Eaton EDR-5000 Nstallation, Operation And Maintenance Manual page 566

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Commissioning: Switch Onto Fault [ANSI 50HS]

Object to be tested:

Testing the module Switch Onto Fault according to the configured operating mode:

I< (No current);

Bkr state (Breaker position);

I< (No current) and Bkr state (Breaker position); and

Bkr manual CLOSE.

Necessary means:

Three-phase current source (if the Enable Mode depends on current);

Ampere meters (may be needed if the Enable Mode depends on current); and

Test Example for Mode Bkr Manual CLOSE

The breaker has to be in the OPEN position. There must be no load current.

The status display of the device shows the signal "SOTF.

Manually switch the breaker to the CLOSE position and start the timer at the same time.

After the hold time t-enable is expired, the state of the signal has to change to "SOTF.enabled"=0.

Write down the measured time.

Mode I< (In order to test the effectiveness): Initially, do not feed any current.

Start the timer and feed with an abruptly changing current that is distinctly

greater than the I<-threshold to the measuring inputs of the relay.

Mode I< and Bkr state: Simultaneously, manually switch on the breaker

and feed with an abrupt change current that is distinctly greater than the

I<-threshold.

Mode Bkr state: The breaker has to be in the OFF position. The signal

"=0 is false. If the breaker is switched on, the signal

"=1 becomes true as long as the timer t-effective is running.

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