Siemens 7SR51 - Settings Menu

Parameter: 59NIT-n Time Mult
•
Default setting: 1
This setting defines the time multiplier that is applied to the selected inverse voltage curve. If a DTL char-
acteristic is selected, this setting is not used.
Parameter: 59NIT-n Delay (DTL)
•
Default setting: 0.1 s
This is the time delay setting for the element when the DTL characteristic is selected. This should be set to
suit the individual application. When a curve characteristic is selected, this setting is not used.
Parameter: 59NIT-n Reset
•
Default setting: 0 s
The reset parameter is used to define whether the element pickup resets to zero instantaneously when
the operating voltage falls below setting or a reset curve characteristic or fixed DTL is applied. This opera-
tion is significant during intermittent faults or fluctuating voltage levels.
•
Tripping Function
These elements can be used as an alarm or monitoring function. Triggering of waveform storage must be
configured if required. If the element is a tripping function it must be configured to a designated Trip
Contact to trigger a Fault Record.
Settings Menu
Functions > Protection > 59N > Gn 59N Common
Parameter Range Settings
Default Gn1 Gn2 Gn3 Gn4
Input Selection Vn
V4
Ph-Ph
Functions > Protection > 59N > Gn 59NDT-n
Parameter Range Settings
Default Gn1 Gn2 Gn3 Gn4
Element Enabled
Disabled
Disabled
Setting 1 to 200 V, Δ 0.5 V 80 V
Delay 0 to 20 s Δ 0.01 s
20 to 100 s Δ 0.1 s
100 to 1000 s Δ 1 s
1000 to 10000 s Δ 10 s
10000 to 14400 s Δ 100 s
0.1 s
Functions > Protection > 59N > Gn 59NIT-n
Parameter Range Settings
Default Gn1 Gn2 Gn3 Gn4
Element Enabled
Disabled
Disabled
Setting 1 to 200 V, Δ 0.5 V
Char
Time Mult (IEC ANSI) 0.1 to 10, Δ 0.1
10.5 to 140, Δ 0.5
1
5.23.5
Protection and Automation Functions
5.23 59N Neutral Voltage Displacement
316 Reyrolle 7SR5, Overcurrent Protection Device, Device Manual
C53000-G7040-C014-1, Edition 11.2019