Siemens SIPROTEC 5 User Manual

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Figure 3-52
Automatically Recalculated Secondary Values After Changes in the Current Transformer Data
If you have already set the settings in the secondary view by including the new transformation ratio of the
transformer in the calculation, then you answer the question with No. In this case all the settings in the secon-
dary view remain unchanged. DIGSI 5 recalculates the settings (threshold values) of the primary view. In the
example, the primary filtering time is then 300 A (1.5 A 1000 A/5 A = 300 A).
In the example, the current-transformer ratio changes from 1000 A/1 A to 1000 A/5 A. The following table
summarizes the pickup values that DIGSI 5 will recalculate in the setting view. The new values (in bold)
depend on your answer of the query (see Figure 3-51).
Reply to the Question
Yes No
Threshold value, secondary (active setting view) 1.5 A 0.30 A
Threshold value, primary (covered setting view) 300 A 60 A
Changing the Transformation Ratios of the Transformer on the Device
The secondary value is the default setting for the device. You may directly set only secondary values on the
device.
If you change transformer data directly on the device, it is not followed by a query, like in DIGSI (see
Figure 3-51). Instead, the device assumes that all settings remain unchanged in the secondary view.
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i
NOTE
If the device works with IEC 61850 protocol, you change the transformer data only via DIGSI 5 and not
directly on the device. If you change the transformer data directly on the device, the IEC 61850 configura-
tion of the measurement and metered values can be faulty.
3.7.3
System Functions
3.7 General Notes for Setting the Threshold Value of Trigger Functions
102 SIPROTEC 5, Fault Recorder, Manual
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