I am prepping to do the preliminary work on a Solar Panel install.
The install is straight forward. 16 Panel array with micro-inverters on each panel.
The micro-inverters are intelligent and use weather rated, summing cables to string all the units to a final junction box on the roof.
I will...
@itsmoked:
I agree with what you are saying about the possibility of a tech manually pushing the contactors in and causing a dangerous short.....I will admit that I have participated in such stupid acts :)
But here is why i brought this up to begin with.
ABB sells two snap-on interlock units...
I have looked at a few videos that use ABB IEC-frame contactors to assemble a reversing contactor set and the preferred method of interlocking is using a hybrid, modular, electromechanical interlock like the VE5-1.
A perfect example of such a video can be seen on you tube if one does a search...
Thank you all for your very informative replies.
I think I can proceed safely with my automation project now that I have some solid images I can reference.
I tried to explain this to my industrial rep at Galco and he was baffled by it.
I then pointed them to an image of the Dahlander motor...
@ electrolitic "The shorting contactor shall be closed always in advance"
Should I still insert a short timer between when Lo Speed contactor releases and Hi Speed shorting contactors pull in?
Even though there are interlocks preventing both from occurring at the same time I was just wondering...
Thank you all for your replies.
I have attached a photo. Please help me validate if what I am reading on the prints is correct. Is that a shunting contactor? What function is it performing?
I see there is a consensus on inserting a short delay to allow circuits to stabilize.
From what I...
Working on replacing a starter on an abandoned warehouse. The starter is basically destroyed and missing major parts.
The motor is a 5 hp, two winding, 3 phase motor, running at 480. The starter will be reversible. The motor is being rewound.
I have not worked on a separate winding motor before...
