9.29
Date Code 20080213 Instruction Manual SEL-351A Relay
Setting the Relay
Relay Word Bits (Used in SEL
OGIC Control Equations)
35 79RS Reclosing relay in the Reset State (see Figure 6.5 and Table 6.1)
79CY Reclosing relay in the Reclose Cycle State (see Figure 6.5 and Tab le 6 .1 )
79LO Reclosing relay in the Lockout State (see Figure 6.5 and Table 6.1)
SH0 Reclosing relay shot counter = 0 (see Tab le 6.3)
SH1 Reclosing relay shot counter = 1 (see Tab le 6.3)
SH2 Reclosing relay shot counter = 2 (see Tab le 6.3)
SH3 Reclosing relay shot counter = 3 (see Tab le 6.3)
SH4 Reclosing relay shot counter = 4 (see Tab le 6.3)
36 CLOSE Close logic output asserted (see Figure 6.1) Output contact assignment
CF Close Failure condition (asserts for 1/4 cycle; see Figure 6.1) Indication
RCSF Reclose supervision failure (asserts for 1/4 cycle; see Figure 6.2)
OPTMN Open interval timer is timing
(see Reclosing Relay on page 6.12)
Testing
RSTMN Reset timer is timing
(see Reclosing Relay on page 6.12)
FSA A-phase fault identification logic output used in A phase targeting (see
Front-Panel Target LEDS on page 5.10)
Control
FSB B-phase fault identification logic output used in B phase targeting (see
Front-Panel Target LEDS on page 5.10)
FSC C-phase fault identification logic output used in C phase targeting (see
Front-Panel Target LEDS on page 5.10)
37 BCW BCWA + BCWB + BCWC Indication
50P32
b
Three-phase overcurrent threshold exceeded (see Figure 4.21)Testing
*
c
59VA
b
Channel VA voltage window element (channel VA voltage between
threshold settings 25VLO and 25VHI; see Figure 3.27)
TRGTR Target Reset. TRGTR pulses to logical 1 for one processing interval when
either the {TARGET RESET} Pushbutton is pushed or the TAR R (Target
Reset) serial port command is executed (see Figure 5.1 and Figure 5.4)
Control
52A Circuit breaker status (asserts to logical 1 when circuit breaker is closed;
see Figure 6.1)
Indication
*
c
*
c
38 SG1 Setting group 1 active (see Ta bl e 7 .3 )
SG2 Setting group 2 active (see Tabl e 7 .3 )
SG3 Setting group 3 active (see Tabl e 7 .3 )
SG4 Setting group 4 active (see Tabl e 7 .3 )
SG5 Setting group 5 active (see Tabl e 7 .3 )
SG6 Setting group 6 active (see Tabl e 7 .3 )
ZLOUT
b
Load encroachment āload outā element (see Figure 4.2) Special phase overcurrent
element control
ZLIN
b
Load encroachment āload inā element (see Figure 4.2)
Table 9.6 Relay Word Bit Definitions for SEL-351A (Sheet 12 of 16)
Row Bit Definition Primary Application
Courtesy of NationalSwitchgear.com
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