Testing Protection Functions - Siemens SIPROTEC 5 Operation Manual

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Feed the test quantities to the terminals (for example, exchange terminals in the control cabinet) using
multiphase test equipment. Siemens recommends a test with the rated values and the infeed of current
and voltage in phase. The test functions from 10 % of the rated quantity.
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Check the measuring result in the DIGSI 5 operating program (absolute value and phase). Make use of
the phasor diagram as well as the indicated measured values. Check phase displacement between
voltage and current as well.
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In the event of implausibility, first check the proper connection of the test equipment and the angle
between voltage and current set in it. Then check the wiring to the device as well as the settings (for
examle, under Power-system data).
Figure 7-3 shows you the result of a successful test on a device which has 4 voltage and current inputs.
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To check the wiring between device and connected transformers, Siemens recommends that this test be
done on the system with primary measured signals. This allows you to check the correct connection of
secondary circuit completely.
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The device remains in commissioning mode until you set the device in the process mode consciously or
until the internal monitoring time (statement of time) has expired. You reach the process mode by clicking
the link in the upper right of the working area. The settings sheet Device information opens. Go to Device
mode to set the device in process mode.
You can execute more tests in this mode.

Testing Protection Functions

7.2.3
The purpose of this test is to verify the correct setting of protection functions and the routing of signals. To do
this, you can feed the test signals with test equipment. Digital test equipment offers you multiple test
programs and test sequences.
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Simulation mode is indicated by flashing of the top line of the device display.
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If you only want to select a graphical representation of a protection function, all available and active
protection functions of your SIPROTEC 5 device are checked.
Simple tests can also be done via simulation mode on the device and DIGSI 5 interaction. To do this, use
DIGSI 5 to generate test sequences which are then executed in the device without the need for external test
equipment and which simulate the change in values on the inputs.
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Click the Test sequences folder in the project tree.
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Open this folder by double-clicking.
Under the Create test sequence menu item create your test sequence which, for example, consists of 3 steps:
the pre-fault, the short circuit and the post-fault. You can save the created sequence and use it for other tests.
You will also find the stored sequence under the Test sequences folder. Sequences can be copied between
devices that have the same measuring points.
Figure 7-4 shows you the editor for creating test sequences. You can enter a name (for example, pre-fault,
post-fault) for every test step. You can set the duration of the current test sequence, as well as the duration of
a ramp. You can define amount and phase angle for each phase of a measuring point. You can select the
frequency in 3 phases for each measuring point.
SIPROTEC 5, Operation, Manual
C53000-G5040-C003-7, Edition 06.2016
Commissioning
7.2 Test Suite Integrated in the Device
87