1

(Main

DistributionBoard)(MotorControlCenter

PanelBoard)

1

1

3 (Motor Control Center)

11

1 2

2

2

(MotorControlCenter)

MCC.3

(MotorControlCenter)

(Motor Starter)

NEMA UL (MotorControlCenter)NEMA

1

NEMA

1

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4

6 3 (Vertical Section)

7 (Horizontal and Vertical Bus)

8

ULNEMA

UL

UL845

NEC 240.1

NEC430.93

1, 2 4 240

1).

2).

2

1.

2.

5

5 IEC

(Vertical Section)

6

2

(HorizontalandVerticalBus)

7

8

9

48 I S S U E 2 . V O L U M E 1 9 . A U G U S T - O C T O B E R . 2 0 1 2

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9

12

(Soft start controllers)

(Variable Frequency Drives;VFD)

(ProgrammableLogicController;PLC)

10

10

11

600

38011

6002000

300600

100kA.12

Temperature Rise

(Ambient temperature) 40

NEMA65

105UL

50

90

13

13 Temperature rise NEMA UL

(Enclosure)

IEC1

I S S U E 2 . V O L U M E 1 9 . A U G U S T - O C T O B E R . 2 0 1 2

49

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NEMA

1,2,3R12

IEC2

14 1 A

15 1 B-d

16 1 B-t

1 (IP Class) IEC

2 NEMA Enclosure Type IP Class Protection (IEC Standard) IEC

(Classification and

Type of Wiring)

NEMA2

3

1

A,BC

A 1

14

B

2

B-d

15

B-t

16

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17 1 C

3

C B

17

2

2

2BC

B1B18

18 2 B

C1C

19

19 2 C

.....

I S S U E 2 . V O L U M E 1 9 . A U G U S T - O C T O B E R . 2 0 1 2

51

s_santiwetwong@yahoo.com : .895

:

:

,

Siemens Technical Education Program, Basic of Motor Control Centers , , , 2541

ASEFA CO.,LTD ,Experiences Profile.

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