Siemens 7SA511 manual Began. E/FDetection002104357 C

7SA511 Line Protection elay Chapter 6

6.4 Data Log for Ground Faults in Ungrounded Systems (5500) (Optional)

Address block 50 , shown below, is used to store the data log for the last three ground faults in ungrounded systems (model number 7SA511*-**A5-*-1***). Skip this section if your relay has a different model5EARTHnumber500I. SFLTOLATDATAED

Fault information is recorded sequentially from the most recent fault (sequence numbers beginning with 001) to the “oldest” fault (sequence numbers beginning with 201)--the oldest ground fault data is erased when the next ground fault occurs.

6.4.1 Storage and Display Description
With address block 5500 displayed, press the	key to display the data log for ground faults in

ungrounded systems. A seri s of messages provide the pertinent data for the ground faults.

Each message isE/FDetec1200110/31/94identifi d by a sequence number in the first three character positions of the LCD.

Sequence numbers b ginning with digit ￿are assigned to messages for the most recent ground fault (see above exampl ).

Sequence numbers b ginning with digit 1 are assigned to messages for the second to last

￿ground fault.

Sequence numbers b ginning with digit 2 are assigned to messages for the third to last ground fault.

The first message within a s quence--001, 101, or 201--displays the date of the fault in the first line of the LCD as shown above. The second line displays the message “E/F Detect” followed by the consecutive ground fault number.

The second message within a sequence--002, 102, or 202--displays the time the ground fault

began. E/FDetection00210:43:57 :C

Subsequent display messages provide all the applicable data for the fault. The “End of table” message will display in the second line of the LCD to indicate there are no more messages for

each of the three reports. Press the key to display the messages for the next report.

July 27, 1995 6-13