Starting a large centrifugal pump
Starting a large centrifugal pump
(OP)
Gentlemen,
I am involved with the design of a water pumping station equipped with 3 centrifugal pumps fitted with 450kW (415V) each capable of delivering 112 l/s and the static head is 277 metres.
The contractor has proposed star delta starters but I understand that on delta transition the inrush can be worse than DOL starter.
I am concerned that there will be excessive torque during start up with consequential electrical and/or mechanical damage to the pump set.
Your comments would be appreciated,
FPP
I am involved with the design of a water pumping station equipped with 3 centrifugal pumps fitted with 450kW (415V) each capable of delivering 112 l/s and the static head is 277 metres.
The contractor has proposed star delta starters but I understand that on delta transition the inrush can be worse than DOL starter.
I am concerned that there will be excessive torque during start up with consequential electrical and/or mechanical damage to the pump set.
Your comments would be appreciated,
FPP





RE: Starting a large centrifugal pump
You will get a lot of useful response from forum237: Electric motors & motor controls engineering. If you re-post please leave a note here with a link to the new thread.
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RE: Starting a large centrifugal pump
RE: Starting a large centrifugal pump
Where you might need a lot of torque quickly is when it comes to opening a check valve between the pump and that 277m of head downstream. In that case, you won't need much at all until you manage to open the check.
"If everything seems under control, you're just not moving fast enough."
- Mario Andretti- When asked about transient hydraulics
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RE: Starting a large centrifugal pump