ELECTRICAL MACHINE LAB - I

EXPERIMENT-1: O.C AND S.C TEST ON SINGLE PHASE TRANSFORMER

O.C TEST

S.C TEST

APPARATUS REQUIRED :

1 KVA SINGLE PHASE 230 / 230V TRANSFORMER - 1 Nos2 POLE AC MCB - 1 NosSINGLE PHASE AUTO TRANSFORMER - 1 NosAMMETER (0 - 5)A MI - 2 NosVOLTMETER ( 0 - 300)V MI - 1 NosWATTMETER 230V / 5A, LPF - 1 NosFUSE - 2 Nos

EXPERIMENT-2: PARALLEL OPERATION OF TRANSFORMER

APPARATUS REQUIRED :

1 KVA SINGLE PHASE TRANSFORMER 230 / 230 V - 2 Nos.SINGLE PHASE LAMP LOAD - 1 NosWATT METER 300V / 5A UPF. - 1 NosAMMETER ( 0 - 10)A MI. - 3 Nos VOLTMETER ( 0 - 300)V MI - 3 Nos2 POLE AC MCB - 3 NosFUSE - 2 Nos

EXPERIMENT-3:

SPEED CONTROL OF DC SHUNT MOTOR ARMATURE AND FIELD CONTROL

ARMATURE CONTROL

FIELD CONTROL

APPARATUS REQUIRED :

3H.P DC SHUNT MOTOR SETUP(Armature 220V / 12.4A, Field 220V / .6A) - 1 Nos

DC MCB 15A - 1 NosDC AMMETER (0 - 15)A - 1 Nos

(0 -2)A - 1 NosDC VOLTMETER (0 - 300)V - 1 NosRHEOSTAT 220S/15A , 220S/2A - 2 Nos3 POINT STARTER - 1 NosFUSE 2A - 2 Nos

EXPERIMENT-4: STUDY OF DC MACHINE STARTER

APPARATUS REQUIRED :

3 HP DC SHUNT MOTOR SET UP - 1 NosDC MCB - 1 NosDC VOLTMETER ( 0 - 300)V - 1 NosDC AMMETER ( 0 - 2)A - 1 Nos2 POINT STARTER - 1 Nos3 POINT STARTER - 1 Nos4 POINT STARTER - 1 NosRHEOSTAT 220S / 2A - 1 NosFUSE - 2 Nos

EXPERIMENT-5: SWIN BURNE'S TEST OF DC SHUNT MOTOR :

MEASUREMENT OF ARMATURE RESISTANCE

APPARATUS REQUIRED :

3 HP DC SHUNT MOTOR SET UP - 1 NosDC MCB - 1 NosSPST - 1 NosDC VOLTMETER ( 0 - 300)V - 1 Nos

( 0 - 50)V - 1 NosDC AMMETER ( 0 - 2)A - 1 Nos

( 0 - 20)A - 1 Nos3 POINT STARTER - 1 NosRHEOSTAT 220S / 2A, 270S / 5A - 2 NosFUSE - 2 Nos

EXPERIMENT-6: NO LOAD CHARACTERISTICS OF DC GENERATOR

APPARATUS REQUIRED :

4 HP DC SHUNT MOTOR - 1 Nos3 HP DC SHUNT GENERATOR - 1 Nos2 POLE DC MCB - 1 NosSPST - 1 NosRHEOSTAT 220S / 2A - 2 Nos3 POINT STARTER - 1 NosDC AMMETER ( 0- 2)A - 2 NosDC VOLTMETER ( 0 - 300)V - 1 NosFUSE - 2 Nos

EXPERIMENT-7:

SPEED CONTROL OF DC MACHINE BY WARD LEONARD METHOD

APPARATUS REQUIRED :

1 HP THREE PHASE AC INDUCTION MOTOR - 1 Nos1 HP DC SHUNT GENERATOR - 1 Nos1 HP DC SHUNT MOTOR - 1 NosTHREE PHASE 3 POLE MCB - 1 NosSTAR - DELTA STARTER - 1 NosDC MCB - 2 NosRHEOSTAT 220S / 2A - 1 NosAMMETER ( 0 - 2)A - 2 NosVOLTMETER ( 0- 300)V - 1 NosFUSE - 5 Nos

EXPERIMENT -7: SPEED CONTROL OF DC MACHINE BY WARD LEONARDMETHOD USING THYRISTOR DRIVE

APPARATUS REQUIRED :

1 HP THREE PHASE INDUCTION MOTOR - 1 Nos1 HP DC SHUNT MOTOR - 1 Nos1 HP DC SHUNT GENERATOR - 1 NosWARD LEONARD SPEED CONTROL SYSTEM STUDY TRAINER

