GE D30 Instruction Manual page 276

5.6 GROUPED ELEMENTS
5
Figure 5–73: PHASE INSTANTANEOUS OVERCURRENT TIMING CURVES
ETT NG
PHASE IOC1
FUNCTION:
Enabled = 1
Disabled = 0
ETT NG
PHASE IOC1
SOURCE:
IA
IB
IC
ETT NG
PHASE IOC1
BLOCK-A:
Off = 0
ETT NG
PHASE IOC1
BLOCK-B:
Off = 0
ETT NG
PHASE IOC1
BLOCK-C:
Off = 0
Figure 5–74: PHASE INSTANTANEOUS OVERCURRENT 1 SCHEME LOGIC
5-144
ETT NG ETT NG
PHASE IOC1 PHASE IOC1
PICKUP: PICKUPDELAY:
AND RUN PHASE IOC1 RESET
DELAY:
IA ≥ PICKUP
t
PKP
t
AND RUN
RST
t
IB ≥ PICKUP
PKP
t
RST
AND RUN
t
PKP
IC ≥ PICKUP t
RST
D30 Line Distance Protection System
5 SETTINGS
FLEXLOG C
OPE AND
PHASE IOC1 A PKP
PHASE IOC1 A DPO
PHASE IOC1 B PKP
PHASE IOC1 B DPO
PHASE IOC1 C PKP
PHASE IOC1 C DPO
PHASE IOC1 A OP
PHASE IOC1 B OP
PHASE IOC1 C OP
OR PHASE IOC1 PKP
OR PHASE IOC1 OP
AND PHASE IOC1 DPO
827033A6.VSD
GE Multilin