Schweitzer Engineering Laboratories SEL-421-4 - Page 135

4.7
Date Code 20171021 Instruction Manual SEL-421 Relay
Front-Panel Operations
Front-Panel Menus and Screens
Events
The Section 4: Front-Panel Operations in the SEL-400 Series Relays Instruction
Manual describes how to view summary events from the front panel. Figure 4.6
illustrates what a summary event report looks like in a SEL-421.
Figure 4.5 ENERGY, MAX/MIN, and SYNCH CHECK Metering Screens
LINE METERING
VPM = xxx.xxx V
BREAKER 1
NVS1M = xxx.xxx V
ANGLE1 = +xxx.xxx ˚
SLIP1 = xx.xxx Hz
SYNCH CHECK
BREAKER 2
NVS2M = xxx.xxx V
ANGLE2 = +xxx.xxx ˚
SLIP2 = xx.xxx Hz
ENERGY IN (MWh)
A = xx xxx.xx
B = xx xxx.xx
C = xx xxx.xx
3P = xx xxx.xx
ENERGY OUT (MWh)
A = xx xxx.xx
B = xx xxx.xx
C = xx xxx.xx
3P = xx xxx.xx
ENERGY METER
ENERGY TOTAL (MWh)
A = xx xxx.xx
B = xx xxx.xx
C = xx xxx.xx
3P = xx xxx.xx
ENERGY METER
RESET ENERGY NOW?
NO YES
LAST ENERGY RESET:
MM/DD/YYYY HH:MM:SS
CURRENTS (A)
IA MAX = xx xxx.x
MIN = xx xxx.x
IB MAX = xx xxx.x
MIN = xx xxx.x
IC MAX = xx xxx.x
MIN = xx xxx.x
I1 MAX = xx xxx.x
3I2 MAX = xx xxx.x
3I0 MAX = xx xxx.x
MAX/MIN LINE
BREAKER METERING
ACTIVE POWER (MW)
3P MAX = xx xxx.x
MIN = xx xxx.x
MAX/MIN LINE
FREQUENCY (Hz)
MAX = xx.xx
MIN = xx.xx
MAX/MIN LINE
REACTIVE (MVAR)
3P MAX = xx xxx.x
MIN = xx xxx.x
APPARENT POWER (MVA)
3P MAX = xx xxx.x
MIN = xx xxx.x
NO YES
RESET MAX/MIN NOW?
CURRENTS (A)
IA MAX = xx xxx.x
MIN = xx xxx.x
MAX/MIN BREAKER n
LAST MAX/MIN RESET:
MM/DD/YYYY HH:MM:SS
MAX/MIN BREAKER n
IB MAX = xx xxx.x
MIN = xx xxx.x
IC MAX = xx xxx.x
MIN = xx xxx.x
NO YES
RESET MAX/MIN NOW?
LAST MAX/MIN RESET:
MM/DD/YYYY HH:MM:SS
n = 1 or 2, representing Circuit
Breaker 1 or Circuit Breaker 2,
respectively.