Resistor Application Scenarios
Frequency inverters:
Wherever frequency inverters are used, braking resistors/brake resistors will be used.
Frequency converter deceleration time is very short, and is the occasion of load inertia is relatively large.
When the inverter stops, the load dragged by the motor can not be stopped in time due to inertia, at this time, the motor will become a generator, and the energy it produces will be applied to the inverter module of the inverter, which will cause damage or destruction of the inverter block.
The braking resistor of the inverter is used to consume the energy generated by the motor at this time to protect the motor, to protect the inverter module of the frequency converter.
Usages/Functions & Pictures for Resistors in Field
It is responsible for consuming the energy generated when the motor decelerates or stops, for applications with frequent acceleration and deceleration, i.e. braking resistors.
Aluminum housed resistors & cement resistors SRBB for charging, SQF mounted on top of the capacitor for voltage equalization, wirewound resistors and film resistors, used in circuit boards, shunt resistors for sampling.
Elevator, lifting: for elevators, tower cranes, cranes and other large power frequency conversion energy braking.
Resistors suitable for such application
★ Aluminum Housed Resistor Series
★ High Voltage Resistors Series
★ Wirewound Resistor Series (DR)
★ High Energy Resistors Series
★ Wirewound Resistor Series (KN)
★ Water-cooled Resistor Series
★ Cement Resistors Series(SRBB/SQF)
★ Plate Wirewound Resistors
★ Shunt Resistor (FL)
★ Load Bank
★ Vitreous Enamel Wirewound Resistors (DRBY)
★ Film Resistors
★ Stainless Steel Resistors
Requirements for Resistor
Matching braking resistors for inverters have a configuration table, heavy load occasions according to the rated 3-4 times the rated resistor.
Generally, they are connected in parallel
Post time: Aug-18-2023
