13-54 BE1-951 Testing and Maintenance 9328900990 Rev L
Logic Timer (62)
Purpose: To verify the operation of the 62/162 Timer elements.
Reference Commands: SL-62/162, S<g>-62/162, RS-LGC
Mode 1 - Pickup/Dropout
Step 1: Prepare the 62 Timer for Mode 1 testing by transmitting the commands in
Table 13-88 to the
relay.
Table 13-88. x62 Mode 1 Test Commands
Command Purpose
A= Gains write access.
SL-N=NONE Zero out custom logic settings. Overwrite with LOGIC=NONE settings.
Y Confirm overwrite.
SL-N=T62 Sets T62 as custom logic name.
SL-43=2 Enables 43 Switch ON/OFF mode.
SN-43=62_INI,PU,DO Name switch to make SER report easier to read.
SL-62=1,43 Enables 62 PU/DO mode, 43 initiate, no blocking.
EXIT;Y Exit and save settings.
Step 2: Transmit the commands in
Table 13-89 to set the 62 function pickup and dropout time.
Table 13-89. x62 Mode 1 Pickup and Dropout Settings
Command Purpose
A= Gains write access.
S#-62=400m,2000m Sets 62 pickup at 400 milliseconds, dropout at 2,000 milliseconds.
EXIT;Y Exit and save settings.
Step 3: Transmit the commands in
Table 13-90 to the relay. These commands will initiate the 62 Timer
by changing the 43 Switch state to closed (logic 1). Once initiated, the 62 Timer will force an
output based on the 400-millisecond pickup time setting.
Table 13-90. x62 Mode 1 Timer Initiate Commands
Command Purpose
A= Gains write access.
CS-43=1 Selects 43 for On operation.
CO-43=1 Executes 43 for On operation.
Step 4: Transmit the commands in
Table 13-91 to the relay. These commands will remove the initiate
input from the 62 Timer by changing the 43 Switch state to open (logic 0).
NOTE
In these tests, the relay's virtual switches (x43) are used to initiate the 62/162
Timers. See Section 4, Protection and Control, Virtual Switches, for detailed
information about x43 Switch operation.
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