Space Heater requirement for a 2.2kW, 415V Motor

[krisys]

We are commissioning a 3000 kW, 11kV Motor to drive the Crude Oil Pump. The lube oil system of this unit has two nos. of 2.2kW motors. Surprisingly, the vendor has provided the space heater for these motors. I think providing space heaters for such a small motors is very unusual.

During the engineering, the space heater supply was missed out. However, the users are insisting to connect supply to the space heater!!! Their rationale to insist for heater connection is that the vendor has provided the space heater and terminals!!!

My experience is to provided the space heaters for the motors rated 37 kW and above.

Any experience to share or any views?

 

[edison123]

Agree. It's unusual for a such low rated motor. Unless the motor is going to be idle for a long, long time, I don't see the need for it.

Muthu

http://www.edison.co.in

 

[davidbeach]

What does the customer want? What does the vendor say about the warranty if the heaters aren't connected?

 

[ScottyUK]

Are these L/O pumps continuously running, or are they for start-up until a main shaft-driven pump establishes itself? If the latter then space heaters are likely a good idea. If this motor is one of a group and may stand idle for prolonged periods while it is a standby machine then again it probably makes sense to provide heaters for its oil pump motors, especially if the oil system shuts down with the motor. Given the choice I'd keep the L/O system running while the main motor is shut down to avoid cold bearings, condensation, corrosion, hot-spots in the oil tank, etc.