Havells Lightning

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ABOUT HAVELLS

Havells India Ltd (BSE: 517354)is a billion-dollar-plusIndian electrical equipment company

Products - switchgear, cables & wires, motors, fans,power capacitors, compact fluorescent lamps (CFL),modular switches etc.

Owns global brands like Crabtree, Sylvania, Concord,Luminance, Linolite & SLI Lighting.


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Light - visually evaluated radiant energy,which stimulates mans eyes and enableshim to see.

Creating artificial light throughlamps

Discovery of electric power and the possibility oftransmitting it in a simple manner facilitated thedevelopment of modern lamps

Basic terms

Luminous efficacyThe Luminous flux

Introduction tolight


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1. Incandescent,

2. Fluorescent,3. Mercury vapor,4. Metal hallide,5. High-pressure sodium (HPS)

6. Low-pressure sodium (LPS)

TYPES OF

LAMPS


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Electric gas discharge lamps convert electrical energy into lightby transforming electrical energy into the kinetic energy bymoving electrons, which becomes radiation by collision process.

Major drawback of gas discharge lamp:

They require an auxiliary apparatus called a ballast to run withthem because gas discharge lamps have negative incrementalimpedance.

Principle of Electricgas discharge lamps


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An electrical ballast is a device intended to limit theamount of current in an electric circuit and provides highignition voltage.

A ballast serves two functions:1. Provide the starting kick.2. Limit the current to the proper value

Ballasts stabilize the current through an electrical load.Used when an electrical device presents a negative

(differential) resistance to the supply.

Ballast provides a positive resistance or reactance thatlimits the ultimate current to an appropriate level.

Balla

st


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Magnetic ballast:core and coil electromagnetic ballast.Operate lamps at line frequencyLeast expensive first cost option

Hybrid ballast:Use a magnetic core and coil transformer and an electronic switch forthe electrode heating circuit.Operate florescent lamps at line frequency.Cost more than magnetic ballast but less than electronic ballast.

Electronic ballast:Uses electronic components that operate lamps at 20-60 khz. Have half the power loss of magnetic ballast.Lamp efficacy increases when lamp operates above 20khz.Higher in first cost but reduce wattage by approximately 10-15 wattQuieter, lighter, and virtually eliminate lamp flicker.

Types of

Ballast


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COMPONENTS USED IN THE

BALLAST:

1. Resistor

2. Transistor3. Capacitor4. Drum core5. E-core

6. Toroid7. Diac8. Diodes9. Input/output wires


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E-CORE

Has an E shaped

core. Used as anInductor.

TOROID

It is a three winding transformer.

Core is in the shape of toroid . All the magnetic flux is contained in the corematerial

as it has no ends from which flux mightleak off.

Plastic

bobbin

core


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Machines used in themanufacturing process

Machinesused in the

manufacturing

process


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AXIAL COMPONENTSEQUENCER

Sequences the axial components in apredetermined pattern Re-tapes them in reel or Ammo pack

Inputreels

Outputreels

tape


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AXIAL COMPONENTINSERTER

Folds the legs of the component Places it on the PCB Cuts the extra length of the legs

Componentcutand placed

Input

reel

cutt

er


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RADIAL COMPONENTINSERTER

Radial components such as capacitors are insertedradially such asfilm capacitors.

PCB


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GLUEDISPENSER

Applies glue on the PCB forSMTcomponent placement


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FAST CHIPMOUNTER

Pick n place machine. Picks the SMT components fromthe reels. Places them on the PCB .

SMTcomponents


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ConvectionReflow Oven

It is used for dryingtheglue that is used tomount the SMD

components.


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WAVE SOLDERMACHINE

Used for solderingthecomponents on thePCB

Liquidsolder

soldered

PCB


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PREFORMINGMACHINES


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Automatic Loose Radial LeadCutting M/C

Cuts the extra lengthof thelegs of the transistorsand capacitors

Automatic Cut & BendMachine For Axials

Automatic cut & bendmachinefor axials resistors and

diodes.

Cuts and bends thecomponents

Cuttingblades


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Auto De-Taping Machine For TapedComponents

Used for de-taping componentsuniformlysuch as ceramic capacitors withhigh speed

cutter

Componentreel


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FLOWCHART


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Production ordercreated

Pull list generation

Raw material from store

Ai Insertion and

SMT placement

Preforming of MI

components

Manual Insertion


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Wave Soldering

Lead Cutting

Touch up

Inspection

Testing


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Output wire

Depaneling

Inspection

Rework

Packing

If fail


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SCHEMATIC

worki

ng


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Abnormal ConditionTest System for CFL

Electricallyheated

chamber/cabinet

Control

unit


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Integrating

spherehighlyreflectinginner

surface

CFL tobe

testedplacedinholder

Sensor


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Temperature

Profiler

Thermocouple


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HB-6A

TestCFL

Waveforms obtained


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THANKYOU

Documents

Havells Lightning