The 515 Blocking and Test Module provides an effective means of trip blocking, relay isolation and testing of Multilin relays.
By opening the switches and inserting test plugs,phase and residual currents from the pri-mary CTs can be monitored.
Currents can be injected into the relay from a secondary injection test set during commissioning.
Prior to withdrawal, the trip and auxiliary circuits must be opened first, to prevent nuisance tripping, and CT’s can then be shorted.
Conversely, when the test is done and the relay is put back in operation, the CT switches should be closed first to ensure normal operation of the relay, prior to clos-ing the trip and auxiliary circuits.

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in the previous tutorial we saw how to create a master/detail report using two web pages: a "master" web
page, from which we displayed the list of suppliers; and a "details" web page that listed those products
provided by the selected supplier. This two page report format can be condensed into one page. This tutorial
will have a GridView whose rows include the name and price of each product along with a Select button.
Clicking the Select button for a particular product will cause its full details to be displayed in a DetailsView
control on the same page.
Figure 1: Clicking the Select Button Displays the Product's Details
Step 1: Creating a Selectable GridView
Recall that in the two­page master/detail report that each master record included a hyperlink that, when
clicked, sent the user to the details page passing the clicked row's SupplierID value in the querystring. Such a
hyperlink was added to each GridView row using a HyperLinkField. For the single page master/details report,...