ABB COM600 Series Operator's Manual page 22

Versatile substation automation and data management unit

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COM600 series 5.1

Operator's Manual

Figure 3.6.3-1 Switch Device Control dialog

If the IED supports interlocking and syncrocheck overriding, the check boxes for the

override selection are shown. When the check box is selected, the IED is requested to

execute the control command without the corresponding interlock or syncrocheck test.

Overriding of interlock and synchrocheck tests can be danger-

ous. Only use the override option, if you are sure that the

operation can be performed safely without the corresponding

tests.

Three-state switch

A Three-state switch combines two disconnectors into one visible symbol and control

dialog. One of the disconnectors is connected to earth, the other (main) to the switch

gear.

1MRS756705

switch_control.bmp

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