JINDAL ELECTRICAL’SJINDAL ELECTRICAL’SLUDHIANALUDHIANA

PRESENTED BY:-

TANPREET KAUR(314054408)

AND

JASPREET KAUR(314054421)

ELECTRICAL

VISUAL AID ON 6 MONTH INDUSTRIAL TRAINING AT

ABOUT THE ORGANIZATION

Jindal Electricals Was Established In 1967 By Mr. B.B JindalJindal Is One Of The Main Electrical Industries Of IndiaThey Are Pioneer In The Field Of Rectifiers, Special Purpose Transformers & Industrial Servo StabilizerToday They Have Three Associates Units.They Are:-

JINDAL ELECTRICALS 390-A, INDUSTRIAL AREA-A LUDHIANA

JINDAL ELECTRIC & MACHINERY CORP. C-57 FOCAL PT. LUDHIANA

JINDAL RECTIFIERS, FARIDABAD

JINDAL’S INDIAN CLIENTS

Hindustan Lever Ltd. L & T Ltd. Birla’s Tata’s Ashok Leyland Ltd. Escort India Ltd. Lipton India Ltd. Hero Cycles Ltd. Atlas Cycles Ltd. Avon Cycles Ltd. Pfizer India Ltd. Ranbaxy India Ltd.And Many More . . . . . . . . . . . . .

JINDAL’S FOREIGN CLIENTS

United Fibers in BANGLADESH.

M/s Medical Technologies Ltd. In UZBEKISTAN.

Shivam Plastics Ltd. in NEPAL.

M/s Patplast Nog Ltd. in NIGERIA

PRODUCTS

RECTIFIER

SPECIAL PURPOSE TRANSFORMER

AUTOMATIC VOLTAGE CONTROLLER

ISOLATION TRANSFORMER

GENERAL TRENDS OF VOLTAGE

VOLTAGE TIMING

340 – 460 V 09:00 AM – 12:00 AM

400 – 440 V 12:00 AM – 02:00 PM

340 – 400 V 02:00 PM – 06:00 PM

400 – 430 V 06:00 PM – 10:00 PM

400 – 470 V 10:00 PM – 05:00 AM

400 – 450 V 05:00 AM – 09:00 AM

VOLTAGE VARIATION

VOLTAGE FLUCTUATION IS A COMMON PHENOMENON ALL OVER THE COUNTRY. GENERALLY VOLTAGE IS LOW DURING THE DAYTIME BUT HIGH DURING NIGHT HOURS. ALSO VOLTAGE FLUCTUATION IS A SEASONAL PROBLEM.

EFFECTS OF VOLTAGE VARIATIONS

Higher current produces higher losses in electrical motors which causes premature failure of winding.

These higher losses of electric motors also increase the losses of cables, switches, transformers and other associated equipments.

INCREASESENERGY

CONSUMPTION

NON UNIFORM QUALITY OF

THE ENDPRODUCT

REDUCES POWER FACTOR

EFFECTS OF VOLTAGE

VARIATION

MAIN COMPONENTS OF AVC

MAIN TRANSFORMERLINEAR REGULATORAUTO TRANSFORMERCARBON ROLLER ASSEMBLYSYNCHRONOUS MOTORBUSBARCONTROL PANELTRANSFORMER OILTANK

THREE MAIN PARTS OF SERVO

LINEAR PLUS/MINUS TYPE VERTICAL ROLLING CONTACT TYPE REGULATOR

DOUBLE WOUND BUCK/BOOST TRANSFORMER

CONTROL PANEL

VARIOUS SECTIONS

WINDING SECTION

ELECTRIC SECTION

CORE SECTION

FITTING SECTION

CORE

IT PROVIDES AN EASY PATH TO THE FLOW OF FLUX. THE CORE IS MADE UP OF CRGO (cold rolled grain oriented) STEEL IN ORDER TO REDUCE THE CORE LOSSES. IT HAS VERY HIGH PERMIABILITY.

