Atlas Copco GA 37+ - Settings of Fan Motor Circuit Breaker; Settings for Motor Overload Relay

132
Instruction book
9096 3321 00
Recommended cable size (Pack and Full-Feature)
Remarks :
(1): current in the supply lines at maximum load
(2): recommended wire section under standard conditions
(3): recommended wire section under worst case conditions
(4): fuse value between () valid in case of 6 fuses for parallel supply cables
Fuse specifications IEC: gL/gG
11.3 Settings of fan motor circuit breaker
Circuit breaker
GA 37+ and GA 45+ GA 55 GA 75
Frequency
(Hz)
Voltage (V)
Fan motor circuit
breaker Q15 (A)
Fan motor circuit
breaker Q15 (A)
Fan motor
circuit breaker
Q
15
(
A
)
IEC Star-delta
50 400 3.0 5.0 7.7
11.4 Settings for motor overload relay
Overload relay and fuses
GA 37+ GA 45+ GA55 GA75
Frequency (Hz) Voltage (V) Overload
Relay F21(A)
Overload Overload
relay F21
(A)
Overload
relay F21
(A)
IEC Star-delta
50 400 50 62 71 97
Type V Hz Approval
I
tot
P (1) I
tot
FF (1)
Recommended
wire section (2)
Recommended
wire section
(3)
Main fuses
(A) (4)
GA 37+ 400 50 IEC 82 87
4 X 35 mm
2
4 X 70 mm
2
100 (50)
GA 45+ 400 50 IEC 100 110
4 X 50 mm
2
7 X 25 mm
2
125 (63)
GA 55 400 50 IEC 116 126
4 x 70 mm
2
7 x 50 mm
2
160(80)
GA 75 400 50 IEC 159 169
7 x 35 mm
2
7 x 70 mm
2
(100)