Siemens SIPROTEC 5 User Manual

Structure of the Function
The Supervision of the device-internal analog-digital converters function is located in the Power-system
data function group of each 3-phase current measuring point.
[dwschstr-040211-01.tif, 1, en_US]
Figure 8-24 Structure/Embedding of the Function
Function Description
Errors in the current circuits are detected if
I
F
= |iA + iB + iC + iN| > Threshold value + Slope of the characteristic 1 •Σ| i | and
I
F
> Slope of the characteristic 2 • (Σ| i | - Base point 2)
With the current inputs (iA, iB, iC, and iN), the device calculates:
•
The fault current I
F
= |iA + iB + iC + iN|
•
The maximum current Σ| i | = |iA|+|iB|+|iC| + |iN|
[lokenisu-240413-01.tif, 2, en_US]
Figure 8-25 Characteristic Curve of the Supervision of the Device-Internal Analog-Digital Converters
8.4.2.2
8.4.2.3
Supervision Functions
8.4 Supervision of the Device Hardware
SIPROTEC 5, Fault Recorder, Manual 395
C53000-G5040-C018-5, Edition 11.2017

Siemens SIPROTEC 5 Specifications

General

Series	SIPROTEC 5
Communication Protocols	IEC 61850, DNP3, Modbus
Cybersecurity	Role-based access control, secure communication
Modular Design	Yes
Hardware Redundancy	Optional
Operating Temperature	-25°C to +70°C
Digital Inputs	Configurable, number depends on I/O modules
Digital Outputs	Configurable, number depends on I/O modules
Analog Inputs	Configurable, number depends on I/O modules
Current Transformer Inputs	Configurable, number depends on I/O modules
Voltage Transformer Inputs	Configurable, number depends on I/O modules
Time Synchronization	IRIG-B, SNTP, PTP
Protection Functions	Overcurrent, Differential, Distance, Over/Under Voltage, Frequency
Housing	19-inch Rack Mount
Dimensions	Depends on module configuration
Weight	Depends on module configuration
Voltage Input	24V DC, 48V DC, 110V DC, 125V DC, 220V DC, 250V DC