DIFFERENT TYPES OF CORES ARE

BLACK GREY CRGO YELLOW WHITE

TYPES OF CUTTING OF CORE

NON – MITRED

HALF – MITRED

FULLY – MITRED

V – NOTCH MITRED

TYPES OF CORE ASSEMBLIES

SHELL TYPE

CORE TYPE

LIST OF COMPONENTS USED IN CORE SECTION

DIFFERENT TYPE OF YOKE ACCORDING TO SIZE OF CORE

CRGO LOW SPEED SILICON STEEL

FOOT PRESS CUTTING MACHINE

DRILL MACHINE

TYPES OF WINDINGS MADE IN WINDING SECTION

IN WINDING SECTION MAINLY TWO TYPE OF WINDINGS ARE DONE

THESE ARE:-

SERIES TRANSFORMER

REGULATOR

WINDING OF REGULATOR

INNER VIEW OF AN AVC

REGULATOR

SYNCHRONOUS MOTOR

SERIES TRANSFORMER

CLOSE VIEW OF SERIES TRANSFORMER

LIST OF COMPONENTSUSED IN FITTING SECTION

CARBON ROLLERS

DRILL MACHINE

CHAIN

TROLLEY

LIST OF COMPONENTS USED IN ELECTRIC SECTION

SYNCHRONOUS MOTOR

RC SET

MICRO SWITCH

WIRES

WORKING OF AN AVC

WORKING PRINCIPLE

WORKING

Flux is in the same direction so the voltage

gets added

Primary wdg is short circuited

so no current flows

in the primary..

Flux in the opposite direction so o/p is the diff of the

I/p & the emf induced..

CONTROL PANEL

FOR 3 - PHASE

BALANCED TYPE CIRCUIT

CONTROL PANEL

It comprises of control unit with sensing circuit.

This unit acts as a control center for the whole regulator, the electronic circuit senses the voltage variation and according to the variation it controls the movement of rollers.

Control panel is used in automatic voltage controller for automatically and manually controlling the servo.

LIST OF COMPONENTSUSED IN CONTROL PANEL

AUTO TRANSFORMERCONTROL TRANSFORMERIC CARDCUT OFF CARDVOLTMETERAMMETERVOLTMETER SELECTOR SWITCHAMMETER SELECTOR SWITCHDPDT SWITCHINDICATORSPOTENTIOMETER

FUNCTIONS OF VARIOUS COMPONENTS OF CONTROL PANEL

ITEM FUNCTIONS

IC CARD AUTOMATIC CONTROL OF MOTOR

CUT OF CARD HIGH VOLTAGE CUT

CONTROL T/F(9-0-9V) FOR VOLTAGE OUTPUT OF 9/18 ACC . TO REQUIREMENT

AUTO T/F (400-220V) TO STEP DOWN THE VOLTAGE

10 AND 12 PIN CONNECTOR

TO FIT CUT OFF CARD AND IC CARD

AMMETER TO CHECK LOAD CURRENT

VOLTMETER TO CHECK I/P AND O/P VOLTAGE

INDICATORS TO SHOW PHASE SUPPLY R,Y,B

POTENTIOMETER VARY THE RESISTANCE

FUNCTIONS OF VARIOUS PINS OF AN IC CARD

PIN NUMBER FUNCTION

1 & 2 9 VOLTS SUPPLY

3 DIRECTLY PHASE IS GIVEN

5 & 6 18 VOLTS SUPPLY

7 or 8 POTENTIOMETER

9 or 10 LOWER IS GIVEN

11 or 12 RAISE IS GIVEN

FUNCTIONS OF VARIOUS PINS OF AN CUT OFF CARD

PIN NUMBER FUNCTION

1 & 3 18 VOLTS SUPPLY

8 RAISE THE MOTOR

9 RAISE TERMINAL TO SWITCH

INNER VIEW OF CONTROL PANEL

TWO WORKING MODES OF THE PANEL ARE

AUTO MODE

MANUAL MODE

CONNECTIONS OF SYNCHRONOUS MOTOR

SPECIFICATIONS OF SYNCHRONOUS MOTOR

TYPE 1-Φ SYNCHRONOUS (CAPACITOR START)

VOLTAGE 220V (AC)

CURRENT 250 mA

TORQUE 10/20 Kg-cm

HORSE POWER 0.008 HP

FREQUENCY 50 Hz

SPEED 60 R.P.M.

