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Usefull information of generators. Diesel generators, Gas generators, Petrol generators Electrical data. Generator electrical table, Three-phase connection systems, Generator Energy Table, generator power table, area table, volume table, capacity table, nema code letters of electrical motors for generator, kw, kva, horsepower required when kw known, kw input when hp known, amperes when hp known, amperes when kw known, amperes when kva known, generator frequency hz, generator reactive kva, kvar, voltage regulation, normal three-phase three-wire, delta three-phase three-wire, normal three-phase four wire, delta three-phase four wire, voltage in volts, current in amperes, power in kilowatts, kw actual power, power in kilovolt amperes, kva apparent power, horsepower, revolutions per minute, reactive kilovolt amperes, efficiency as a decimal factore, no load, full load, power factor, dc kw is equal to dc kva, power data, unit, btu per minute, horse power per minute, joules per minute, metric hp, watts per minute, pressure conversion data, mm per hg, kg per centimeter square, volume and capacity data, cubic inch, cubic foot, us gallons, nema code letters for motor starting in kva per hp, code letter a, b, c, d, e, f, g, h, generator energy table unit, btu to calories conversion, joule to btu conversion, generator designing with engine and alternator, catagories of generators, local, new and used generator brands, domestic commercial and industrial generator catagories, catagory by prime and standby power of generator, liquid and gas fuel of generator, generator market in Pakistan
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USEFULL INFORMATION OF PETROL, DIESEL, GAS & FURNACE OIL GENERATORS

ELECTRICAL TABLES &

THREE-PHASE CONNECTION SYSTEMS

 

POWER TABLE

 

PRESSURE & HEAD TABLE

 

VOLUME & CAPACITY TABLE

 

NEMA CODE LETTERS ON AC MOTORS

ENERGY TABLE

 

 

AREA TABLE

 

 

FLOW TABLE

 

A "Generator" is actually a combination of two machines, Engine and Alternator. Engine produces kinetic power by converting potential energy into mechanical energy, i.e., fuel (Diesel, Gas, HFO, etc.) which has potential energy into revolution of crank shaft which is kinetic or mechanical energy. The crank Shaft of the Engine shifts power to the rotor of the Alternator. The alternator then converts this mechanical energy into electric energy. This process is done through combustion of fuel. That is why these generators are called Thermal or Combustion Units.

There are a number of options available in Pakistan for some one who plans to buy alternative generator power, i.e., alternative to Wapda or Grid power.

CATAGORIES

Generators can be divided in sub categories, e.g., in accordance with location, rated power required, nature of usage, period of usage, etc. Firstly generators can be brand new imported, locally refurbished, be imported in used conditions, etc., with a lot of variations in their prices. A user can choose a machine in accordance with his budget.

New - - - - - - - - - Refurbished - - - - - - Used

Secondly generators come in domestic ratings (1 kVA to 30 kVA), commercial ratings (30 kVA to 500 kVA) and industrial ratings (500 kVA to 2 MW and onwards). Again the prices vary in accordance with generator's power.

Domestic - - Commercial - - - - - - - - - - - - - Industrial

There is also the usage nature and period factor. Generators are either installed for prime usage, i.e., for 24 hour usage or installed for standby usage, i.e., to take care of load shedding of grid connection, meaning the generator shall be operational for 5 to 10 hours daily.


Most of all, you have to choose what kind of fuel is economic for you. The available options are Diesel, Gas, Furnace Oil, etc.

Diesel - - - - - - - - - - - Gas

 

GENERATOR MARKET IN PAKISTAN

Due to load shedding generators import to Pakistan and generator prices in Pakistan have boomed up since last five years.

There are a number of international companies offering their manufactured brand new generators in Pakistan. Prominent are CATERPILLAR, CUMMINS, PERKINS, FG WILSON, DANYO, etc. The prices these companies offer vary a lot due to quality difference.

People also import used generators in Pakistan mostly having the same brand names. These generators are different in their status and prices.

Up to 500 kVA ratings are assembled in Pakistan. These are coupled generators with very effective prices for local users.

Similar to all other fields, China is also getting dominant in generator manufacturing around the globe. Almost all ratings of China manufactured generators can be bought here in local market. The advantage being the lesser prices.

 

 

 

     

 

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