ABB REC650 User Manual

6.3.2 Functionality
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. EFPIOC can be blocked by activating the input BLOCK.
6.3.3 Function block
EFPIOC
I3P*
BLOCK
TRIP
IEC08000003 V1 EN
Figure 35: EFPIOC function block
6.3.4 Signals
Table 37: EFPIOC Input signals
Name
Type Default Description
I3P GROUP
SIGNAL
- Three phase group signal for current inputs
BLOCK BOOLEAN 0 Block of function
Table 38: EFPIOC Output signals
Name
Type Description
TRIP BOOLEAN Trip signal
6.3.5 Settings
Table 39: EFPIOC Group settings (basic)
Name
Values (Range) Unit Step Default Description
Operation Off
On
- - Off Operation Off / On
IN>> 1 - 2500 %IB 1 200 Operate residual current level in % of
IBase
Table 40: EFPIOC Non group settings (basic)
Name
Values (Range) Unit Step Default Description
GlobalBaseSel 1 - 6 - 1 1 Selection of one of the Global Base Value
groups
1MRK 511 287-UEN A Section 6
Current protection
91
Technical manual

ABB REC650 Specifications

General

Brand	ABB
Model	REC650
Category	Control Unit
Language	English