4.1.4.11 Technical data
Table 229: DPH3xPDOC Technical data
Characteristic Value
Operation
accuracy
DPH3LPDOC Depending on the frequency of the current measured: f
n
±2
Hz
Current: ±1.5% of the set value or ±0.002 x I
n
Voltage: ±1.5% of the set value or ±0.002 x U
n
Phase angle: ±2°
DPH3HPDOC ±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
)
Voltage: ±1.5% of the set value or ±0.002 x U
n
Phase angle: ±2°
Start time
1)2)
Minimum Typical Maximum
I
Fault
= 2 x set
Start value
38 ms 40 ms 43 ms
Reset time < 40 ms
Reset ratio Typical 0.96
Retardation time < 35 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
Peak-to-Peak + backup: No suppression
1)
Measurement mode
and
Pol quantity
= default, current before fault = 0.0 x I
n
, voltage before fault =
1.0 x U
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.
4.1.5 Three-phase thermal protection for feeders, cables and
distribution transformers T1PTTR
4.1.5.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Three-phase thermal protection for
feeders, cables and distribution
transformers
T1PTTR 3lth> 49F
1YHT530004D05 D Section 4
Protection functions
615 series 225
Technical Manual
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