Date Code 20011009
SEL-701-1 Monitor
SEL
OGIC®
Control Equations and Monitor Logic
Relay Word Bits
B.5
Table B.2
Relay Word Bit Definitions for SEL-701-1
(Sheet 1 of 7)
Row Bit
Definition
1
STARTING
Asserts when protected motor is starting (current is greater
than 2.5 times motor rated full load current).
RUNNING
Asserts when motor is running.
STOPPED
Asserts when motor is stopped (current is less than 10% of
motor rated full load current).
JAMTRIP
Load-Jam Trip.
LOSSALRM Load-Loss Alarm and Load-Loss Trip. Assert when the
monitor detects a load-loss as defined by that function and
its settings. These Relay Word bits are inactive if the
function is disabled by monitor settings.
LOSSTRIP
46UBA
Phase Current Unbalance Alarm (46UBA) and Trip
(46UBT).
46UBT
Assert when the monitor issues an alarm or trip in response
to a current unbalance condition, as defined by that function
and its settings.
2
49A
Thermal Alarm (49A) and Trip (49T). Assert when the
monitor issues a thermal element alarm or trip due to locked
rotor starting or running overload conditions.
49T
THERMLO
Motor Lockout Conditions. Asserted by the thermal element
(THERMLO), starts per hour function (NOSLO), minimum
time between starts (TBSLO), and the antibackspin timer
(ABSLO).
NOSLO
TBSLO
ABSLO
Reserved for future use.
*
*
3
50P1T
Level 1 and Level 2 Definite-Time Phase Overcurrent
Elements.
50P2T
50N1T
Level 1 and Level 2 Definite-Time Neutral Overcurrent
Elements.
50N2T
50QT
Negative-Sequence Overcurrent Element.
50S
Motor Starting Overcurrent Element
(pickup = 2.5 • full load
current).
50G1T
Level 1 and Level 2 Definite-Time Residual Overcurrent
Elements.
50G2T
Содержание SEL-701-1
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