[PEC16HV2] - 1 NosAMMETER ( 0 - 10)A MC - 1 NosVOLTMETER ( 0 - 300 )V MC - 1 Nos

EXPERIMENT-8:

BACK TO BACK TEST OF SINGLE PHASE TRANSFORMER (Sumpner or Back to Back Test)

APPARATUS REQUIRED :

SINGLE PHASE (230 / 110V) TRANSFORMER - 2 NosSINGLE PHASE AUTO TRANSFORMER ( 0 - 230)V - 1 NosSINGLE PHASE 1KVA ISOLATION - TRANSFORMER - 1 Nos2 POLE AC MCB 5A - 1 Nos1 POLE AC MCB(SPST) - 1 NosWATTMETER 300V / 5A, LPF - 2 NosAMMETER (0 - 5)A - 1 NosVOLTMETER ( 0 - 300)V - 1 NosFUSE - 2 Nos

EXPERIMENT-9: LOAD CHARACTERISTICS OF SERIES MOTOR

APPARATUS REQUIRED :

3 HP DC SERIES MOTOR WITH LOAD SETUP - 1 Nos2 POLE DC MCB - 1 Nos2 POINT STARTER - 1 NosAMMETER ( 0 - 15)A MC - 1 NosVOLTMETER ( 0 - 300)V MC - 1 NosFUSE - 2 Nos

EXPERIMENT-10: LOAD CHARACTERISTICS OF DC COMPOUND GENERATOR

APPARATUS REQUIRED :

4 HP DC SHUNT MOTOR - 1 Nos3 HP DC COMPOUND GENERATOR - 1 NosDC MCB 15A - 2 Nos3 POINT STARTER - 1 NosRHEOSTAT 220S / 2A - 2 NosAMMETER ( 0 - 15)A - 1 Nos

( 0 - 2)A - 1 Nos( 0 - 20)A - 1 Nos

VOLTMETER ( 0 - 300) V - 1 NosFUSE - 4 NosLOADING RHEOSTAT (3KVA) - 1 Nos

EXPERIMENT-11: LOAD TEST ON SINGLE PHASE TRANSFORMER

APPARATUS REQUIRED :

1 KVA SINGLE PHASE 230 / 230V TRANSFORMER - 1 Nos2 POLE AC MCB - 1 NosSINGLE PHASE AUTO TRANSFORMER - 1 NosAMMETER ( 0 - 5A) MI - 1 NosVOLTMETER ( 0 - 300)V - 1 NosWATTMETER 230V, 5A , LPF - 1 NosFUSE - 2 NosLOADING RHEOSTAT 2KVA OR BULB LOADING - 1 Nos

EXPERIMENT-12: LOAD TEST ON DC SHUNT MOTOR

MEASUREMENT OF ARMATURE RESISTANCE

APPARATUS REQUIRED :

3 HP DC SHUNT MOTOR SET UP - 1 NosDC MCB - 1 NosDC VOLTMETER ( 0 - 300)V - 1 Nos

( 0 - 50)V - 1 NosDC AMMETER ( 0 - 2)A - 1 Nos

( 0 - 20)A - 1 Nos3 POINT STARTER - 1 NosRHEOSTAT 220S / 2A, 270S / 5A - 2 NosFUSE - 2 Nos

OTHER ACCESSORIES

1 220 V 150 A DC POWER SUPPLY

* Input :

# Voltage : 3M 350 - 440V AC 4 wire

# Frequency : 50 Hz

* Output :

# Voltage : 220 - 240 V DC

# Type : Continuously Variable

* Cooling : Natural Air

* Control : Front panel potentiometer.

* Rated Current : 150 A

* Voltmeter & Ammeter for O / P Monitoring.

* Input MCB and O / P HRC Fuse.

* Overload trip circuit.

* Single Phase preventor.

* Meters and controls on recessed front panel

* Assembled in an angle frame with caster wheels.

2. DC VARIABLE POWER SUPPLY

* Input

# Voltage : 3M 350 - 440V AC 4 wire

# Frequency : 50 Hz

* Output

# Voltage : ( 0 - 30) V DC

# Type : Continuously Variable

* Cooling : Natural Air

* Rated Current : 25 A

* Load Regulation : 2% above 12V DC

* Voltmeter (0 - 40V DC) & Ammeter ( 0 - 30A) are provided for O / P

Monitoring.

* Input MCB.

* Overload trip circuit.

* Single Phase preventor.

