Application - ABB SPAU 140 C User Manual And Technical Description

Features

Application

Synchro-check relay for checking the conditions
at circuit breaker closing
One synchro-check relay is capable of checking
the close conditions of two separate circuit
breakers.
Synchro-check function for checking synchro-
nism when live lines/busbars are to be connected
together.
Voltage-check function for checking energizing
conditions. Four energizing directions selectable
for each circuit breaker.
The synchro-check relay SPAU 140 C is an in-
tegrated microprocessor-based voltage measur-
ing relay designed to be used for checking the
conditions for circuit breaker closing. The relay
Two control modes available: continuous mode
operation for applications where the synchro-
check relay gives the close permission to another
module (e.g. the control module) and command
mode operation for applications where the re-
lay closes the circuit breaker via its own control
output.
Alarm signal for failed CB closing at command
mode operation
Continuous self-supervision of both hardware
and software
Serial port for connecting the relay to the elec-
trical or optical SPA bus
can be used for closing ring mains, intercon-
necting busbars and connecting generators to
the network.
3