![ABB Relion REC615 Technical Manual Download Page 277](http://html.mh-extra.com/html/abb/relion-rec615/relion-rec615_technical-manual_3045253277.webp)
4.1.4.9
Technical data
Table 302: PHPTUC Technical data
Characteristic
Value
Operation accuracy
Depending on the frequency of the current
measured: f
n
±2 Hz
±1.5% of the set value or ±0.002 × I
n
Start time
Typically <55 ms
Reset time
<40 ms
Reset ratio
Typically 1.04
Retardation time
<35 ms
Operate time accuracy in definite time mode mode ±1.0% of the set value or ±20 ms
4.2
Earth-fault protection
4.2.1
Non-directional earth-fault protection (F)EFxPTOC
4.2.1.1
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Non-directional earth-fault protec-
tion, low stage
(F)EFLPTOC
Io>
51N-1
Non-directional earth-fault protec-
tion, high stage
EFHPTOC
Io>>
51N-2
Non-directional earth-fault protec-
tion, instantaneous stage
EFIPTOC
Io>>>
50N/51N
4.2.1.2
Function block
FEFLPTOC
Io
BLOCK
START
OPERATE
ENA_MULT
EFHPTOC
Io
BLOCK
START
OPERATE
ENA_MULT
EFIPTOC
Io
BLOCK
START
OPERATE
ENA_MULT
Figure 138: Function block
1MRS758755 C
Protection functions
REC615 & RER615
Technical Manual
277