the motors are 22kW and in a hard to access mechanical cellar, 6m deep.
since the plant has to be isolated to go into the cellar, that procedure is already in place to prevent it being plugged in in delta
The reason I want to do this is that when one fails, the mechanical fitters go down, uncouple the pipes, unbolt it and crane it out, and they usually disconnect the armoured cable from it (with the usual bits of tape labelling the cores)
I think that alone is enough of a reason to improve the setup.
a site standard (assuming the plug isn't labelled usefully has to be the way forward. Could even label the socket accordingly
we have reduced our 400v extension cables now and those that remain have RCDs on them, except welders, which are still 3ph 32a but only used for maintenance. We did have 300hz 200v 3ph supplies a while back, they were always exciting.
the motors are 22kW and in a hard to access mechanical cellar, 6m deep.
since the plant has to be isolated to go into the cellar, that procedure is already in place to prevent it being plugged in in delta
The reason I want to do this is that when one fails, the mechanical fitters go down, uncouple the pipes, unbolt it and crane it out, and they usually disconnect the armoured cable from it (with the usual bits of tape labelling the cores)
I think that alone is enough of a reason to improve the setup.
a site standard (assuming the plug isn't labelled usefully has to be the way forward. Could even label the socket accordingly
we have reduced our 400v extension cables now and those that remain have RCDs on them, except welders, which are still 3ph 32a but only used for maintenance. We did have 300hz 200v 3ph supplies a while back, they were always exciting.
