Generator

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good presentation about gensets

Transcript of Generator

Basic AC Generator

AC Generator Synchronization GeneratorIntroduction:Diesel Generators are useful appliances that supply electrical power during a power outage and prevent discontinuity of daily activities or disruption of business operationsOnce youve decided to purchase a generator set, there are several considerations you must keep sin choosing which set to buy, where to install it and how to install it. This guide will help you make informed decisions during the selection and installation process.

Principle Of operationDepend on the principle of magnetic induction, an EMF is induced in a coil as a result of:A coil cutting through magnetic field.A magnetic field cutting through coil.As long as there is a relative motion between a conductor and magnetic field, a voltage will be induced in the conductor.

Generator Component

Standby OR Prime PowerThe first determination you will need to make is whether you will standby or prime power. Simply stated, prime power is required when you have no other source of power.A standby set steps in and picks up designated loads when your main power supply is not available.

Gas OR DieselThere are three main components to a generator set: A Diesel or Gas Engine which drives an electrical generator end and is monitored / governed by various Controls.Engines are either spark ignited (gas, natural gas) or compression ignited (diesel).Diesel engines are better for heavy duty and last longer.Diesel fuel is also less combustion, making it safer to handle and store. Operating SpeedElectric equipment is designed to use power with fixed frequency 60HZ or 50HZThe frequency output of a generator depends on a fixed engine speed.To produce 50HZ electricity, most engines operate at 1500 or 3000 rpm.1500 RPM, four pole sets are the most common. They offer the best balance of noise, efficiency and engine life.3600 RPM, two pole sets are smaller and lightweight, best suited for portable, light-duty applications.

Features & Benefits to lookEngine block: recommended 4 cycle, liquid cooled, industrial duty diesel engines.Air or Liquid cooling: air cooled engines require a tremendous amount of air. They are noisy too.Engine Speed: should be governed by a mechanical or electronic governor.The lubrication system: should have a full flow spin-on oil filter with bypass.DC Electrical System: starter motor, battery charger, alternator with a solid state voltage regulator, start / stop switch.Intake and Exhaust: Residential muffler.Automatic voltage Regulator: will provide clean power.A steel skid frame: keep everything in one piece and eases installation.Anti-vibration Plugs: mounts isolate engine vibration for smooth, quiet operation. What Size will I need?A set that is too small wont last, will smoke and can do damage to your electrical equipment.If it is too large, the engine will carbon up, slobber fuel and run inefficiently We recommended that a generator set never run cont. with less than 25% load.35% to 70% is optimum.To estimate your electrical load, total the wattage of all equipment youll operate at one time.In addition to load requirements, it is important to consider motor starting load. AC Switchgear and Controls All generator systems require a circuit breaker and a distribution panelThe circuit breaker protects the generator set from short circuit and unbalanced loads.The distribution panel divides and routs the connected loads and includes circuit breakers to protect these loads.Auto-start, auto-transfer systems are available.

Installation and LocationAir inlet for combustion and engine cooling.Outlets for exhaust and hot cooling air.Fuel, battery and AC electrical connections.Rigid, level mounting platforms.Open accessibility for easy service.Isolation from living space. Keep noise and exhaust away from occupied area.Space and equipment to extinguish a fire.Minimize the possibility of fire danger.Anti-Vibration Plugs.Thanks