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Suryanarayana,... Is it a Water-Cooled or Air Cooled-air Load-Bank? Regards, Phil Corso

Hameedullah... My advice is to do the jobs electricians are required to for a few months! Have a good life, Phil Corso

Harris Marine... Here's another "Induction Motor Tip" ! Regardless of kW or HP size, any uncoupled induct'n motor, at rated name-plate voltage, should accelerate to full-speed in less than 5 seconds ! Phil Corso

Harris Machine... Regarding my Q7... there are 2 ways: 1. Hold a large screwdriver or piece of wood, between the motors carcass close to the Centrifugal-Switch, and your ear. It takes a some of practice. bur in most cases the switch opening can be heard. 2. Place a clamp-on ammeter around either...

Laid86... I'm no longer associated with the Oil/Gas Industry but instead very involved with LNG ENERGY ! Here's why, The combustion of natural gas does not emit soot, dust or fumes. It generates 30% less carbon dioxide (CO2) than fuel oil and 45% less than coal, with a two fold reduction in...

Harris Marine... I'm sure the Centrifugal-Switch's "time to open" doesn't vary much. Obviously the acceleration-time does change due to different loading, but it's in the order of 1 or 2 seconds ! 6) What's the rated Horsepower and Speed ? 7) Do you know how to determine when the Switch opens on...

Laid86... From Google: "Cargo Calculations – Tanker Work" 1) NSV, Net Standard Volume, is the volume of oil excluding total water and total sediment, calculated at standard conditions eg 15 deg C or 60 deg F and 1013.25 hPa. 2) TCV, Total Calculated Volume, is the gross standard volume plus...

Harris Marine... 1) There is no doubt that the Start-Capacitor has been damaged and must be replaced ! 2) Since the Start-Capacitor has been "smoked", the Centrifugal-Switch has failed "closed" ! 3) The good news is that the Centrifugal-Switch wire is available externally ! 4) Install a...

Laid86... It would be helpful If you could provide the Industry or product you are interested in ! Phil Corso

Wihud... Welcome to the forum! You asked an interesting question. I happen to have the 3rd edition of the Struthers-Dunn Handbook, "Relay Engineering" ! It "states" that a variation of plus/minus 7.5% variation in wire resistance is considered acceptable. Remember, heat loss is related to the...

Joseph_2... We now know it's single-phase and it's driving a Vacuum pump! Phil Corso

Gentlemen... A small,, but important technicality... Energy cannot be consumed nor produced. Phil;)

Gadha707... I found that an IEC rated 3-ph, 18.5 kW, 400 V, with an SF equal to S1, has a nameplate current equal to 35 Amperes. The CB selected by Andy is 84 Amperes ! The breaker size he selected does not comply with USA NEC requirements ! But your suggestion is valid ! Regards, Phil Corso

Andy1984... Both the USA standard, NEMA MG-1-1.40.2 and EU Standard, IEC 60034-1, stipulate "Duty"" be noted on induction-motor nameplates. I am quite sure you will see it on your motor's nameplate ! Furthermore, an 84-Ampere Circuit Breaker is more than double the motor's rated Full-Load...

Rahig8... Ask ABB ! They should know better than anyone else. Phil Corso

Gentlemen... While the Voltage-Drop equation is correct you have confused unit dimensions: Vd = 2 x A x Rw x L, where: o Vd is Voltage across Load, in Volts o A is Loop-current, in Amperes. o Rw is Wire-Resistance, in Ohms/km. o L is Length of cable, in km. Regards, Phil Corso

Mehboob.. Are these meters connected to multi-ratio CT's? Phil Corso

Mehboob... Can you identify what each of the 6 meters are measuring? Phil Corso

Mehboob... Meter Photos are unreadable ! Phil Corso

Mehboob.... What is it's temperature ? Regards, Phil Corso