Search results

mickyeng... Which Manufacturer or Vendor provided the 110V DC supplies? Regards, Phil Corso

Shagon Tandon... Q21) PC: Why were the original Generators rewound? And, my E-mail address is [email protected]! Regards, Phil

Shagon Tandon... I.M.H.O, the quickest and simplest test is to measure amps in each generator's star.point-to-hull cable. The presence of current, especially if in both, is indicative of the phenomenon called "Negative-Sequence"! It results in increased generator and engine temperatures! Q20)...

Shagun Tandon... Here are the current (Please excuse the pun) stats! I'm available at Cepsicon.com ! GENSET OPERATING VALUES Gen # V A kVA kW kVAr PF Gen 1 380 583 383.7 258.0 284.0 0.67 Gen 2 380 520 342.3 275.0 203.7 0.80 Totals 380 1,103 726.0...

Shagun Tandon... I decided to arrange my response by Question Number: 0) ST: Yes your pre-assumption is correct. Engine expert says nothing wrong with engines. 1) PC: Were generator load-tests ever carried out using a sea-water tank? ST: Yes sir. it was done using sea water tank, and also...

Alliam... I should have asked first, "What kind of Plant is it in?" If the motor's in a location where flammable or explosive materials are handled, and the motor is not rated "Explosion-Proof" then, it must be fitted with a system that "places" the motor in a less dangerous location. That...

AAliam... The key "condition" any motor must meet, whether new or rewound, is: "Carcass Temperature must not exceed 40degC-rise above ambient" (65C in certain environments) ! Following are (I hope) answers to Mohamed's questions: 1) Presumable, a TEFC (Totally-Enclosed-Fan-Cooled motor. 2)...

Shagun Tandon... One more question... 17) If the engines and AVR's are the same did the problem begin when either or both generator field-excitation sources were worked-on or changed? Phil

Gentlepeople... Thus far, a great deal of theory has been presented, but I have not seen advice given that can fix it! It is my contention that the problem does not exist because of differences within the machines, but, instead systematic problems outside of them! The data to prove or disprove...

Shagun Tandon... To get a head start: 16) What is Gen'r capacity? Regards, Phil Corso

Shagun Tandon: My "presumption" in the preceding reply (#24) is that a combustion-engine expert concluded nothing was wrong with the engines! Regards, Phil

Shagun Tandon... This problem has been on this forum for longer than a year. In my experience I find PF is unusually low ! So, let's start from the beginning: 1) Were generator load-tests ever carried out using a sea-water tank? 2) Have the generators ever worked well together? 3) Did the...

Shagon... Although you addressed James, please advise forum participants if your listed V, kW, A, and PF numbers were provided by instruments or hand calculation? Also, what are excitation Amperes and Volts? Finally, please provide kVAr meter readings and Gen'r Nameplate photo's, if at all...

Shagun Tandon... The original description of the generators was "Both generators are identical and both using EMRI CAT v2.3 AVRs". And yes, there will be slight changes in both stator-winding and rotor-winding parameters because of temperature differences ! Even if the stator is rewired! But...

Addressing Gregorb6 specific question to me: Electronic components have be known to change in value over time ! Especially if in a marine environment, or maintenance was not carried out over regular periods of time, or because different personnel are used. By the way... did you carry out the...

Mutahir... Have you decided to proceed or discontinue the project? Regards, Phil Corso

ghulamshoaib... So then, there is no question about it being a True Rms ammeter? 1) Have you measured all 3 phases? 2) What is Input to Output ampere Ratio ? 3) Do phase currents differ? 4) Can you measure Input to Output power with a clamp-on power meter? 5) What is Amperes in percent of rated...

Mutahir... Sent today, approx 11:45am (UTC-4, "Papa" Time Zone) Regards, Phil Corso

ghulamshoaib... What type of ammeter are you using to determine amperes ? Regards, Phil Corso

Mutair... Did you receive my E-mail ? Regards, Phil Corso