Technical Revision History - ABB RELION Series Technical Manual

Section 4
Protection functions
4.4.1.11
4.4.2
4.4.2.1
4.4.2.2
4.4.2.3
4.4.2.4
414

Technical revision history

Table 420: PHPTOV Technical revision history
Technical revision
B
C
D
Three-phase undervoltage protection PHPTUV
Identification
Function description
Three-phase undervoltage protection
Function block
GUID-B4A78A17-67CA-497C-B2F1-BC4F1DA415B6 V2 EN
Figure 213: 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
subjected to service under low voltage conditions. PHPTUV includes a settable value
for the detection of undervoltage either in a single phase, two phases or three phases.
The function contains a blocking functionality. It is possible to block function outputs,
timer or the function itself, if desired.
Operation principle
The function can be enabled and disabled with the Operation setting. The
corresponding parameter values are "On" and "Off".
The operation of PHPTUV can be described using a module diagram. All the modules
in the diagram are explained in the next sections.
Change
Step value changed from 0.05 to 0.01 for the
multiplier setting.
Curve Sat relative max range widened from 3.0 to
10.0 % and default value changed from 2.0 to
0.0 %.
Type of time reset .
Added setting
IEC 61850 IEC 60617
identification identification
PHPTUV 3U<
1MRS758755 A
Time
ANSI/IEEE C37.2
device number
27
REC615 and RER615
Technical Manual