Visit
www.rmspl.com.au
for the latest product information.
Due to RMS continuous product improvement policy this information is subject to change without notice. 1B230/Issue F/15/08/07/1/5
Features
Single or double shot reclose
with selectable auto reset
mode
Shunt initiate input
Optional series initiate input
Safe to reclose input
Line voltage interlock
CB reclose spring status input
to defer auto reclose pulse until
fully charged
Lockout LED indication
Drive to lockout input
Remote reset input
Reclose in progress LED
Instantaneous protection inhibit
output & LED indication
Wide auxiliary supply range
with fail alarm contact
Independently adjustable dead
time delay per shot
Common adjustable reclaim
time delay
Optional reclose counter
Simple rugged design
Size 4M draw out case
Application
Operating records for overhead power
lines reveal that most faults are of a
transient nature (e.g. lightning induced) &
that service interruptions may be
minimized by use of automatic reclosing of
circuit breakers.
An automatic reclosure of the circuit
breaker, after the fault clears, provides
improved service continuity & system
stability.
The 1B230 Series Reclose Relay provides
for single or double shot automatic
reclosing of circuit breakers, following
interruption of supply due to a fault in the
system.
Technical Bulletin
1B230
Single or Double Shot Auto Reclose Relay
1B230 depicted in a 4M28 case
Operation
Made in Australia
The 1B230 auto reclose relay provides up to two shot auto reclose control for distribution
and transmission systems. Dead times for both shots (reclose attempts) are independently
adjustable.
An auto reclose cycle is initiated by operation of a protective relay (INP Main Protn),
provided the circuit breaker is closed until the instant of protection operation.
Dead time 1or 2 start when the circuit breaker has tripped (INP CB Aux Switch) and the
protection has reset.
At the end of the dead time, a CB close signal is given (output RLY CB Close Sig),
provided input signals are present indicating that system conditions are suitable (INP Safe
To Close), and the circuit breaker closing spring, or other energy source, is fully charged
(INP Spring Charge).
The safe to close signal is taken from a contact on a separate voltage monitor or
synchronism check relay, and the spring charged signal is taken from an auxiliary switch
contact on the circuit breaker. The CB close signal is cut off when the circuit breaker
closes.
Once the output pulse to close the circuit breaker is completed, the reclaim time starts. If
the circuit breaker remains closed until the reclaim timer times out, the 1B230 resets if in
auto mode or goes to lockout.
However if the protection operates again & the circuit breaker trips before the reclaim time
has elapsed, the 1B230 either advances to the next shot in the programmed auto reclose
cycle, of, if all programmed reclose attempts have been made, goes to lockout.