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Card Slot D: 8 Digital Inputs Card (8 DI)
Connect up to 8 digital inputs per application requirements to inputs IN_01 (terminals 01 and 02), IN_02 (terminals 03
and 04), . . ., IN_08 (terminals 15 and 16).
Card Slot E: Voltage Inputs Card
Connect 4-wire wye-connected PTs or open-delta connected PTs as shown in the typical connections diagram. For other
PT connection options refer to Section 2 of the SEL-751A manual.
Card Slot Z: Current Inputs Card
Connect phase current and neutral current inputs as shown in the typical connections diagram.
Step 1. Connect Phase A, Phase B, and Phase C current inputs to terminals 01 and 02; terminals 03 and 04; and
terminals 05 and 06, respectively, following the convention shown in the typical connections diagram.
Step 2. Connect neutral current IN inputs to terminals 07 and 08.
Connections
Courtesy of NationalSwitchgear.com
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