Functionality; Function Block; Signals; Settings - ABB RET650 Technical Manual

1MRK 504 135-UEN A
8.3.2
8.3.3
8.3.4
8.3.5
Table 81: EFPIOC Group settings (basic)
Name Values (Range)
Operation
IN>>
Table 82: EFPIOC Non group settings (basic)
Name Values (Range)
GlobalBaseSel
Technical manual

Functionality

The Instantaneous residual overcurrent protection EFPIOC has a low transient
overreach and short tripping times to allow use for instantaneous earth-fault
protection, with the reach limited to less than typical eighty percent of the transformer
impedance at minimum source impedance. EFPIOC can be configured to measure the
residual current from the three-phase current inputs or the current from a separate
current input. EFPIOC can be blocked by activating the input BLOCK.

Function block

EFPIOC
I3P*
BLOCK
IEC08000003 V1 EN
Figure 68: EFPIOC function block

Signals

Table 79: EFPIOC Input signals
Name
I3P
BLOCK
Table 80: EFPIOC Output signals
Name
TRIP

Settings

Unit
Off -
On
1 - 2500 %IB
Unit
1 - 6 -
TRIP
Type Default Description
GROUP - Three phase group signal for current inputs
SIGNAL
BOOLEAN 0 Block of function
Type Description
BOOLEAN Trip signal
Step Default
- Off
1 200
Step Default
1 1
Section 8
Current protection
Description
Operation Off / On
Operate residual current level in % of
IBase
Description
Selection of one of the Global Base Value
groups
153