ABB REL650 User Manual

7.3 Instantaneous residual overcurrent protection
EFPIOC
IP14508-1 v3
7.3.1 Identification
M14887-1 v4
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Instantaneous residual overcurrent
protection
EFPIOC
IN>>
IEF V1 EN-US
50N
7.3.2 Functionality
M12701-3 v16
The Instantaneous residual overcurrent protection (EFPIOC) has a low transient
overreach and short tripping times to allow the use for instantaneous earth-fault
protection, with the reach limited to less than the typical eighty percent of the line
at minimum source impedance. EFPIOC is configured to measure the residual
current from the three-phase current inputs and can be configured to measure the
current from a separate current input.
7.3.3 Function block
M12614-3 v6
EFPIOC
I3P*
BLOCK
BLKAR
ENMULT
TRIP
IEC06000269-3-en.vsdx
IEC06000269 V3 EN-US
Figure 88: EFPIOC function block
7.3.4 Signals
IP11448-1 v2
PID-6915-INPUTSIGNALS v4
Table 79: EFPIOC Input signals
Name
Type Default Description
I3P GROUP
SIGNAL
- Three phase currents
BLOCK BOOLEAN 0 Block of function
BLKAR BOOLEAN 0 Block input for auto reclose
ENMULT BOOLEAN 0 Enable current multiplier
1MRK 506 382-UEN A Section 7
Current protection
Line distance protection REL650 2.2 IEC 179
Technical manual

ABB REL650 Specifications

General

Brand	ABB
Model	REL650
Category	Protection Device
Language	English