Figure 3.1-1 Logic Diagram: Directional Overcurrent Element (67) - Siemens 7SR224 Technical Manual

Recloser controller

Hide thumbs Also See for 7SR224:

Table of Contents

7SR224 Argus Description of Operation

Minimum Polarising Voltage

The 67 Minimum Voltage setting defines the minimum polarising voltage level. Where the measured polarising

voltage is below this level no directional output is given and operation of protection elements set as directional will

be inhibited. This prevents mal-operation under fuse failure/MCB tripped conditions where noise voltages can be

Figure 3.1-1 Logic Diagram: Directional Overcurrent Element (67)

Chapter 1 Page 18 of 70

Table of Contents