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CH Lee
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Recent content by CH Lee
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C
fisher pcv installed in petrol road loading line
Is this PCV used in TTLR ( Tank Truck Loading Rack) for each meter run? Over here most of the oil terminals deploy FMC (formerly known as Smith Meters) electronic preset with 210 Digital FCV for truck loading application, it's 210 valve is a self contained, product actuated diaphragm valve...
CH Lee
Post #13
Oct 6, 2021
Forum:
Instrumentation & Measurement
C
Automatic Synchronizing and Load Sharing
Yes, we have one and ever made adjustment as mentioned in earlier post.
CH Lee
Post #50
Sep 23, 2021
Forum:
Power Generation
C
Automatic Synchronizing and Load Sharing
I have mentioned in earlier post, I have made adjustment on externally accessible pot, P1- speed, no improvement.
CH Lee
Post #49
Sep 23, 2021
Forum:
Power Generation
C
Automatic Synchronizing and Load Sharing
Dear Jame, Is the attached manual refers to Cos ∮- KVAR optional card, the title of document is blocked, if so, sorry to tell you that there isn't such optional card fitted to our system. As for adjustment to Digital pot U/P.F. Optional Card externally, I have shared in previous post.
CH Lee
Post #45
Sep 22, 2021
Forum:
Power Generation
C
pump flow control
My apology, I misintepreted your requirements, I am not well versed with control algorithms.
CH Lee
Post #5
Sep 9, 2021
Forum:
Process Control
C
pump flow control
Pleass
CH Lee
Post #3
Sep 8, 2021
Forum:
Process Control
C
pump flow control
First of all, you need to tell what type of Pump you are working on to control the flow, e.g. centrifugal, diaphragm or reciprocating Pump, you need to maintain system pressure or can live with lower pressure while flow rate is reduced. A detailed descriptions of pumping system will narrow down...
CH Lee
Post #2
Sep 8, 2021
Forum:
Process Control
C
Automatic Synchronizing and Load Sharing
Last month load test encountered same problem, at the end of 2 hour load test, I thought of doing auto loading in controlled manner, however, my colleague was too slow to respond allowing total load swung from 1 unit to the other, leading to reversed power tripping. Our client was around, so...
CH Lee
Post #42
Sep 7, 2021
Forum:
Power Generation
C
Automatic Synchronizing and Load Sharing
Shunt. Alternator has a PMG.
CH Lee
Post #40
Aug 20, 2021
Forum:
Power Generation
C
Automatic Synchronizing and Load Sharing
Dear James, Noted with thanks, enjoy your vacation. Thanks.
CH Lee
Post #37
Aug 20, 2021
Forum:
Power Generation
C
Automatic Synchronizing and Load Sharing
Dear James, If you follow the drawing closely, you would have realize those open/close Switches are for manual operation. From my understanding, the operator supposed to operate PB when he wants to stop one generator, the system with ramp the load down to a predetermined level, then...
CH Lee
Post #35
Aug 20, 2021
Forum:
Power Generation
C
Automatic Synchronizing and Load Sharing
Operate PB, unloading and open the breaker. By the way, have you ever come across leroy Somer AVR model R630?
CH Lee
Post #33
Aug 19, 2021
Forum:
Power Generation
C
Automatic Synchronizing and Load Sharing
GSB is referring to another equipment, Generator Switchboard (11KV).
CH Lee
Post #31
Aug 17, 2021
Forum:
Power Generation
C
Automatic Synchronizing and Load Sharing
Dear James, There isn't any MLSC installed in this system. Two tests carried out in the couse of troubleshooting. 1. Both units on droop mode, active and reactive load shared perfectly with total connected load fluctuations without operator intervention, frequency varies according to total...
CH Lee
Post #30
Aug 15, 2021
Forum:
Power Generation
C
Grid frequency unstable - potential problems?
Dear CSA, Thanks for pointing out. What an embarrasement to reply the post without realizing not reading through whole series of exchange of communications. From the communications, I can see the sincerity and generosity from both of you to share the knowledge and help people out. God blessed.
CH Lee
Post #51
Aug 15, 2021
Forum:
Power Generation
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