Identification - ABB REC670 Applications Manual

Section 8
Current protection
8.4
8.4.1
168
Considering the safety margins mentioned previously, the minimum setting (Is) is:
I = 1.3 × I
s min
EQUATION288 V3 EN-US
The IED setting value IN>> is given in percent of the primary base current value,
IBase. The value for IN>> is given by the formula:
 
IN ( I IBase ) 100
s
IECEQUATION17003 V1 EN-US
Transformer inrush current shall be considered.
The setting of the protection is set as a percentage of the base current (IBase).
Operation: set the protection to Enabled or Disabled.
Pickup: Set operate current in % of IB.
IN>>Max and IN>>Min should only be changed if remote setting of operation current
level, IN>>, is used. The limits are used for decreasing the used range of the IN>>
setting. If IN>> is set outside IN>>Max and IN>>Min, the closest of the limits to
IN>> is used by the function. If IN>>Max is smaller than IN>>Min, the limits are
swapped.
MultPU: The set operate current can be changed by activation of the binary input
MULTPU to the set factor MultPU.
Directional residual overcurrent protection, four steps
EF4PTOC (51N/67N)

Identification

Function description
Directional residual overcurrent
protection, four steps
IEC 61850 IEC 60617
identification identification
EF4PTOC
4(IN>)
4
alt
4
TEF-REVA V2 EN-US
1MRK 511 401-UUS A
(Equation 36)
(Equation 37)
IP14509-1 v8
M14881-1 v6
ANSI/IEEE C37.2
device number
51N_67N
Bay control REC670 2.2 ANSI
Application manual