GE C60 Instruction Manual page 111

5 SETTINGS
The setting specifies the operating threshold for the effective operating signal of the element. If set
FLEXELEMENT 1 PICKUP
to "Over", the element picks up when the operating signal exceeds the
element picks up when the operating signal falls below the
The
FLEXELEMENT 1 HYSTERESIS
and the pickup threshold can be negative facilitating applications such as reverse power alarm protection. The FlexEle-
ment™ can be programmed to work with all analog actual values measured by the relay. The
ting is entered in pu values using the following definitions of the base units:
Table 5–13: FLEXELEMENT™ BASE UNITS
BREAKER ARCING AMPS
(Brk X Arc Amp A, B, and C)
dcmA
FREQUENCY
PHASE ANGLE
POWER FACTOR
RTDs
SOURCE CURRENT
SOURCE ENERGY
(SRC X Positive Watthours)
(SRC X Negative Watthours)
(SRC X Positive Varhours)
(SRC X Negative Varhours)
SOURCE POWER
SOURCE VOLTAGE
SYNCHROCHECK
(Max Delta Volts)
The
FLEXELEMENT 1 HYSTERESIS
hysteresis loop as a percentage of the pickup value as shown in the FLEXELEMENT DIRECTION, PICKUP, AND HYS-
TERESIS diagram.
The setting specifies the time unit for the setting
FLEXELEMENT 1 DT UNIT
is set to "Delta". The
FLEXELEMENT 1 COMP MODE
rate of change mode of operation. This setting is applicable only if
This
FLEXELEMENT 1 PKP DELAY
specifies the reset delay of the element.
GE Multilin
FLEXELEMENT 1 PICKUP
setting controls the element dropout. It should be noticed that both the operating signal
2
× cycle
BASE = 2000 kA
BASE = maximum value of the
under the +IN and –IN inputs.
f = 1 Hz
BASE
ϕ
= 360 degrees (see the UR angle referencing convention)
BASE
PF = 1.00
BASE
BASE = 100°C
I = maximum nominal primary RMS value of the +IN and –IN inputs
BASE
E = 10000 MWh or MVAh, respectively
BASE
P = maximum value of V
BASE BASE
V = maximum nominal primary RMS value of the +IN and –IN inputs
BASE
V = maximum primary RMS value of all the sources related to the +IN and –IN inputs
BASE
setting defines the pickup–dropout relation of the element by specifying the width of the
FLEXELEMENT 1 DT
setting specifies the pickup delay of the element. The
C60 Breaker Management Relay
FLEXELEMENT 1 PICKUP
value.
setting for the two transducers configured
DCMA INPUT MAX
× I
for the +IN and –IN inputs
BASE
. This setting is applicable only if
FLEXELEMENT 1 dt
setting specifies duration of the time interval for the
FLEXELEMENT 1 COMP MODE
FLEXELEMENT 1 RST DELAY
5.4 FLEXLOGIC™
value. If set to "Under", the
set-
FLEXELEMENT 1 PICKUP
is set to "Delta".
setting
5-47
5