ELECTRICAL MACHINES LAB - II

EXPERIMENT-1:

NO LOAD AND BLOCKED ROTOR TEST ON 3 PHASE INDUCTION MOTOR

NO LOAD TEST :

BLOCKED ROTOR

APPARATUS REQUIRED :

5 HP THREE PHASE AC INDUCTION MOTOR(SQUIRREL CAGE) - 1 NosTHREE PHASE AC MCB (8A) - 1 NosSTAR, DELTA STARTER - 1 NosTHREE PHASE WATTMETER 415V / 10A, LPF - 1 NosVOLTMETER ( 0 - 500)V - 1 NosAMMETER (0 - 8)A - 1 NosFUSE - 3 Nos3 PHASE AUTO TRANSFORMER - 1 Nos

EXPERIMENT 2 LOAD TEST ON 3 PHASE ALTERNATOR

APPARATUS REQUIRED :

6 HP DC SHUNT MOTOR - 1 Nos5 HP THREE PHASE ALTERNATOR - 1 Nos2 POLE DC MCB (25A) - 1 Nos1 POLE DC MCB(SPST) - 1 Nos3 POINT STARTER - 1 NosRHEOSTAT 220S , 2A - 2 NosDC AMMETER ( 0 - 2)A - 2 NosAC AMMETER ( 0 - 10)A - 1 NosAC VOLTMETER ( 0 - 500)V - 1 NosTHREE PHASE LOADING RHEOSTAT 5KVA - 1 NosFUSE - 2 Nos

EXPERIMENT-3:

PRE DETERMINATION OF REGULATION OF BY EMF AND MMF METHOD

EMF METHOD : Calculation of Voltage regulation by Synchronous impedence method (EMF).

MMF METHOD : Calculation of regulation by Ampere - turn method (MMF)

O.C AND S.C TEST

APPARATUS REQUIRED :

6 HP DC SHUNT MOTOR - 1 Nos5 HP THREE PHASE ALTERNATOR - 1 NosDC MCB (25A) - 1 NosDC MCB (SPST) 2A - 1 Nos3 POINT STARTER - 1 NosRHEOSTAT 220S, 2A - 2 NosDC AMMETER ( 0 - 2)A - 2 NosAC VOLTMETER ( 0 - 500)V - 1 NosAC AMMETER ( 0 - 10 )A - 1 NosFUSE - 2 Nos

EXPERIMENT-4: LOAD TEST ON THREE PHASE INDUCTION GENERATOR-

APPARATUS REQUIRED

6 HP DC SHUNT MOTOR - 1 Nos5 HP THREE PHASE SLIP RING INDUCTION MOTOR SETUP - 1 Nos3 POINT STARTER - 1 NosDC MCB (25A) - 1 NosRHEOSTAT 220S, 2A - 1 NosDC AMMETER ( 0 - 2)A - 1 NosTHREE PHASE AC MCB (12A), (8A) - 2 NosAC VOLTMETER ( 0 - 500)V - 1 NosAC AMMETER ( 0 - 12)A - 1 NosTHREE PHASE LOADING RHEOSTAT - 1 NosFUSE - 2 Nos

EXPERIMENT-5:

LOAD TEST ON 3 PHASE SQUIRREL CAGE INDUCTION MOTOR

APPARATUS REQUIRED :

THREE PHASE 5 HP INDUCTION MOTOR SETUP - 1 NosTHREE PHASE AC MCB (8A) - 1 NosSTAR - DELTA STARTER - 1 NosTHREE PHASE WATT METER 500V, 10A, LPF - 1 NosAC VOLTMETER ( 0 - 500)V - 1 NosAC AMMETER ( 0 - 10)A - 1 NosFUSE - 3 Nos

EXPERIMENT-6:

SPEED CONTROL AND LOAD TEST ON 3 PHASE SLIP RING INDUCTION MOTOR

APPARATUS REQUIRED :

5 HP THREE PHASE SLIP RING INDUCTION MOTOR SETUP - 1 NosTHREE PHASE AC MCB (8A) - 1 NosSTAR DELTA STARTER - 1 NosTHREE PHASE WATTMETER 500V , 10A, LPF - 1 NosAC VOLTMETER ( 0 - 500 )V, - 1 Nos

(0 - 300)V - 1 NosAC AMMETER ( 0 - 12)A - 1 Nos

( 0 - 10)A - 1 NosTHREE PHASE ROTOR RESISTANCE - 1 NosFUSE - 3 Nos

EXPERIMENT-7:

SYNCHRONISATION OF ALTERNATOR WITH TNEB MAINS

DARK LAMP METHOD

APPARATUS REQUIRED :

6 HP DC SHUNT MOTOR - 1 Nos5 HP THREE PHASE ALTERNATOR - 1 Nos3 POINT STARTER - 1 NosDC MCB (25A) - 1 NosAC MCB (0 - 10)A - 2 NosRHEOSTAT 220S, 2A - 2 NosDC AMMETER (0 - 2)A - 2 NosAC VOLTMETER ( 0 - 500)V - 1 NosAC AMMETER ( 0 - 10)A - 1 Nos1 POLE DC MCB (SPST) - 1 NosFUSE - 2 NosSYNCHRONISATION LAMP SETUP - 1 Nos

