Cooper Lighting S280-79-10 manual 49

!

SAFETY

FOR LIFE

13.Set KMET test set Fault Current switch S2 in the test fault current position. Record timings from the KMET test set for all trips on the G 5X ___ locations on the test sheet.

14.Set KMET Test Set switch S4 to the 1A position.

15.Calibrate KMET fault current to 1000 percent, (50 X 10 or 500 milliamperes).

16.Press the TRIP button on the display panel.

17.Press the CLOSE button on the display panel.

18.Set KMET test set Fault Current switch S2 in the test fault current position. Record timings from the KMET test set for all trips on the G 10X ___ locations on the test sheet.

19.Repeat steps 4 – 18 for Alternate Profiles 1, 2, and 3. Note that the ground minimum trip for the Alternate Profiles is 100 amps. The 200% fault will then be 200 milliamperes, the 500% fault will then be 500 mil- liamperes, and the 1000% fault will then be 1000 mil- liamperes or 1 amps.

20.Return the Normal Profile Phase Minimum Trip Value to the pretest value, 100 amps.

Test Non-Reclose

1.Activate NON-RECLOSING (LED on).

2.Activate GROUND TRIP BLOCK (LED on).

3.Set KMET Phase Selector switch S5 to phase A.

4.Set Form 5 control to Normal Profile (all Alternate Pro- file LEDs off).

5.Adjust fault current to 200 percent or 200 mil- liamperes.

6.Press the TRIP button on the display panel.

7.Press the CLOSE button on the display panel.

8.Set KMET test set Fault Current Switch S2 to fault position.

9.Control should trip once, then indicate open and lock- out. Record time value.

10.Disable NON-RECLOSE (LED off).

11.Repeat steps 5 – 8, to lockout. Record time value.

Test Cold Load Pickup Blocked

1.Disable COLD LOAD PICKUP BLOCKED (LED off).

2.CLOSE the Form 5 control.

3.Adjust fault current to 200 percent or 200 mil- liamperes.

4.Within 30 seconds of Step 3, set KMET test set Fault Current Switch S2 to fault position.

S280-79-10

5.Control should trip twice on slow TCC curve, then indi- cate open and lockout. Record timing value.

6.Activate COLD LOAD PICKUP BLOCKED (LED on).

7.Repeat steps 2 – 4. Record value.

Test Fast Trips Disabled

1.Activate FAST TRIPS DISABLED (LED on).

2.CLOSE the Form 5 control.

3.Adjust fault current to 200 percent or 200 mil- liamperes.

4.Set KMET test set Fault Current Switch S2 to fault position.

5.Control should trip two times to lockout, on all slow TCCs, then indicate OPEN and lockout. Record value.

6.Deactivate Fast Trips Disabled (LED off).

7.Repeat steps 2 -4. Control should trip on two fast, two slow TCCs. Record values.

Test Hot Line Tag

1.CLOSE the Form 5 control.

2.Activate HOT LINE TAG (LED on).

3.Adjust fault current to 200 percent or 200 mil- liamperes.

4.Set KMET test set Fault Current Switch S2 to fault position.

5.Control should trip out once on the 101 TCC curve, then indicate open and lockout. Record value.

6.Verify that it is not possible to close the Form 5 control.

7.Deactivate HOT LINE TAG (LED off).

8.Verify that you can CLOSE the Form 5 control.

Test Reclose

1.Set KMET selector switch S3 to Control Reclose Reset.

2.Reset the KMET Time Clock if required.

3.Adjust fault current to 200 percent or 200 mil- liamperes.

4.Set KMET test set Fault Current Switch S2 to fault position.

5.After trip, turn fault switch S2 off.

6.Record reclose time.

7.Repeat steps 2 – 6 until control locks out.

49