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Chapter 4 Installation and Wiring
PAGE 4-24
4-4-1 Circuit Protection
●
Rated Values for Calculating Circuit Protection for 200-230VAC 3 phase
MFC Type Motor Type Motor Wattage # of Spindles per KVA KVA per Spindle
MFC-S024
RS1
70
8 Spindles
.125 KVA
-
-
-
-
-
MFC-S060
RS3
200
3 Spindles
.333 KVA
-
-
-
-
MFC-S120
RM4
1500
2 Spindles
.500 KVA
The chart above shows nominal motor ratings for standard motors, along with the power requirements
(200-230VAC 3 phase in KVA) for each spindle. (These already have a safety factor calculated in)
Use the formula below to compute transformer secondary fuse or circuit breaker sizing:
1.5 X
TRANSFORMER (VA)
SECONDARY VOLTAGE
.
.
3
= SECONDARY FUSE SIZE
Example:
1.5 X
1000 (VA)
200 VAC
.
.
3
= 4.3 AMP (USE 5 AMP FUSES)*
*
Use a fuse or circuit breaker with next available highest rating. Due to the high inrush current at power
up, it is recommended to use SLOW BLOW type fuses or fuses rated for motor loads such as
Bussman® FRS/FRN type.
Summary of Contents for AFC3000
Page 1: ...AFC3000E HW 1 ...
Page 17: ......
Page 18: ...Chapter 1 Outline PAGE 1 1 Chapter 1 Outline 1 ...
Page 25: ......
Page 26: ...Chapter 2 Specifications PAGE 2 1 Chapter 2 Specifications 2 ...
Page 34: ...Chapter 3 System Description PAGE 3 1 Chapter 3 System Description 3 ...
Page 64: ...Chapter 4 Installation and Wiring PAGE 4 1 Chapter 4 Installation and Wiring 4 ...
Page 131: ...Chapter 4 Installation and Wiring PAGE 4 68 Blank Page ...
Page 132: ...Chapter 5 I O Expansion Unit Page 5 1 Chapter 5 I O Expansion Unit 5 ...
Page 164: ...Chapter 6 Power up and Initial Checks PAGE 6 1 Chapter 6 Power Up and Initial Checks 6 ...
Page 168: ...Chapter 7 Fastening Instructions PAGE 7 1 Chapter 7 Fastening Instructions 7 ...
Page 207: ... Blank Page ...
Page 208: ...Chapter 8 System Operation PAGE 8 1 Chapter 8 System Operation 8 ...
Page 259: ...Chapter 8 System Operation PAGE 8 52 ...
Page 260: ...Chapter 9 Maintenance Inspection PAGE 9 1 Chapter 9 Maintenance Inspection 9 ...
Page 268: ...Chapter 10 Troubleshooting PAGE 10 1 Chapter 10 Troubleshooting 10 ...
Page 294: ......