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Jong... you have not mentioned whether or not a cooling/clearing medium is used? Regards, Phil Corso

Seifj... The IEEE Std 100 definition is, "Analog data, implies continuity as opposed to digital data, that is concerned with digital states!" In a 1960 Hewlett Packard Co computer course Analog was defined as "A characteristic that is continuous in form as opposed to digital, which is...

Tally... the figures you provided result in a NEMA, and IEC Voltage Unbalance Factor (VUF) of 0.34% and 0.36%, respectively. Thus, supply voltage unbalance can be ruled out. 1) Do you have comparable figures for the line-volts, and line-amps at the drive's output or the motor's input? 2)...

Aliya... this time I am in full agreement with CSA! Increased Amps yields increased magnetic force. Regards, Phil Corso

Remy 21-May-11 (17:47) post about a similar experience. The tube failures were traced to a heat-treating step in the last stage of fabrication. The tubes were placed on refractory bricks in an annealing furnace to keep them a few inches above the furnace floor. Unfortunately, a metallurgical...

Tally... Can you provide the actual L1-L2, L2-L3 and L3-L1 measurements? Regards, Phil Corso

Vassy... there is no "one size fits all" answer to your question. The terminal-voltage and armature-current response (remember the ONLY TWO electrical variables a generator can deliver) depends on the nature of the load, i.e, its equivalent circuit representation. It could be resistive...

Mohamed Rifaat... I am not clear about what you ask. Do you want to determine if a given size cable is capable of withstanding the mechanical and thermal effects, while carrying a specific short-circuit current? Regards, Phil Corso

Tricky... with your name youz cud define Stable anyway youz want. It's certainly not recognized as a power system performance attribute. Perhaps CSA can advise you as to its suitability in the GT world! Regards, Phil Corso

Hamid... If you have a background in Calculus, I can provide you with the procedure. The shape, if you don't already know is called a Circular Paraboloid. But, to solve it you have to provide some dimensional detail in order to "find" the constants of the parabola equation which takes the...

Rangacharya... you might think it odd that an electrical engineer respond to this thread, but I want to share a similar experience with you. During startup of an LNG conversion plant we experienced several reformer-furnace tube failures. Initially the failures appeared to occur randomly! For...

Rangacharya... is the 'one' tube always the same one, or a random one in the same manufactured lot? Phil Corso

Erache11... please provide some details such as manufacturer, V & A rating, operating mechanism (magnetic, spring & motor, pneumatic, hydraulic, solenoid), ambient temperature, age, last time maintenance/testing was carried-out, etc. Regards, Phil Corso

Namatimangan08... technically it is, dissipation = I^2*R! Phil

CSA... I only ask that you read the Control.Com thread, 1026236550, "The Physics of... Electrical Power!" Phil

Miguel... CTs having unusual ratios are often used in The "Art" of Protective Relaying. For example, burden or ratio mismatch between Primary and Secondary CTs in Xfmr Differential Applications can occur. And because unusual ratios are supplied, I'm sure 1:1 (5-A current rated) can be...

BT965... The alternator's nameplate will indicate rated-amperes, rated-kVA, and rated-PF. And, its rated-kW (or MW) will equal kVA x PF. When connected to the load-bank, PF is 1.0 (often referred to as unity) thus the current-reading will be 0.8 x rated-amperes. Stated another way, when...

CSA... thanks for the kind referral. However, I don't think I can help Dabear very much. Had you read my Armature-Reaction paper you would have known I'm not an affectionado of the torque-to-amp (and vice-versa) conversion theory. Thanks again for remembering me! Regards, Phil

Sensorless... I suggest you search the Control.Com Archives. Regards, Phil Corso

Malik... search web for: Electrical Calculators; Electrical Engineering Calculators; Cable Sizing; and Wire Sizing! Regards, Phil Corso