Typy PSR, PSS, PSE, PST a PSTB ... Nejnovějším členem řady softstartérů ABB je optimální softstartér PSE. Tento Softstartér disponuje všemi potřebnými funkcemi pro ochranu motoru i softstartéru. Softstartéry PSE osazeny jazykově neutrálním podsvíceným displejem a 4mi tlačítky. Funkce jsou zobrazovány pomocí ikon, hodnoty a kódy zpráv pomocí 7mi segmentového displeje. V neposlední řadě jsou softstartéry PSE vybaveny zabudovaným by-pass kontaktem.
Matching modern power electronics with smart circuitry
and software, the ABB softstarters offer superior control the
current and voltage during motor start-up and stop, addition
to several state the art design features.
Among them are:
• Electrical problems due voltage and current transients
arising from Direct-On-Line Star-Delta starts.
This starting method many applications insufficient,
as problems with current spikes and torque peaks will
remain.
Motor voltage Motor current Torque
Graphs showing the basic differences between direct-on-line starting (DOL), star-delta starting and soft starting terms the motor voltage (V), motor current (I) and motor torque (T).
• Water hammering and pressure surges pipe systems
when starting and stopping pumps.
ABB has been producing softstarters since the beginning of
the 1980’s. The valuable experience gained since the early 80’s
has been incorporated into the design today’s product ran
ges.
The solution both mechanical and electrical problems
AC motors, “the workhorse the industry”, are used drive
fans, crushers, agitators, pumps, conveyors, etc.
The easy solution all these problems install ABB
Softstarter type PSR, PSS, PSE PST(B). One
traditional way avoid this use star delta starter. With ABB Softstar
ters, possible start and stop smoothly while keeping
mechanical and electrical stresses minimum. Depending
on how installed, too often unnecessary and unwanted
torque and current peaks are everyday reality produc
tion plants all over the world, causing damage several ways. Such
transients may overload the local supply network and
cause unacceptable voltage variations that interfere with
other electrical equipment connected the network. addition, does not provide any way perform
a soft stop.Softstarters
From the moment the first electrical motors was developed,
engineers have been searching for way avoid electrical
and mechanical problems that usually occur when starting
the motor.
4 Softstarters 1SFC132005C0201
.
• Mechanical problems that address the entire drive chain,
from motor driven equipment, causing big need for
service and repair well unwanted down time.
The financial consequences are considerable; every technical
problem and every breakdown costs money terms repairs
as well lost production. These problems include high inrush current and
current spikes well excessive mechanical wear.
• Operational problems, such damage products on
conveyor belts. softstarter the other hand will provide far
better performance during the start and also the possibility
to soft stop the motor
