Schweitzer Engineering Laboratories SEL-700G Series, Instruction Manual, Page: 509 / 824

8.17
Date Code 20170814 Instruction Manual SEL-700G Relay
Front-Panel Operations
Operation and Target LEDs
Table 8.5 SEL-700G and SEL-700G1 Front-Panel Operator Control Functions
Continually press the
LOCK
operator control pushbutton for three (3) seconds to engage/
disengage the lock function (Latch LT01 functions as Lock with the latch in reset state
equivalent to the engaged lock). While this pushbutton is pressed, the corresponding LED
flashes on and off, indicating a pending engagement or disengagement of the lock func-
tion. The LED illuminates constantly to indicate the engaged state. While the lock func-
tion is engaged, the following operator control is “locked in position” (assuming factory-
default settings):
CLOSE
.
While “locked in position,” this operator control cannot change state if pressed—the
corresponding LEDs remain in the same state. When the lock function is engaged, the
CLOSE operator control cannot close GEN BRKR (generator breaker), but the TRIP operator
control can still trip
GEN BRKR
. Note that the
LOCK ENABLED
condition results in the
BLOCK
CLOSE LED coming ON.
Press the
AUX
operator control pushbutton to enable/disable user-programmed auxiliary
control. The corresponding LED can be programmed to illuminate during the enabled
state.
NOTE:
The AUX operator control does not perform any function with the factory-default
settings.
Press the CLOSE operator control pushbutton to close GEN BRKR . The corresponding GEN
BRKR CLOSED LED illuminates to indicate that the breaker is closed.
Option: Set a delay, so that the operator can press the CLOSE operator control pushbut-
ton and then move a safe distance away from the breaker before the SEL-700G0, -1
issues a close (the
CLOSE
operator control comes with no set delay in the factory set-
tings). With a set delay, press the CLOSE operator control pushbutton momentarily, and
notice that the
BRKR CLOSED
LED flashes on and off during the delay time, indicating a
pending close. Abort the pending close by pressing the
CLOSE
operator control push-
button again or by pressing the TRIP operator control pushbutton. This delay setting
for the
CLOSE
operator control is SV03PU (range: 0 to 3000 seconds; factory set at 0—
no delay). The delay is set via the SET L command. See Table 4.57 for more
information.
Press the TRIP operator control pushbutton to trip the GEN BRKR (and take the control to
the lockout state). The GEN BRKR OPEN LED illuminates to indicate that the breaker is
open.
Option: Set a delay, so that the operator can press the TRIP operator control pushbutton
and then move a safe distance away from the breaker before the SEL-700G0, -1
issues a trip (the
TRIP operator control comes with no set delay in the factory settings).
With a set delay, press the TRIP operator control pushbutton momentarily and notice
that the GEN BRKR OPEN LED flashes on and off during the delay time, indicating a
pending trip. Abort the pending trip by pressing the TRIP operator control pushbutton
again or by pressing the CLOSE operator control pushbutton. This delay setting for the
TRIP operator control is SV04PU (range: 0 to 3000 seconds; factory-set at 0—no
delay). The delay is set via the SET L command. See Table 4.57 for more
information.
ENABLED
LOCK
DISABLED
AUX
GEN BRKR CLOSED
CLOSE
BLOCK CLOSED
GEN BRKR OPEN
TRIP