equipment but some joker taked off all leads from...
