Tesla Resistors
TESLA BLATNÁ offers a wide range of resistors based on two main technologies: power wirewound resistors for use in applications with high braking, charging, discharging or heating power requirements, and thick-film high voltage resistors for high voltage/low inductance applications.
In addition to our standard program, we focus on manufacturing resistors that we develop together with our customers. Thanks to our many years of experience, we always propose the most suitable design solution for the application and use. TESLA power resistors optimize the operating performance of the machine, ensure its reliable operation, and extend its lifetime. We are flexible and customer-oriented, and our product range is growing rapidly.
TESLA resistors
There are three basic series of TESLA resistors. These are wirewound resistors in aluminium housing - TR31x, TR33x and TR35x series, wirewound cemented resistors - TR26x and TR30x series, and thick-film high voltage resistors - 3WK 608 0x series. The range is further expanded with different variants and modifications responding to increased requirements in terms of power load, pulse overload capacity, ohmic value, degree of protection, and price/performance ratio.
Aluminium housed resistors: UL-certified aluminium housed resistors are high-performance wirewound resistors with IP54 and higher. The resistors are short-circuit resistant and offer a wide range of applications due to their compact design. The chosen construction and design of the resistors guarantee maximum impulse stability with high rated continuous performance at the same time. All materials are non-flammable. Custom-designed resistors are available on request and in various combinations of assemblies.
Aluminum housing ensures quick heat dissipation from the resistor. The housing is non-corrosive, non-magnetic, lightweight, and mechanically resistant.
Silica sand with excellent electrical insulation properties fills the space between the resistive winding, the ceramic, and the housing. It increases the mechanical resistance of the resistor and optimizes heat dissipation from the resistor body.
The ceramic with high mechanical strength, electrical insulation, and thermal shock resistance provides maximum protection and insulation to the resistive winding.
The hydrophobic cement mixture reliably protects the internal parts of the resistor.
The resistive winding, with its high operating temperature and high melting temperature, guarantees a high pulse load on the resistor.
Flexible electrical conductors of different types and materials are used for reliable connection of resistors even in harsh conditions.
The brass coupling ensures a perfect connection of the resistive winding to the resistor pins.
TR311-313
Aluminium housed resistor with IP65 protection
Power: 100 - 150 W
Ohmic range: 2R - 300R
Tolerance: 5 - 10 %
Max. surface temperature: 250°C
Max. operating voltage: 700 - 1000 V
Datasheet
TR314-319
Aluminium housed resistor with IP65 protection
Power: 100 - 600 W
Ohmic range: 1R0 - 1K2
Tolerance: 5 - 10 %
Max. surface temperature: 250°C
Max. operating voltage: 1000 - 2800 V
Datasheet
TR331-336
Aluminium housed resistor with IP65 protection
Power: 100 - 600 W
Ohmic range: 1R0 - 1K2
Tolerance: 5 - 10 %
Max. surface temperature: 250°C
Max. operating voltage: 1000 - 2800 V
Datasheet
TR351-356
Aluminium housed resistor with IP65 protection
Power: 150 - 600 W
Ohmic range: 1R3 - 1K1
Tolerance: 5 - 10 %
Max. surface temperature: 250°C
Max. operating voltage: 1000 - 2000 V
Datasheet
TR340-343
Aluminium housed resistor with IP65 protection
Power: 30 - 90 W
Ohmic range: 0R7 - 160R
Tolerance: 5 - 10 %
Max. surface temperature: 250°C
Max. operating voltage: 300 - 700 V
Datasheet
TR351.02-356.02
Aluminium housed resistor with IP65 protection
Power: 150 - 600 W
Ohmic range: 1R3 - 1K1
Tolerance: 5 - 10 %
Max. surface temperature: 250°C
Max. operating voltage: 1000 - 2000 V
Datasheet
TR314.32-319.32
Aluminium housed resistor with IP65 protection
Power: 90 - 240 W
Ohmic range: 1R0 - 1K2
Tolerance: 5 - 10 %
Max. surface temperature: 250°C
Max. operating voltage: 1000 - 2800 V
Datasheet
XTR 319 / 355 / 356
Assemblies of aluminium housed resistors (IP54)
Power: 240 - 1200 W
Ohmic range: 3R4 - 4K8
Tolerance: 10 %
Max. surface temperature: 250°C
Max. operating voltage: 600 V
Datasheet
XTR 355A / 356A
Assemblies of aluminium housed resistors (IP54)
Power: 1000 - 2400 W
Ohmic range: 1R4 - 4K4
Tolerance: 10 %
Max. surface temperature: 250°C
Max. operating voltage: 600 V
Datasheet
To achieve maximum heat dissipation from the resistor, we recommend that the resistors are properly mounted on a sufficiently large cooling plate. Heat transfer can be further improved by applying a thermally conductive paste between the aluminum housing of the resistor and the plate.
Outlets
The standard 30 cm long outlets are made of high-temperature material rated up to 250 °C. However, there is also a choice of leads made of other materials, leads with non-standard lengths and with different types of terminations (contacts, connectors, terminal blocks). The conductors can be fitted with fuses or other design elements.
Aluminum housings
TESLA offers four standard shapes of aluminium housings. These housings can be further customised, particularly according to the application and the size of the installation space. Additional mounting and retaining holes can be drilled, threads and grooves can be milled, and the degree of protection of the internal part of the resistor can be increased by riveting or screwing on additional metal coverings.
Thermal Switches
For power resistors, temperature is very important. If the internal or external parts of the resistor get too hot, failure can occur. For continuous temperature monitoring, we offer the possibility to equip the resistor with a thermo switch. The temperature-defined thermoswitch can be placed either directly in the cement grout or as an external thermoswitch on the aluminum housing.
APPLICATIONS AND USES
APPLICATIONS
Automation Technology
Electric drives
Robotics
Robotic sorters
Conveyor belts
Handling systems
Energy
Wind power plants
Heat pumps
Photovoltaic systems
Filtration systems
UPS back-up systems
Equipment manufacturing
Rolling gates
Escalators
Elevators
Stage technology
Medical technology
Transport and Logistics
Conveyor belts
Crane technology
Shipbuilding
Railway technology
Dynamic energy storage systems
Power Electronics
Frequency converters
Rectifiers
Capacitors
Servo controllers
Mechanical Engineering
Production machines
Welding technology
Machine tools
Textile machinery
USE
• Braking resistors
• Charging resistors
• Discharging resistors
• Circuit resistors
• Filter resistors
• Heating resistors
• Grounding resistors
• Start-up resistors
• Balance resistors
• Crowbar resistors
Downloads
| Filename | Date | Size | |
|---|---|---|---|
| Resistors 2018 | 14.4.2023 | 4,65 MB | Download |
