4.1.2.10 Technical data
Table 191: PH3xPTOC Technical data
Characteristic Value
Operation
accuracy
PH3LPTOC Depending on the frequency of the current measured: f
n
±2
Hz
±1.5% of the set value or ±0.002 x I
n
PH3HPTOC and
PH3IPTOC
±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
PH3IPTOC: I
Fault
= 2 x set
Start
value
15 ms 16 ms 17 ms
I
Fault
= 10 x set
Start value
11 ms 14 ms 17 ms
PH3HPTOC and
PH3LPTOC: I
Fault
= 2 x set
Start
value
23 ms 25 ms 28 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 fn, where n = 2, 3, 4, 5,…
Peak-to-Peak: No suppression
Peak-to-Peak + backup: No suppression
1)
Measurement mode
= default (depends on stage), current before fault = 0.0 x I
n
, f
n
= 50 Hz, fault
current in one phase 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.
4.1.3 Three-phase directional overcurrent protection DPHxPDOC
4.1.3.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Three-phase directional overcurrent
protection - Low stage
DPHLPDOC 3I> -> 67-1
Three-phase directional overcurrent
protection - High stage
DPHHPDOC 3I>> -> 67-2
Section 4 1YHT530004D05 D
Protection functions
176 615 series
Technical Manual
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