Schweitzer Engineering Laboratories SEL-351-5, Instruction Manual

Page: 391 / 706

9.35
Date Code 20070117
Instruction Manual SEL-351-5, -6, -7 Relay
Setting the Relay
Relay Word Bits (Used in SEL
OGIC
Control Equations)
59 27AB2 AB-phase-to-phase instantaneous undervoltage element (AB-phase-to-phase
voltage below pickup setting 27PP2P; see
Figure 3.23 )
Control
27BC2 BC-phase-to-phase instantaneous undervoltage element (BC-phase-to-phase
voltage below pickup setting 27PP2P; see
Figure 3.23 )
27CA2 CA-phase-to-phase instantaneous undervoltage element (CA-phase-to-phase
voltage below pickup setting 27PP2P; see
Figure 3.23 )
59AB2 AB-phase-to-phase instantaneous overvoltage element (AB-phase-to-phase
voltage above pickup setting 59PP2P; see
Figure 3.23 )
59BC2 BC-phase-to-phase instantaneous overvoltage element (BC-phase-to-phase
voltage above pickup setting 59PP2P; see
Figure 3.23 )
59CA2 CA-phase-to-phase instantaneous overvoltage element (CA-phase-to-phase
voltage above pickup setting 59PP2P; see
Figure 3.23 )
59Q2 Negative-sequence instantaneous overvoltage element (negative-sequence
voltage above pickup setting 59Q2P; see
Figure 3.24 )
3V0 3V0 configuration element (asserts when global setting VSCONN = 3V0; see
Figure 9.11 )
Indication
60 V1GOOD Positive-sequence overvoltage element (positive-sequence voltage greater
than setting VNOM • 0.75 (wye-connected) or VNOM • 0.43 (delta-con-
nected); see
Figure 4.1 )
Testing
*
b
*
b
V0GAIN V0 based on gained data
INMET Channel IN high-gain mode active (asserts at threshold just below current
channel nominal rating) Event Report
ICMET Channel IC high-gain mode active (asserts at threshold just below current
channel nominal rating)
IBMET Channel IB high-gain mode active (asserts at threshold just below current
channel nominal rating)
IAMET Channel IA high-gain mode active (asserts at threshold just below current
channel nominal rating)
Table 9.6 Relay Word Bit Definitions for SEL-5, -6, -7 (Sheet 17 of 18)
Row Bit Definition Primary Application