TESTING OF AVC

NO-LOAD TEST

MEGGER TEST

RANGE TEST

50% LOAD TEST

HEAT RUN TEST

PANEL TEST

NO LOAD TESTING

This test is done to check the range of the stabilizer for which it is built, variable input is given to terminals of an AVC and the output is kept open. Firstly minimum voltage of the range is given and the output is checked. Then the maximum voltage of the range is applied and again the output is checked.

MEGGER TESTING

IN THIS TESTING AN INSTRUMENT CALLED MEGGER IS USED. THIS TEST IS DONE TO CHECK THE INSULATION LEVEL OF THE STABILIZER AND TO CHECK IF THERE IS NO SHORT CIRCUIT IN RTHE SYSTEM.READINGS ARE TAKEN AT THREE DIFFERENT PARTS:-

LINE TO EARTH

LINE TO CORE

EARTH TO CORE

RANGE TEST

THIS TEST IS DONE IN ORDER TO TEST THE RANGE OF SERVO CONTROLLED VOLTAGE REGULATOR.IT CAN BE CHECKED BY UTILIZING THE EQUIPMENT TO ITS MAXIMUM AND MINIMUM VOLTAGE AND CURRENT RANGE.

50 % LOAD TESTING

IN THIS TEST 50 % OF FULL LOAD IS PUT ON THE STABILIZER AND OUTPUT IS SHORT CIRCUITED. THIS TEST IS DONE TO CHECK THE HEATING EFFECT OF EQUIPMENT USED IN STABILIZER.THIS TEST IS ESSENTIAL BEFORE WE PUT IT INTO OIL TANK. IN AIR WE CANNOT PUT FULL LOAD ON THE STABILIZER DUE TO HEATING.

HEAT RUN TEST

THIS TEST IS DONE TO CHECK THE RISE IN TEMPERATURE OF THE STABILIZER WHEN IT IS WORKING ON FULL LOAD.

RISE IN TEMP = SERVO INTERNAL TEMP - AMBIENT TEMP

PANEL TESTING

THIS TEST IS DONE TO CHECK THE EFFICIENT WORKING OF THE PANEL. THIS IS DONE IN TWO MODES:-

AUTO MODE

MANUAL MODE

FUNCTIONS OF INSULATION OIL

IT PROTECTS ADDITIONAL INSULATION

PROTECTS PAPER FROM DIRT AND MOISTURE

CARRY AWAY THE HEAT GENERATED IN THE CORE AND COILS

PROPERTIES OF INSULATION OIL

HIGH DIELECTRIC STRENGTH

FREE FROM INORGANIC ACID ALKALI AND CORROSIVE SULPHUR

LOW VISCOSITY

FREE FROM SLUGGING

METHODS OF COOLING

OIL IMMERSED NATURAL COOLED TRANSFORMER

OIL IMMERSED FORCED AIR COOLED TRANSFORMER

OIL IMMERSED WATER COOLED TRANSFORMER

OIL IMMERSED FORCED WATER COOLED TRANSFORMER

AIR BLAST TRANSFORMER

ADVANTAGES OF LT OVER HT

In case of malfunctioning of electronic system any stabilizer could go on increasing the output voltage, if this problem happens in HT stabilizer it can damage the distribution t/f. These t/f are more prone to failure with over voltage even for shorter period as compared to over load for longer time. In case same thing happening on LT stabilizer it will not damage the distribution t/f.

Thank You