8.9
Date Code 20081022
Instruction Manual
SEL-787 Relay
Front-Panel Operations
Human-Machine Interface
Select the
Open Breaker 1
or
2
menu item to assert Relay Word bits OC1 or
OC2, which will open breaker 1 or 2 via SEL
OGIC®
equations TR1 or TR2.
for equations TR1 and TR2 and
for the definitions of
Word bits OC1 and OC2. Note that this requires Level 2 access.
Select the
Close Breaker 1
or
2
menu item to assert Relay Word bits CC1
or CC2, which will close the breaker 1 or 2 via the CL1 or CL2 SEL
OGIC
). Note that this requires Level 2 access.
Select the
Outputs
menu item from the
CONTROL
menu as shown in
to test (pulse) SEL-787 output contacts and associated circuits.
Choose the output contact by navigating through the
OUTPUT
menu and test it
by pressing the
{ENT}
pushbutton. Note that testing the output contact requires
Level 2 access and reconfirmation.
Figure 8.18
CONTROL Menu and OUTPUTS Submenu
Select the
Local
Bits
menu item from the
CONTROL
menu for local control
action. Local bits take the place of traditional panel switches, and perform
isolation, open, close, or pulse operations.
With the settings as per the example in
for more information), local bit 1 replaces a supervisory switch.
shows the screens in closing the supervisory switch. In this operation, local bit
LB01 is deasserted (SUPER SW = OPEN), and changes to asserted (SUPER
SW = CLOSE) as shown in the final screen of
Figure 8.19
CONTROL Menu and LOCAL BITS Submenu
CONTROL
Open
Close
Outputs
Local Bits
OUTPUTS
OUT101
OUT102
OUT103
.
.
.
(Outputs Selected)
LOCAL BITS
SUPERV SW = OPEN
SUPERV SW = OPEN
CLOSE
CLOSE
YES No
SUPERV SW = CLOSE
OPEN
CONTROL
Open
Close
Outputs
Local Bits
(Local Bits Selected)
(SUPERV SW Selected)
(CLOSE Selected)
(Yes Selected)
Summary of Contents for SEL-787
Page 1: ...20081022 SEL 787 Transformer Protection Relay Instruction Manual PM787 01 NB ...
Page 6: ...This page intentionally left blank ...
Page 12: ...This page intentionally left blank ...
Page 18: ...This page intentionally left blank ...
Page 78: ...This page intentionally left blank ...
Page 206: ...This page intentionally left blank ...
Page 280: ...This page intentionally left blank ...
Page 334: ...This page intentionally left blank ...
Page 376: ...This page intentionally left blank ...
Page 388: ...This page intentionally left blank ...
Page 474: ...This page intentionally left blank ...
Page 508: ...This page intentionally left blank ...