Voltage Protection 27, 59 Of Side 2; Overview Voltage Protection Of Side 2; Measurement Principle - Siemens 7SC80 Manual

Addr. Parameter
377 VT Con Type S2
2.30.2

Voltage Protection 27, 59 of Side 2

2.30.2.1

Overview Voltage Protection of Side 2

The Voltage protection 27, 59 of side 2 function is similar to the Voltage protection 27, 59 function for
side 1. Similar to the voltage protection functions for side 1 voltage terminals described in chapter
Protection 27, 59, the same function is available for side 2 as well. For scenarios with open primary equip-
ment, it can be used to indicate the availablility of voltage for customized loop automation applications via
CFC-logic.
For scenarios with open primary equipment, the function can be used to indicate the availability of voltage for
customized loop automation applications.
2.30.2.2

Measurement Principle

Connection/Measured Values
The voltages supplied to the device can be either the three phase-to-ground voltages V
phase-to-phase voltages (V
specified during the configuration in parameter 219 VT Con. 3ph S2.
The following table indicates which voltages can be evaluated by the function. The settings for this are made
in the P.System Data 1 (see Section
threshold must be set. All voltages are fundamental frequency values.
Table 2-29
Function Three-phase connec-
tione Side 2 (Param-
Overvoltage protection
V2an,V2bn,V2cn
59 of side 2
V2a2b,V2b2c,VGn
V2a2b, V2b2c
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017
Setting Options
CONVENTIONAL
LoPo/LPS
Cap. Volt.Meas.
, V ) and the ground voltage of side 2 V
2A-2B 2B-2C
2.1.3.2 Setting
Voltage Protection, Selectable Voltages of Side 2
Selectable Voltage (Param-
eter 219)
Vphph (largest phase-to-
phase voltage)
Vph-n (largest phase-to-
ground voltage)
V1 (positive sequence
voltage)
Vphph selective (phase-
specific phase-tophase
voltage)
Vph-n selective (phase-
specific phase-to-ground
voltage)
Vphph (largest phase-to-
phase voltage)
V1 (positive sequence
voltage)
Vphph selective
2.30 Additional Applications with 6 Voltage Inputs
Default Setting
CONVENTIONAL
Notes). Furthermore, it is indicated to which value the
eter 616/617)
Phase-to-phase voltage
Phase-to-ground voltage
Positive sequence voltage
calculated from phase-to-ground voltage
or phase-to-phase voltage/√3
Phase-specific phase-to-phase pickup
voltage
Phase-specific phase-to-ground pickup
voltage
Phase-to-phase voltage
Positive sequence voltage
Phase-specific phase-to-phase pickup
voltage
Comments
Voltage connection type
Side2
2.6 Voltage
, V , V
2A-N 2B-N 2C-N
. The connection type has been
NS2
Threshold to be set as
Functions
or two
427