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S&C Instruction Sheet 461-504 55

Informational and Settings Screens

Sequence Coordination

The optional Sequence Coordination feature maintains proper coordination between

an upstream TripSaver II Cutout-Mounted Recloser and the downstream recloser when

each is set with fast and slow TCC curves. If the downstream recloser operates, the

upstream TripSaver II recloser will shift (without operating) from its Initial Trip curve

setting to a user-congured (usually slower) Sequence Coordination time-current char-

acteristic curve. The TripSaver II recloser will maintain its Sequence Coordination

setting until the Coordination Reset timer expires.

When the Sequence Coordination TCC is active and the Coordination Reset timer

expires, it will afterwards revert to the Initial Trip TCC settings. More information about

the Sequence Coordination feature with examples can be found in S&C Information

Bulletin 461-50 “TripSaver® II Cutout-Mounted Recloser: Sequence Coordination

Application Guide.”.

Sequence coordination is enabled by checking the Enable Sequence Coordination

check box. Sequence coordination uses the same TCC curves as are available for the

Initial Trip and Test 1, 2, and 3 operations. A Coordination Reset Time setting must

be entered (Default: 120 seconds). The Coordination Reset Time setting defines how

long the recloser will stay in the Sequence Coordination TCC curve before reverting to the

Initial Trip TCC curve. The range for the Coordination Reset Time setting is between

0.5 and 1000 seconds. See Figure 76. The Sequence Coordination TCC curve will use the

same Open Interval After Trip setting as the Initial Trip TCC curve.

Add/Remove a Test Operation

Remove a Test Operation. Click on the green Remove Last Test button at the bottom

of the screen to remove the last Test operation from the test sequence. See Figure 77.

Figure 77. The Remove Last Test button.

Figure 76. The Sequence Coordination settings.

Test operations can only be removed sequentially from the bottom up. For example,

Test 2 cannot be removed without first removing Test 3. The Test 3 settings can be

saved to the clipboard first by clicking on the Copy button located in the setting area for

Test 3. Otherwise, settings will be lost when the curve is removed. The function of the

Copy button is explained in the “Copy and Paste Feature” section on page 56.

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