Siemens 7SA511 Verifying the Installation and Relay Configuration, Relay Commissioning Tests

7SA511 Line Protection Relay Chapter 7

7. Commissioning the Relay

This chapter describes the commissioning procedures you may perform after the relay is installed, is programmed for your system, and is operating in its intended environment.

7.1 Verifying the Installation and Relay Configuration

The relay’s event log and target log data may be useful for commissioning. The event log is under address block 5100, and the target logs for the last three faults are under address blocks 5200, 5300, and 5400, respectively. The waveform capture function also provides additional fault information.

The measured values recorded for the relay are also useful for commissioning. Address block 5700 displays the measured phase and neutral currents, voltages, and apparent power of the protected system.

For ungrounded systems, the ground fault data log is under address block 5500 and the measured values are under address block 5800.

Chapter 6, “Displaying System and Relay Information,” describes in more detail the type of data available for display in the operator panel LCD.

7.2 Relay Commissioning Tests

Commissioning tests are intended to verify correct operation of the relay when it is connected to and operating in a normal manner with the system it is intended to protect.

WARNING

Hazardous conditions.

Can cause death, serious injury, or property damage.

Primary tests should be performed only by qualified personnel trained in commissioning of protection systems and familiar with the operation of the protected equipment.

July 27, 1995 7-3