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braking resistors

Product catalog summary

Overview: This document is a technical leaflet from JOVYATLAS, focusing on braking resistors used in drive technology. It outlines the functionality, design, applications, and technical specifications of different types of resistors.

How a Resistor Works: Braking resistors are used in converter circuits to manage energy when an AC motor's frequency exceeds the output frequency of the converter. The resistor converts surplus energy into heat, operating intermittently to prevent overheating.

Wire-Wound Resistors: These resistors are made from cupro-nickel wire wound around a ceramic tube or porcelain sliders. They are compact, easy to connect, and suitable for low to moderate power applications.

Technical Data: Resistive values range from 1Ω to 10Ω, with insulation voltage at 2500VAC for 1 minute, and operating voltage at 1000VAC/1100VDC. Load range is 50W to 1kW, with protection class IP00 to IP23.

Steel-Grid Resistors: These consist of steel elements with a large surface area for effective heat emission, suitable for medium to high power applications. They offer high performance in intermittent operation and are easy to install.

Technical Data: Resistive values range from 1Ω to 10Ω, with insulation voltage at 2500VAC for 1 minute, and operating voltage at 1000VAC/1100VDC. Load range is 500W to 1.7kW, with protection class IP00 to IP23.

Connection via Stud Terminals: These resistors are designed for stability under thermal shock, meeting IP54 protection class requirements, with a special design allowing up to IP65.

Technical Data: Resistive values range from 1Ω to 10Ω, with insulation voltage at 2500VAC for 1 minute, and operating voltage at 600VAC/1100VDC. Load range is 65W to 3.2kW, with protection class IP50 to IP65.

Data Sheet: The document includes a detailed table listing various resistor models, their power ratings for different relative ON-times, dimensions, and weights. This information aids in selecting the appropriate resistor based on specific operational needs.

Catalog excerpts

Manufactured byQuality management ISO9001 Leaflet710.0106a >

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To satisfy the demands of todays drive technology, much use is made of converter circuits with adjustablefrequencies for controlling a.c. motors. When it is necessary to change the speed, or as a result of braking in the drive train, the motorҒs frequency is greater than the output frequency of the frequency converter. In this case, the motor works as a generator and supplies energy that in most cases is converted into heat via a braking resistor.The way the braking resistor works is determined by the operational condition of the motor. As a rule, thebraking resistor is only switched on briefly...

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Technical data: Technical data: Resistive values: 1 Load range: 65W 3.2kW (without additional heat sink) Protection class: IP50 ֖ IP65 Resistive values: 1 Load range: 500W 1.7kW Protection class: IP00 ֖ IP23 Connection via stud terminals - 10 - 10 Advantages: > Insulation voltage: 2500VAC / 1 min Operating voltage: 600VAC /1100VDC Insulation resistance: <20M Insulation voltage: 2500VAC / 1 min Operating voltage: 1000VAC /1100VDC Insulation resistance: <20M High performance inintermittent operationForced cooling for enhanced performanceSturdy structure Simple installation > Applications: Applications:...

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braking resistors

braking resistors

Catalog excerpts

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