ABB RELION 620 Series Technical Manual page 647

1MRS757644 F
4.5.2.10
4.5.3
4.5.3.1
4.5.3.2
4.5.3.3
620 series
Technical Manual
Technical data
Table 591: PHAPTOV Technical data
Characteristic
Operation accuracy
1)2)
Start time
U
value
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
Start value = 1.0 × U
1) , voltage before fault = 0.9 × U
n
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
Start value = 1.20 × U
3) Maximum
Three-phase undervoltage protection PHPTUV
Identification
Function description
Three-phase undervoltage protection
Function block
GUID-B4A78A17-67CA-497C-B2F1-BC4F1DA415B6 V2 EN
Figure 327: Function block
Functionality
The three-phase undervoltage protection function PHPTUV is used to disconnect
from the network devices, for example electric motors, which are damaged when
Value
Depending on the frequency of the measured
voltage: f
±1.5% of the set value or ±0.002 × U
Minimum
Start
= 1.1 × set
25 ms
Fault
Typically 40 ms
Depends on the set
<35 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or ±20 ms
DFT: -50 dB at f = n × f
, f
n n
Start value multiples in range of 1.10...2.00
,
n
IEC 61850
identification
PHPTUV
Section 4
Protection functions
±2 Hz
n
Typical Maximum
28 ms 32 ms
Relative hysteresis
, where n = 2, 3, 4, 5,...
n
= 50 Hz, overvoltage in one phase-to-phase
IEC 60617 ANSI/IEEE C37.2
identification device number
3U< 27
n
3)
641