Schweitzer Engineering Laboratories SEL-351-5, Instruction Manual

Page: 386 / 706

9.30
SEL-351-5, -6, -7 Relay Instruction Manual
Date Code 20070117
Setting the Relay
Relay Word Bits (Used in SEL
OGIC
Control Equations)
37 BCW BCWA + BCWB + BCWC Indication
50P32 Three-phase overcurrent threshold exceeded (see Figure 4.21 ) Testing
*
b
59VA Channel VA voltage window element [channel VA voltage between threshold
settings 25VLO and 25VHI; see
Figure 3.26 ]
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 5.17 )
Control
52A Circuit breaker status (asserts to logical 1 when circuit breaker is closed; see
Figure 6.1 )
Indication
*
b
*
b
38 SG1 Setting group 1 active (see Table 7.3 )
SG2 Setting group 2 active (see Table 7.3 )
SG3 Setting group 3 active (see Table 7.3 )
SG4 Setting group 4 active (see Table 7.3 )
SG5 Setting group 5 active (see Table 7.3 )
SG6 Setting group 6 active (see Table 7.3 )
ZLOUT Load encroachment “load out” element (see Figure 4.2 ) Special phase overcurrent
element control
ZLIN Load encroachment “load in” element (see Figure 4.2 )
39 ZLOAD ZLOUT + ZLIN (see Figure 4.2 )
BCWA A-phase breaker contact wear has reached 100% wear level
(see
Breaker Monitor on page 8.2 )
Indication
BCWB B-phase breaker contact wear has reached 100% wear level
(see
Breaker Monitor on page 8.2 )
BCWC C-phase breaker contact wear has reached 100% wear level
(see
Breaker Monitor on page 8.2 )
*
b
*
b
*
b
*
b
40 ALARM
ALARM
output contact indicating that relay failed
or PULSE ALARM command executed (see Figure 7.27 )
OUT107 Output contact OUT107 asserted (see Figure 7.27 )
OUT106 Output contact OUT106 asserted (see Figure 7.27 )
OUT105 Output contact
OUT105
asserted (see Figure 7.27 )
OUT104 Output contact
OUT104
asserted (see Figure 7.27 )
OUT103 Output contact OUT103 asserted (see Figure 7.27 )
OUT102 Output contact OUT102 asserted (see Figure 7.27 )
OUT101 Output contact
OUT101
asserted (see Figure 7.27 )
Table 9.6 Relay Word Bit Definitions for SEL-5, -6, -7 (Sheet 12 of 18)
Row Bit Definition Primary Application