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Regenerative Brake
Sizing
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Regenerative Brake Operation
6. Determine the required percent of braking torque (
× 100
TQ% = TQ
B
——————
TQ
M
TQ
Where
B
TQ
M
7. Determine the peak braking horsepower (
× N
HP
= TQ
2
B
1
——————
5250
Where
TQ
B
N
1
8. Calculate the peak AC line current (
The AC line current of the 1336 REGEN Package will be at its
maximum value at the beginning of the deceleration period.
× 746
I
= HP
1
1
———————
× √3
V
L-L
HP
Where
1
V
L-L
If your application requires continuous regeneration, (
less than the rated current of the 1336 REGEN Package. Pick a
1336 REGEN Package that has an AC line current rating greater
than or equal to (
I
) at the appropriate AC line voltage.
1
If your application does not require continuous regeneration,
continue on to Step 9.
See page 3-8 for information on paralleling regenerative brakes.
9. The 1336 REGEN Package has a peak overload current rating
(
I
) of 150% of its data nameplate rating.
OL
× 1.5
I
= I
OL
RATED
I
Where
RATED
=
The Required Braking Torque
=
The Rated Motor Torque
HP
).
2
=
The Required Braking Torque
=
The Maximum Motor Speed
).
I
1
=
The Peak Braking HP
=
The Line-to-Line Utility Voltage
=
The nameplate current of the 1336 REGEN
Package
3–5
).
TQ%
) must be
I
1
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