4.2.1.11 Technical data
Table 283: EFxPTOC Technical data
Characteristic Value
Operation accuracy Depending on the frequency of the current
measured: f
n
±2 Hz
EFLPTOC
±1.5% of the set value or ±0.002 x I
n
EFHPTOC
and
EFIPTOC
±1.5% of set value or ±0.002 x I
n
(at currents in the range of 0.1…10 x I
n
)
±5.0% of the set value
(at currents in the range of 10…40 x I
n
)
Start time
1)2)
Minimum Typical Maximum
EFIPTOC:
I
Fault
= 2 x set
Start
value
I
Fault
= 10 x set
Start
value
16 ms
11 ms
19 ms
12 ms
23 ms
14 ms
EFHPTOC and
EFLPTOC:
I
Fault
= 2 x set
Start
value
22 ms
24 ms
25 ms
Reset time < 40 ms
Reset ratio Typical 0.96
Retardation time < 30 ms
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Operate time accuracy in inverse time mode
±5.0% of the theoretical value or ±20 ms
3)
Suppression of harmonics RMS: No suppression
DFT: -50 dB at f = n x f
n
, where n = 2, 3, 4, 5,…
Peak-to-Peak: No suppression
1)
Measurement mode
= default (depends on stage), current before fault = 0.0 x I
n
, f
n
= 50 Hz, earth-
fault current with nominal frequency injected from random phase angle, results based on statistical
distribution of 1000 measurements
2) Includes the delay of the signal output contact
3) Maximum
Start value
= 2.5 x I
n
,
Start value
multiples in range of 1.5 to 20
4.2.1.12 Technical revision history
Table 284: EFIPTOC Technical revision history
Technical revision
Change
B The minimum and default values changed to 40
ms for the
Operate delay time
setting
C Minimum and default values changed to 20 ms
for the
Operate delay time
setting
Minimum value changed to 1.00 x I
n
for the
Start
value
setting.
D Added a setting parameter for the "Measured Io"
or "Calculated Io" selection
Section 4 1YHT530004D05 D
Protection functions
272 615 series
Technical Manual
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