Siemens 7SA511 manual Reading the Measured Values, Operational Measured Values

7SA511 Line Protection Relay Chapter 6

Table 6-5.Circuit Breaker Operation Statistics

Addr.

5601

5602

5603

5604

5605

5606

5607

5608

5609

LCD Text

RAR 1pole =

RAR 3pole =

DAR 3pole =

TRIP No L1 =

TRIP No L2 =

TRIP No L3 =

IL1/In =

IL2/In =

5IL3/In =

Description

Number of RAR attempts after single-pole trip (max. 9 digit value)

Number of RAR attempts after three-pole trip (max. 9 digit value)

Number of DAR attempts after three-pole trip (max. 9 digit value)

Number of trip commands for circuit breaker pole 1 (max. 9 digit value)

Number of trip commands for circuit breaker pole 2 (max. 9 digit value)

Number of trip commands for circuit breaker pole 3 (max. 9 digit value)

Accumulated interrupted currents for circuit breaker pole 1 (max. 7 digit, 1 decimal place value)

Accumulated interrupted currents for circuit breaker pole 2 (max. 7 digit, 1 decimal place value)

Accumulated interrupted currents for circuit breaker pole 3 (max. 7 digit, 1 decimal place value)

6.6 Reading the Measured Values

This section describes the measured values you can display using the operator panel. The ability to check the relay’s measured values is helpful during commissioning, normal operation, and troubleshooting. Measured values are calculated based on the system and protection settings programmed in the relay. In addition, two of these measured values may be selected to be displayed on the CD during normal (no-fault) operating conditions. See Chapter 5, “Programming the Relay,” for more information on programming settings in the relay.

6.6.1 Operational Measured Values (5700)

Address block 700 is used to display the operational measured values. These values are updated every five seconds when the relay is not in pickup. Values outside the permissible range are identified by asterisks (****). The measured value appears in the second line of the LCD as

shown in the exampleMEASURDVALUES1M0OPE570IL1=1060AbelowEAS. RA.TIONVALUEAL

Table 6-6 describes the measured values you can view in address block 5700. The message “NON-EXISTING” will appear in the second line of the LCD if a value cannot be calculated due to incorrect parameters.

July 27, 1995 6-15