ABB SPAU 341 C User Manual page 50

1MRS 750112-MUM EN
Issued 96-03-12
Version B
Checked YK
Approved TK
Data subject to change without notice
Contents
Characteristics
Description of
operation
Manual tap-changer
control
2
Features .......................................................................................................................... 2
Description of operation ................................................................................................. 2
Function of control inputs .............................................................................................. 3
Front panel ..................................................................................................................... 3
Operation indicators ....................................................................................................... 4
mA input calibration ...................................................................................................... 4
Settings ........................................................................................................................... 5
Selector switches ............................................................................................................. 5
Measured data................................................................................................................. 6
Recorded information ..................................................................................................... 6
Menu chart ..................................................................................................................... 7
Technical data ................................................................................................................. 7
Event codes ..................................................................................................................... 8
Remote transfer data ....................................................................................................... 9
Fault codes .................................................................................................................... 11
Manual tap-changer control based on raise and
lower pulses.
Tap-changer position indication.
Recording of highest and lowest tap-changer
position.
Digital display of setting values and recorded
data.
By switching the regulator for manual mode,
the manual voltage regulating module is acti-
vated, and the tap-changer can be controlled
from the push-buttons. Pressing the raise or
lower button once makes the corresponding
LED flash. This indicates that the module is
ready for a raise or lower command. If a com-
mand cannot be executed because of an over-
current or external blocking situation, the I> or
BLOCK indicator will be lit and any operation
will be prevented. When the module is ready to
accept a command, press the active button to
SPCN 1D56
Manual voltage
regulating module
All settings to be keyed in via the MMI on the
front panel or via the serial interface using a
portable PC and a downloading program.
Self-supervision system continuously monitor-
ing the operation of the electronics and the
microprocessor. When a permanent fault is de-
tected, the alarm output relay operates and the
other outputs are blocked.
start the operation. To interrupt the operation,
press the reset button. Then the raise or lower
LED will stop blinking. When the operation is
started, the corresponding raise or lower LED
is lit and will remain so as long as the output
pulse is active. The TCO (tap-changer operat-
ing) LED will be lit during the operation of the
tap-changer, if the input is activated by the TCO
output signal from the tap-changer. Tap-changer
position is displayed in the first display posi-
tion, and can easily be observed during local
operation.