Signals - ABB RED615 Technical Manual

1YHT530004D05 D
4.5.2.7
4.5.2.8
Table 396: PHPTUV Group settings
Parameter Values (Range)
Start value
Time multiplier
Operate delay time
Operating curve type
Type of reset curve
615 series
Technical Manual
PHPTUV can be used to disconnect from the network devices, such as electric
motors, which are damaged when subjected to service under low voltage
conditions. PHPTUV deals with low voltage conditions at power system frequency.
Low voltage conditions can be caused by:
• Malfunctioning of a voltage regulator or incorrect settings under manual
control (symmetrical voltage decrease)
• Overload (symmetrical voltage decrease)
• Short circuits, often as phase-to-earth faults (unsymmetrical voltage increase).
PHPTUV prevents sensitive equipment from running under conditions that could
cause overheating and thus shorten their life time expectancy. In many cases,
PHPTUV is a useful function in circuits for local or remote automation processes
in the power system.

Signals

Table 394: PHPTUV Input signals
Name
U_A_AB
U_B_BC
U_C_CA
BLOCK
Table 395: PHPTUV Output signals
Name
OPERATE
START
Settings
Unit
0.05...1.20 xUn
0.05...15.00
60...300000 ms
5=ANSI Def. Time
15=IEC Def. Time
21=Inv. Curve A
22=Inv. Curve B
23=Programmable
1=Immediate
2=Def time reset
-1=DT Lin decr rst
Type Default Description
SIGNAL 0 Phase to earth voltage A or phase to phase
voltage AB
SIGNAL 0 Phase to earth voltage B or phase to phase
voltage BC
SIGNAL 0 Phase to earth voltage C or phase to phase
voltage CA
BOOLEAN 0=False Block signal for activating the blocking mode
Type Description
BOOLEAN Operate
BOOLEAN Start
Step Default
0.01 0.90
0.01 1.00
10 60
15=IEC Def. Time
1=Immediate
Section 4
Protection functions
Description
Start value
Time multiplier in IEC/ANSI IDMT curves
Operate delay time
Selection of time delay curve type
Selection of reset curve type
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