5 isolation contactors, 6 motor starting and duty cycle conditions, Astat-sd – GE Industrial Solutions ASTAT-SD Solid-State Reduced Voltage Starter User Manual
Page 13
ASTAT-SD
™
Solid-State Reduced Voltage Starters
Chapter 2. Installation & Start-up
9
2-5 Isolation contactors
Type
Isolation
QS2BNA
CL00
QS2DNA
CL00
QS2FNA
CL01
QS2GNA
CL02
QS2HNA
CL25
QS2INA
CL45
2-6 Motor Starting and Duty Cycle Conditions
The following illustration shows allowable motor starting currents according to the starting time.
The OFF TIME is the minimum amount of time between the motor stop and motor start. The duty
cycle is the start time + stop time + off time. This graphic will enable the user to develop a duty cycle
within the capabilities of the motor starter ratings.
Maximum Starting Time
Is
For standard duty
For heavy duty
Ir
HP rating
HP rating
500%
1 sec.
3 sec.
450%
5 sec.
30 sec.
300%
20 sec.
55 sec.
200%
120 sec.
120 sec.
5
4
3
2
1
1
2
3 4 5 6 7 8 910
20
40
60 80 100
Off Time = 2 Minutes
Cold State Current
Starting Time (Seconds)
Motor Starting
current (Is)
Starter current
rating (Is)
Off T
ime = 3 Minutes