(1) During the turnaround then the units are completely steamed out and shutoff in a refinery setting, would we still need to observe area classification for bringing temporary (non classified) electrical equipment in the area?
(2) What about a situation where the units are shutoff and steamed...
Attached, please find the factory test data sheet for further discussion.
Ambient temperature are not high (on average Min. -10 and Max +20 degree C).
Regarding your question of how do we determine about % loading of compressor; operations indicated that they have pressure / flow guages that...
After re-winding, with regard to airgap, we were told by the re-winding company:
* The air gap flux density is nearly 70 kl/in2 and our usual limit is about 65 kl/in2.
* Attached, please find Stator Winding.
* Load adjustment to control FLA is not an option since as per operations this...
Both the manufacturer as well as the company who re-wound the motor suspect that large air gap is causing high magnetizing current (i.e. NLA) and because of this the motor is running at higher FLA. Since re-wounding didnt result into any significant change in FLA thus it is hard to grasp that...
There seems no difference in performance before and after the rewinding.
Voltage seems ok. I did not check current imbalance but I will do it soon. Previous history though does not indicate any sign of imblanace
I do not have winding diagram but certainly I can check for it.
We have checked...
Hi,
We have 450HP, 400RPM, 4160V, 16 pole SCIM. This motor is directly coupled with a make-up gas compressor. Its nameplate says FLA as 81.5A. However, this motor never run at this FLA rather it always run at 88A. Manufactur was recently contacted and he said that the measured FLA was 88.9A @...
Thanks. Do you any idea what would be phase to phase clearance as per CSA?
Moreover, at what clearance level (P-P) or (P-E), we would need an additional filler (like Novoid X)?
We have a 13.8kV/4160V, 20MVA transformer. Incomer is connected to transformer through a pothead (a HV side cable junction box). Incoming cable is 400mm2 (PILC). Inside the box, the cable is insulated with Raychem 15KV rated heat shrink sleeves. My question is that after having heat shrink...
