Delta IED-S Series User Manual page 79

Chapter 6 Optional Accessories | IED-S
 VFDB6055 / 6110 / 6160 / 6200 Braking Modules Instruction Sheet
http://www.deltaww.com/filecenter/Products/download/06/060101/Option/DELTA_IA-MDS_VFDB6
055-6110-6160-6200_I_TSE_20121030.pdf
5. The selection tables are for normal use. If the AC motor drive requires frequent braking, increase the
Watts by two to three times.
6. Thermal Overload Relay (TOR):
Thermal overload relay selection is based on its overload capacity. A standard braking capacity of the
IED-S is 30%ED (Tripping time = 10s). As shown in the graph below, a 460V, 110 kw IED-S requires the
thermal relay to take 260% overload capacity for 10 seconds (hot starting) and the braking current is 126
A. In this case, select a thermal overload relay rated at 50 A. The specification of each thermal relay may
vary among different manufacturers. Carefully read the specification before using it.
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