Siemens 7SA511 manual Energizing the Relay, Reading the Initial Display

7SA511 Line Protection Relay Acceptance Tests

3.2 Energizing the Relay

DANGER

Hazardous voltages in the equipment. This can cause severe personal injury and equipment damage.

Testing should be performed only by qualified personnel. Follow all safety instructions contained herein. Do not insert or withdraw the module under power. Do not make wiring connections or changes under power.

1.Connect the relay to a DC power source that provides the rated relay voltage as described in Table 3-1.

2.If a protective cover is on the relay, remove the cover to access the operator panel. Refer to “Installation” section 4.3.1 of this manual for step-by-step instructions on removing the relay protective cover.

3.Position the On/Offs itch on the operator’s panel to the “On ” position. After energizing the relay, the green PowerLED should light, and the BlockedLED will light up briefly then go out, which indicates the relay successfully completed its self-diagnostics tests.

4.Continue with section 3.2 1, “ Reading the Initial Display.”

3.2.1 Reading the Initial Display

When the7SA500relay007SA1is1first***5energized,11Vx****.***xthe text on the initial display will read as shown below:

Instead of ‘x.x’ appearing on the display, the relay firmware version, e.g., ‘2.1’, will appear.

The second line of the display shows the complete relay ordering number. The asterisks (*) shown here represent the characters that should appear in your relay’s display.

July 27, 1995 3-5