I= 770 0 a, Example, 119 (european size) – GE Industrial Solutions DV-300 DC Drive Users Manual User Manual
Page 247
DV-300 Adjustable Speed Drives
——— FUNCTION DESCRIPTION ———
6
119
(European size)
1 s
30 s
60 s
1 s
30 s
60 s
1 s
30 s
60 s
1 s
30 s
60 s
Base current = 00 % I
2,00
1,75
1,50
1,25
1,00
Overload
curren
t/
I
dAN
dAN
0,1
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1,0
Overload time / (Pause time + Overload time)
Overload time
Base current = 25 % I
2,00
1,75
1,50
1,25
1,00
Overload
curren
t/
I
dAN
dAN
0,1
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1,0
Overload time / (Pause time + Overload time)
Overload time
Base current = 50 % I
2,00
1,75
1,50
1,25
1,00
Overload
curren
t/
I
dAN
dAN
0,1
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1,0
Overload time / (Pause time + Overload time)
Overload time
Base current = 75 % I
2,00
1,75
1,50
1,25
1,00
Overload
curren
t/
I
dAN
dAN
0,1
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1,0
Overload time / (Pause time + Overload time)
Overload time
I
= 770 ... 1050 A
dAN
Example
Motor
P = 30 kW, Armature volts = 420 V, Armature current = 82 A
Loadcycle
The motor is overloaded for 1 s at 180 % of the rated current, then it works at the rated
load for at least 5 s. Four quadrant converter.
Procedure
At first select the dc current according to the motor rated current. Usually it is the motor
rated current. If the determined motor operating point is not below the Overload curve of
the converter, the calculation should be repeated with the next larger converter size.
Converter
6KDV3110Q4E14AI