GE T35 UR Series Instruction Manual page 248

Transformer protection system
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5.5 FLEXLOGIC
5
The
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 FlexElement
can be programmed to work with all analog actual values measured by the relay. The
entered in per-unit values using the following definitions of the base units:
Table 5–13: FLEXELEMENT BASE UNITS
DCmA
DELTA TIME
FREQUENCY
PHASE ANGLE
POWER FACTOR
RTDs
SOURCE CURRENT
SOURCE POWER
5-126
FLEXELEMENT
DIRECTION = Over;
FLEXELEMENT INPUT
MODE = Signed;
FLEXELEMENT
DIRECTION = Over;
FLEXELEMENT INPUT
MODE = Absolute;
FLEXELEMENT
DIRECTION = Under;
FLEXELEMENT INPUT
MODE = Signed;
FLEXELEMENT
DIRECTION = Under;
FLEXELEMENT INPUT
MODE = Absolute;
Figure 5–43: FLEXELEMENT INPUT MODE SETTING
setting specifies the operating threshold for the effective operating signal of the element. If set
setting controls the element dropout. It should be noticed that both the operating signal
BASE = maximum value of the
under the +IN and –IN inputs.
BASE = 1 µs
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
P
= maximum value of V
BASE
T35 Transformer Protection System
FLEXELEMENT 1 PKP
FlexElement 1 OpSig
FLEXELEMENT 1 PKP
FlexElement 1 OpSig
FLEXELEMENT 1 PKP
FlexElement 1 OpSig
FLEXELEMENT 1 PKP
FlexElement 1 OpSig
842706A2.CDR
FLEXELEMENT 1 PICKUP
value.
FLEXELEMENT 1 PICKUP
setting for the two transducers configured
DCMA INPUT MAX
× I
for the +IN and –IN inputs
BASE
BASE
5 SETTINGS
value. If set to "Under", the
setting is
FLEXELEMENT 1 PICKUP
GE Multilin

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