GE L30 Instruction Manual page 264

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 FlexEle-
ment™ can be programmed to work with all analog actual values measured by the relay. The
ting is entered in per-unit values using the following definitions of the base units:
Table 5–16: FLEXELEMENT™ BASE UNITS
87L SIGNALS
(Local IA Mag, IB, and IC)
(Diff Curr IA Mag, IB, and IC)
(Terminal 1 IA Mag, IB, and IC)
(Terminal 2 IA Mag, IB and IC)
87L SIGNALS
(Op Square Curr IA, IB, and IC)
(Rest Square Curr IA, IB, and IC)
BREAKER ARCING AMPS
(Brk X Arc Amp A, B, and C)
DCmA
5-120
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 5–48: 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
I = maximum primary RMS value of the +IN and –IN inputs
BASE
(CT primary for source currents, and 87L source primary current for line differential currents)
BASE = Squared CT secondary of the 87L source
2
× cycle
BASE = 2000 kA
BASE = maximum value of the
under the +IN and –IN inputs.
L30 Line Current Differential 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
DCMA INPUT MAX setting for the two transducers configured
5 SETTINGS
value. If set to "Under", the
set-
FLEXELEMENT 1 PICKUP
GE Multilin