2-3. ASTAT Plus, Thermal characteristics
The ASTAT Plus allows motor protection according IEC Class 10 or Class 20 and Nema 10, 20 or 30, free selectable by parameter "o" -overload-
ASTAT-C / CD . Static soft starters
2. Types and ratings
2-3
IEC Class 10
IEC Class 20
Nema 10
Nema 20
Nema 30
Thermal memory:
If the control voltage is not removed, the unit has a cool down charac-
teristic, the time for cool down is 300 sec. after the overload trip.
If the control voltage is removed after tripping, you must wait, at least, 2
minutes before the unit can be restarted.
Operations per hour:
Supposing a cycle T, with starting time of t1, running time of T-2t1 at
rated current and OFF time of t1 sec. at least, the ASTAT Plus allows
the following operations per hour.
Starting
Operations / Hour.
Operations / Hour
Current
Starting time t1= 10sec.
Starting time t1=20 sec.
Sec.
Ir / In
Sec.
Ir / In
Sec.
Ir / In
Sec.
Ir / In
Sec.
Ir / In
2 Ir
180
90
3 Ir
160
60
4 Ir
30
10
COLD
HOT
COLD
HOT
HOT
COLD
HOT
COLD
HOT
COLD