Figure 87 Binary Outputs Setting Screen
14.
From the above figure it can be seen that the BINARY OUTPUT Terminals 1 & 2 have
been selected to simulate the circuit breaker 52B and 52A contacts. Pressing the
X
changes the contact to open indicated by the number
0
. Pressing again changes it to be
closed indicated by the number
1
. Note: while fault current is being applied to the relay,
Binary Output #1 will be closed, and Binary Output #2 is open. When the relay trips it will
record the trip time for the operation and toggle the BINARY OUTPUT contacts. When the
test set toggles the BINARY OUTPUT contacts, it starts the reclose timer. Pressing
Enter
sets the Binary Inputs and Outputs. Pressing
Main Menu
takes you back to the test
selection screen.
Note: That the test set will wait for the relay reclosing contacts to close during the Brk Trip
simulation. This time will appear in the Test Screen as the Reclose Time. However, if there is a
problem with the relay, which prevents the relay from reclosing the breaker, then the test set will
wait until the Lockout Time has expired. When the Lockout Time has expired, all outputs will turn
off and the test will be aborted.
15.
Press the
Timing Test
Button; this will take you to the Reclose Timing Test Screen.
Press the
Start
Button in the lower left corner, see Figure below. The test set applies the
output voltage(s) and fault current until the relay trips (sensed on BINARY INPUT #1).
Upon sensing trip, the output current is turned off and BINARY OUTPUT closes the 52
A
contacts, and opens the 52
B
contacts, simulating the first trip operation. Upon sensing the
relays reclose on BINARY INPUT #2, the reclose time is recorded and displayed. The test
set toggles the contacts simulating the breaker reclosing, and then reapplies the fault
current. This is repeated based on the N0. of Operations that was entered in the setting
screen.
-
116
www
. ElectricalPartManuals
. com
