Recent content by Andy1984

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    Circuit breaker for 18.5kW motor

    Hi:) Im sorry for late answer 50A breaker was just tripping during starting, I dont know the trip curve of this breaker, Now with 84A working fine
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    Circuit breaker for 18.5kW motor

    Hello Gentlemans:) Im sorry but i dont have this motor in my home and i can not make a name-plate photo, i confirm it is a 3phase motor(i know i make mistake in my above calculation), During starting this motor dont have easy life, its connected via v-belt with roots pump, so i think the...
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    Circuit breaker for 18.5kW motor

    Hello Phil , Hello Gadha, Good morning and very sorry for late reply, Im not sure if name plate photo will help but i enclosed:) 32A or 35A are definitely to small for this application, nominal current for this vacuum pump is: 18.5kW=400V*I ==> I=18.5kW/400V=46.25Amper but during starting this...
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    Circuit breaker for 18.5kW motor

    Hi Phil, Sorry for late answer, Its a vacuum pump, 400VAC between live wires, IE3 enginer, nothing special condition, i apply 84Amps breaker and working fine, but im wonder if is any tableor formula for select right circuit breaker? Regards, Andy
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    Circuit breaker for 18.5kW motor

    Hello, What size of circuit breaker can you suggest for 18.5kW motor(3 phase connection)? Do you think that 40Amps will be enought?
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    3-phase electric heater control by SSR insted of contactor.

    Thanks Joseph, You got absolutely right, 3-pole SSR is more simplest solution, But i wonder how to use combination of SSR and contactor?
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    3-phase electric heater control by SSR insted of contactor.

    Hello Everyone, Does anybody tried to connect heater pipe(400VAC, 3 phases) to the SSR instead of contactor? I know that this kind of solution is now more and more popular, But i dont have any idea how to do it? As far i know usually it is realize by using combination of two SSR and one...
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    Combination of two blowers

    Nice article, Thank you James!
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    Combination of two blowers

    Hi James, Im sorry but i dont see this link...:( could you attach it please?, Regards, Andy
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    Combination of two blowers

    Hi James, Thanks for your reply, There is no any VFD , Big blower using simple "soft-start" triangle-star and small blower have only one contactor, The drawing is complete but i agree it could be obscure... I just wondering what could be happen if i connect big-blower(as first) with the much...
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    Combination of two blowers

    Dear All, Good day! I have got small industry dryer (hopper capacity 80liters) with the small blower(0.12kW, 0.4A), Im considering to connect this dryer with dehumidifier using flexible hose: hose provided from dehumidifier blower to the dryer blower, Just to provide dry air to the dryer hopper...
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    "Inovance" servo motors

    Hello everybody, Have either of you have any experience with "Inovance" brand servo motors? If yes: What are your opinions about this product?
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    3 phase heating element connected only to two phase.

    Thank you Phil for your fully explanation and for patience :) Now is totally clear, (Gi.Fi.E.S method its very interesting and i think could be usefull not only for such "hypothetical considerations " but in daily trouble too) Wish i have at least a small piece of your knowledge in the future...
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    3 phase heating element connected only to two phase.

    Hello Phil, Yes you have absolutely right im not electric engineer, Im just a guy who looking a knowledge, I couldn't find the answer for my question(or doubts) in other forums so i just tried to ask people who have more knowledge and practice, thats story, You wrote: "Furthermore, it would...
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    3 phase heating element connected only to two phase.

    Hi Phil, Good day! Sorry for not reply sooner, Answering to your question: "Is the source 3-phase, 3-wire, 400-V, or 3-phase, 4-wire 400/231 ? " Its 3 -phase, 4-wire(3 live + PE), Voltage between 2 phases is 400VAC, Im asking about this heating element because im just curious: In case of...
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