Controlled Switching — Buyer´s Guide
A-2
Edition 2, 2006-09
Controlled Switching with Switchsync
TM
Introduction
ABB has extensive service experience with controlled switching, and the first
generation of Switchsync™ controllers was launched in 1986. Controlled switch-
ing is used for elimination of harmful electrical transients upon planned switch-
ing of mainly capacitor banks, shunt reactors and power transformers. The
method is also gaining acceptance for reenergizing of EHV transmission lines,
and replacing traditional pre-insertion resistors. Since 1986, thousands of
Switchsync
TM
controllers have been delivered all over the world.
The Family of Switchsync
TM
controllers consists of:
Switchsync
TM
Controller Main Application
Controls Circuit
Breaker Operation
Circuit Breaker
Operation
E113
Shunt Capacitor Banks,
Shunt Reactors
Open or Close Three-pole
E213
Shunt Capacitor Banks Open and Close Three-pole
F236
Shunt Capacitor Banks,
Shunt Reactors, Power Transformers
Open and Close Single-pole
T183
Power Transformers Close Single-pole
L183
Uncompensated Transmission Lines Close Single-pole
All controllers have provisions for adaptive input to compensate for systematic variations in operating time
of the circuit breaker. In addition, Switchsync
TM
F236, T183, and L183 have provisions for two external,
predictive inputs (e.g. temperature variation, control voltage). These functions make it possible to achieve
added precision in the timing of the controlled circuit breaker. They also have a data memory that stores
information on switching times, thus permitting condition monitoring of the circuit breaker. Sensors for
compensation purposes and communication software for all controllers except E-models are accessories
that are ordered separately.
Switchsync™ E213 and F236
ABB is at the forefront of development of
controlled switching and its applications, and
has built up unique expertise in switching
transients and mitigation of related problems
in both main and secondary circuits. Our
development program is strongly focused on
providing added value for our customers.
A key aspect of all controlled switching
applications is the precision achieved during
making and breaking.
Circuit breaker HPL 550B2 controlled by
Switchsync™ for smooth shunt reactor switching.
The live tank circuit breakers supplied by
ABB are particularly well suited for controlled
switching due to their good stability in
regards to mechanical operating time and
dynamic dielectric behavior. In addition,
the Switchsync
TM
controllers are equipped
with a special adaptive control, which
compensates for any systematic variations
in operating time. Necessary signals for the
function are received from existing instrument
transformers.
To Next Page
Loading...
Need help?
General