EXPERIMENT-8:

SLIP TEST ON 3 PHASE SALIENT POLE ALTERNATOR

APPARATUS REQUIRED :

6 HP DC SHUNT MOTOR - 1 Nos5 HP THREE PHASE ALTERNATOR - 1 Nos2 POLE DC MCB (25A) - 1 Nos1 POLE DC MCB(SPST) - 1 Nos3 POINT STARTER - 1 NosRHEOSTAT 220S , 2A - 2 NosDC AMMETER ( 0 - 2)A - 2 NosAC AMMETER ( 0 - 10)A - 3 NosAC VOLTMETER ( 0 - 500)V - 1 NosTHREE PHASE LOADING RHEOSTAT 5KVA - 1 NosFUSE - 2 Nos

EXPERIMENT 9

PREDETERMINATION OF REGULATION OF ALTERNATOR BY ZPF METHOD

APPARATUS REQUIRED :

6 HP DC SHUNT MOTOR - 1 Nos5 HP THREE PHASE ALTERNATOR - 1 NosDC MCB (25A) - 1 NosDC MCB (SPST) - 1 Nos3 POINT STARTER - 1 NosRHEOSTAT 220S , 2A - 2 NosDC AMMETER ( 0 - 25)A - 3 NosAC VOLTMETER ( 0 - 500)V - 1 NosAC AMMETER ( 0 - 10)A - 1 NosFUSE - 1 NosTHREE PHASE INDUCTIVE LOAD - 1 Nos

EXPERIMENT-10 LOAD TEST SINGLE PHASE INDUCTION MOTOR

APPARATUS REQUIRED :

3 HP SINGLE PHASE INDUCTION MOTOR SETUP - 1 NosAC MCB (5A) - 1 NosSINGLE PHASE AUTO TRANSFORMER ( 0 - 230)V - 1 NosWATTMETER 300V, 5A, LPF - 1 NosAC VOLTMETER ( 0 - 300)V - 1 NosAC AMMETER ( 0 -5)A - 1 NosFUSE - 2 Nos

EXPERIMENT-11: NO LOAD AND BLOCKED ROTOR TEST

APPARATUS REQUIRED :

3 HP SINGLE PHASE INDUCTION MOTOR SETUP - 1 NosAC MCB (15A) - 1 NosSINGLE PHASE AUTO TRANSFORMER ( 0 - 230)V - 1 NosWATTMETER 300V, 5A, LPF - 1 NosAC VOLTMETER (0 - 300)V - 1 NosAC AMMETER (0 - 5)A - 1 NosFUSE - 2 Nos

EXPERIMENT 12 "U" CURVE AND "V" CURVE FOR SYNCHRONOUS MOTOR

5 HP THREE PHASE SYNCHRONOUS MOTOR - 1 Nos3 PHASE AC INDUCTION MOTOR - 1 Nos3 POLE AC MCB (8A) - 2 NosSTAR DELTA STARTER - 2 Nos2 POLE DC MCB (2A) - 1 NosDC AMMETER (0 - 2)A - 1 NosDC VOLTMETER ( 0 - 300)V - 1 NosAC AMMETER ( 0 -10)A - 1 NosAC VOLTMETER ( 0 - 500)V - 1 NosTHREE PHASE WATT METER 500V, 10A,LPF - 1 NosRHEOSTAT 220S ,2A - 1 Nos

EXPERIMENT 13 LOAD TEST ON THREE PHASE TRANSFORMER

APPARATUS REQUIRED

1 KVA THREE PHASE TRANSFORMER - 1 Nos3 PHASE AC MCB (5 A) - 1 NosTHREE PHASE AUTO TRANSFORMER - 1 NosAMMETER ( 0 - 5A) MI - 1 NosVOLTMETER ( 0 - 500 )V - 1 NosTHREE PHASE WATTMETER 500V, 5A , LPF OR UPF - 1 NosFUSE - 3 NosLOADING RHEOSTAT 2KVA OR BULB LOADING - 1 Nos

Vi Microsystems Pvt. Ltd.Plot No.75, Electronics Estate,Perungudi, Chennai - 600 096.

Phone : (044) 2496 1842.Fax : (044) 2496 1536.

E-mail: sales@vimicrosystems.comWeb : www.vimicrosystems.com

EXPERIMENT 14 STUDY AND CONTROL OF STEPPER MOTOR

APPARATUS REQUIRED

1 KG STEPPER MOTOR - 1 NosSTEPPER MOTOR CONTROL TRAINER - 1 NosFREQUENCY DISPLAY (OPTIONAL) - 1 NosSPEED DISPLAY UNIT - 1 Nos