LAB SHEET: LUKISAN MESIN ELEKTRIK

LUKISKAN GAMBARAJAH SKEMA LITAR KAWALAN DAN LITAR UTAMA DALAM

SATU LITAR BAGI :

– Pemula terus pada talian (DOL:Direct on line)

– Pemula mara – songsang (forward reversed)

– Pemula bintang delta (star delta)

– Pemula autopengubah (auto transformer)

Soalan 1: Direct online (DOL) Starter

MCB

TOR

PB(STOP)

PB(START)

C

C

TRIP MOTOR RUNN

L

Figure 1

2

L

c

MCB

C

TOR

TOR

PB

(START)

PB

(STOP)

MOTOR

RUN

TRIP

M

YR B

C

TOR

MCCB

Figure 2

Figure 3 : Main Circuit Of D.O.L Starter

3

MCB

TOR

PB(STOP)

F

LR

F

TRIP FORWARD REVERSEN

L

RL F

R

R F

LF

R

Soalan 2: Forward –Reverse Starter

L

F

LR

F

F

LTOR

PB

(STOP)

FORWARD

RUN

FORWARD

TRIP

MCB TOR

R

R

RRF

LF

REVERSE

RUN

REVERSE

N

Figure 1: Control circuit of Forward – Reverse Starter

Figure 2: Control circuit of Forward – Reverse Starter

4

M

YR B

F

TOR

MCCB

R

Figure 3: Main circuit of Forward – Reverse Starter

5

Soalan 3: Start Delta Starter.

MCB

TOR

PB

(STOP)

M

TRIPN

L

D

D

S

D

TDR SM

PB

(START)

MAIN TIMER STAR DELTA RUN

TDR

Figure 1: Control circuit of Star Delta Starter

6

L

M

M

TOR

PB

(STOP)

TRIP

MCB TOR

TDR

TDR

NPB

(START)

S

TDR D

D

RUN

DELTA

STAR

TIMER

MAIN

D

S

YR B

M

TOR

MCCB

D S

Figure 2 : Control circuit of Star Delta Starter

Figure 3 : Main circuit of Star Delta Starter

7

Soalan 4: Auto Transformer Starter

MCB

TOR

PB

(STOP)

C4

TRIPN

L

C3

C2

C1 C2

TDR C1C4

PB

(START)

MAIN TIMER STAR DELTA RUN

TDR

C4

C3

C1 C3

L

C4

C4

TOR

PB

(STOP)MCB TOR

TDR

NPB

(START)

C2

C1

TIMER

C4

TDR C3

C1

C3TDR C1 C2

C3

RELAY

STEP

STEP

MAIN

RUN

TRIP

Figure 1: Control circuit of Auto Transformer Starter

Figure 2 : Control circuit of Auto Transformer Starter

8

YR B

TOR

MCCB

C1

C2

M

Figure 3 : Main circuit of Auto Transformer Starter