Motor Protection - ABB HF Series Manual

26 E L E C T R O N I C C O M PA C T S TA R T E R | M A N U A L
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Motor protection

The electronic compact starter protects electrical three-phase motors against:
• Thermal overload
• Phase asymmetry
• Phase failure
Order code Type
1SAT115000R1011 HF0.6-ROL-24VDC
1SAT116000R1011 HF0.6-ROLE-24VDC
1SAT125000R1011 HF2.4-ROL-24VDC
1SAT126000R1011 HF2.4-ROLE-24VDC
1SAT145000R1011 HF9-ROL-24VDC
1SAT146000R1011 HF9-ROLE-24VDC
1SAT144000R1011 HF9-R-24VDC
Table 7 HF Types with motor protection functions
The following table 8 shows the rated operational current AC-51 and AC-53a for the HF range. The maximum load, important
for overload protection, can be set. The minimum load current is important for protection against phase failure.
HF-Types/
Technical data
Rated operational current AC-51 (I
Rated operational current AC-53a (I
Minimum operational current AC-53a (I
Rated operational voltage (U )
e
Rated frequency (f)
Table 8 Minimum and maximum load current
Thermal overload
(over current)
Yes
Yes
Yes
Yes
Yes
Yes
No
HF0.6-DOL-24VDC
HF0.6-DOLE-24VDC
HF0.6-ROLE-24VDC
HF0.6-ROL-24VDC
) 0.6
e
) 0.6
e
) 0.075
e
500 V AC
50 Hz / 60 Hz
Phase Phase
asymmetry failure
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
No No
HF2.4-DOL-24VDC HF9-DOL-24VDC
HF2.4-DOLE-24VDC HF9-DOLE-24VDC
HF2.4-ROLE-24VDC HF9-ROLE-24VDC
HF2.4-ROL-24VDC HF9-ROL-24VDC
2.4 9
2.4 6.5
0.18 1.5