Load resistor banks
Heating and Brazing Solutions
Loval Engineering®
Loval
LOAD RESISTOR BANKS
Loval designs and produces a wide range
of air- and liquid cooled brake load resistors
optimized according to customer
specifications.
Typical applications include load resistors of
frequency converter drives of e.g. cranes,
oil rigs, rolling stock equipment and various
industrial applications.
Load resistor banks
Dimensioning is based on required power
and load curve Materials can be chosen
from unalloyed and alloyed steels.
Fan assisted cooling can be used in air
cooled solutions whilst in high power
application.
MATERIALS:
APPROVALS:
Zinc plated steel
EN 1.0330 + Zn
Stainless steels
EN 1.4301
EN 1.4404
LOVAL OY - Linnunrata 4 07900 Loviisa - Finland - Tel + 358 19 517 31
www.loval.fi
Load resistor banks
Loval
LOAD RESISTOR BANKS
ADVANTAGES
TYPICAL APPLICATIONS
• Feasible for various operating conditions
• Long service interval
• Durable in high temperature environment
• Approved and certificated solutions
• Tubular element protects resistor core
• Wind mills
• Cranes
• Container lifts
• Trains
• Elevators
• Frequency converters
BENEFITS
- Outstanding corrosion resistance
- No need for post-process cleaning
treatment
- The most effective process to join comlex
structures
- Uniform heat treatment without thermal stress
Specialized in
VACUUM BRAZING
Vacuum brazing process is a unique method
to join parts. During the brazing process the
braze material melts and flows into a joint
by capillary force, creating a gas-tight seal.
Vacuum treatment ensures that brazed units do
not react with the ambient gases, ensuring high
quality seam.
Brazing temperatures are between 900 – 1200
degrees under vacuum of one millionth of
atmospheric
pressure
(<0,001
mbar).
Brazing operation can be carried out not only in
vacuum but also in shield gas atmosphere. All
Loval vacuum furnaces can use nitrogen and the
latest one also argon and hydrogen as shield gas.
Vacuum brazing does not require any flux or
other additives and therefore no cleaning or
passivating processes are required.
The latest brazing method at Loval is
diffusion brazing which allows joining of
components without filler metals.
LOVAL OY - Linnunrata 4 07900 Loviisa - Finland - Tel + 358 19 517 31
www.loval.fi