GE D30 Instruction Manual page 283

CHAPTER 5: SETTINGS
— This setting specifies the operating threshold for the effective operating signal of the element. If
FLEXELEMENT 1 PICKUP
set to "Over," the element picks up when the operating signal exceeds the
element picks up when the operating signal falls below the
— This setting controls the element dropout. Notice that both the operating signal and the
FLEXELEMENT 1 HYSTERESIS
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
per-unit values using the following definitions of the base units.
Table 5-19: FlexElement base units
Unit
BREAKER ARCING AMPS
(Brk X Arc Amp A, B, and C)
DCmA
DELTA TIME
FAULT LOCATION
FREQUENCY
D30 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 5-73: FlexElement input mode setting
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;
Description
2
× cycle
BASE = 2000 kA
BASE = maximum value of the DCMA INPUT MAX setting for the two transducers configured
under the +IN and –IN inputs
BASE = 1 µs
BASE = Line Length as specified in Fault Report
f = 1 Hz
BASE
FLEXELEMENT 1 PKP
FlexElement 1 OpSig
FLEXELEMENT 1 PKP
FlexElement 1 OpSig
FLEXELEMENT 1 PKP
FlexElement 1 OpSig
FLEXELEMENT 1 PKP
FlexElement 1 OpSig
FLEXELEMENT 1 PICKUP
value.
FLEXELEMENT 1 PICKUP
FLEXELEMENT 1 PICKUP
FLEXLOGIC
842706A2.CDR
value. If set to "Under," the
setting is entered in
5-151
5