MV Synchronous Motor Starters

[2esingeek]

Good afternoon All,

I am trying to get a budgetary price to my client to replace two (2) MV Synchronous motor starers that will source two (2) 1500HP Motor loads. I haven't had to buy them in 10 years and would not know what the pricepoint is. I threw out bobbers in the water to my Rockwell and Eaton contacts but with the current crisis response time is a little slower than normal. If anyone has input to a rough order of magnitude as to what the owners cost for this is please share.

Thank you Jason

 

[jraef]

Across-the-Line, RVAT, Reactor Start, Soft Starter?
With or Without a Motor Protection Relay?

Across-the-Line, no MPR, 1 high structure, figure $20k worst case scenario.
Add another $10k for an MPR with CTs, PTs, RTD inputs etc., like an SEL 710 of Multilin 869
Oh wait, forget that, I just saw the Synchronous...

Brushless or brush type? Excitation with the starter or is it external?


" We are all here on earth to help others; what on earth the others are here for I don't know." -- W. H. Auden

 

[RRaghunath]

Synchronous motors and 1500HP rating - must be low speed type.
If these are induction started (Induction-start, synchronous run) and source is good enough to allow DOL start, there is no difference between the starter for Squirrel cage induction motor and that for Synchronous motor.

 

[waross]

Has the Polarized Field Frequency Relay gone the way of the dinosaur?

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[jraef]

The starter would not be different, but the appurtenances would be.


" We are all here on earth to help others; what on earth the others are here for I don't know." -- W. H. Auden

 

[2esingeek]

I contacted a very helpful MV Technical Sales Engineer at Motortronics and said that a MV Brush Type Synchronous Motor at 2300V 1500HP at 514RPM with 38R Fuses and 125V Field Excitation voltage at 124A could be around 50,000. I am still trying to get prices from AB and Eaton.

 

[2esingeek]

Sorry SEL 710-5 and its Across the line

 

[LionelHutz]

In the $50-60k range could be about right for what we'd sell an ATL synchronous starter for. The price can depend on the options. You're hitting a current level where some of the component prices quickly jump.