Siemens Argus 7SR21 Technical Manual page 588

7SR210 & 7SR220 Commissioning & Maintenance Guide
3.5.2 D
ETERMINING
Test Procedure (Using Omicron Relay Test Set)
1. Set-up the relay with default or appropriate parameter settings (see table below).
2. Set-up Omicron current and voltage settings e.g. 63.5 V and 1.0 A three-phase.
3. Select all three currents and set an appropriate initial current level for increase on the Omicron.
4. Apply Omicron current and voltage to the relay.
5. Using the PC mouse click the appropriate arrow '
6. View the LEDs for indication of Load Blinder operation as the current increases out-of the Load Blinder
region. This is the DO point 5.
7. View the LEDs for indication of Load Blinder operation as the current decreases into the Load Blinder
region. This is the PU point 6.
Trip Level I = Vs / Z Default Settings
Parameters
Impedance Ω
Voltage V
Trip Level I = Vs / Z. Typical values.
Parameters
Impedance Ω
Voltage V
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T L
RIP EVEL
Setting
42
Point 5
63.5
Setting
42
1.591 A
63.5
' to adjust current level.
DO
DO
© 2013 Siemens Protection Devices Limited
PU
Point 6
PU
1.511 A