FRIZLEN publishes an overview of its power resistor range sized for regenerative frequency converter drives, slip ring motor starting, and DC motor soft starts. [S1]
For a specifying engineer, the page confirms that a single vendor covers three adjacent duties on the same drive package: dissipating regenerative energy on a VFD, stepping down rotor resistance on a slip ring motor start, and limiting inrush on a battery-fed DC motor. That matters when one supplier is being asked to harmonise protection classes, dimensional standards, and spare part strategy across a plant that mixes these drive types. It also frames braking resistor selection as a performance element, not just a protective one, since the resistor defines what peak decelerations the drive can deliver without tripping the DC bus. [S1]
What FRIZLEN published on its drive technology page
The page Industrial Drive Technology was issued by FRIZLEN and presents three resistor product lines tied to distinct drive duties. It opens with braking resistors for frequency converter drives, then covers starting resistors for slip ring motors, and closes with single-phase starting resistors for battery-fed DC motors. The framing is that resistor selection belongs at the engineering stage of a drive system rather than as an afterthought bolted to the inverter cabinet. [S1]
Specific product names and ratings on the page
The only fully specified resistor named is the T600 series with sub-family FK 3, described as a steel grid fixed resistor with continuous power rating up to 66 kW, in protection class IP00, with optional IP20 or IP23, and configured in a stepped layout for sequential short-circuiting during the start. The broader portfolio is described as spanning encapsulated flat resistors, compact lamina type resistors, steel grid resistors, and custom solutions. The page references a brake resistor calculator for initial dimensioning and a Product Finder, both intended to feed into a direct inquiry to FRIZLEN. [S1]
What it means for brake resistor specification
For a specifying engineer, the page codifies three selection contexts. First, on a VFD drive the brake resistor, also called a chopper resistor, is positioned as a performance and dynamics element that defines the achievable peak deceleration and the absorption of regenerative energy during stop and go cycles, not only a thermal safety device. Second, on slip ring motors the start resistor is presented as a modular, stepped steel grid device in which partial resistances are bypassed in sequence to ramp torque and speed in a material friendly way, with T600, FK 3 as the example. Third, on DC motors used for safety critical loads such as turbine lubrication in power plants, a single-phase starting resistor is sized to the specific battery and motor to cap inrush. Typical named applications are hoists, conveyor systems, machine tools, elevator systems, steelworks crane systems, and mining conveyor technology. [S1]
How to check the primary source
Open the source URL and confirm the product family taxonomy, the T600, FK 3 entry, and the stated 66 kW continuous rating with IP00 base and IP20 or IP23 options before quoting them in a specification. Cross check the framing of brake resistor as a performance element against the inverter or drive vendor manual for the chopper trigger threshold and minimum resistance, since FRIZLEN publishes the resistor side and the drive maker sets the electrical interface. Finally, use the linked brake resistor calculator only for an initial sizing pass and treat the result as a starting point for a formal inquiry, not as a binding selection. [S1]
Primary notice: Industry news.
Product encyclopedia: Brake Resistor.