Brake Resistor 11kW, IP54

for Danfoss frequency inverter VLT® HVAC Drive FC 102

When the speed reference of a frequency converter is reduced, the motor acts

as a generator and the brake of the frequency converter is applied. When the

motor is operating as a generator, it supplies energy to the frequency inverter, which

is collected in the DC link. The function of the braking resistor is to act as a load on the

the DC link so that the braking power can be absorbed by the braking resistor.

If no braking resistor is used, the voltage in the DC link of the frequency inverter would

continue to rise until the fuse is tripped and the circuit is interrupted. The advantage of

using a braking resistor is that high loads can be braked quickly.

The compact brake resistor has an aluminum housing with pre-assembled brackets for

wall mounting. It is designed for a high pulse load of 60 times rated load, and therefore

suitable for horizontal and for vertical applications.

Technical Parameter

Motor output: 11,0 kW

Power supply: T4, 380-480 VAC

Operation cycle in percent: 10%

Braking resistor: 56 Ohm

Power loss: 0,68 kW

Protection class: IP54

Dimensions (HxWxD): 400x124x120 mm

Weight: 3,5 kg