Sel SEL-787 - Table 2.4 6 ACI Current Card Inputs Terminal Designation

2.6
SEL-787 Relay Instruction Manual Date Code 20150130
Installation
I/O Configuration
➤ SEL Fast Message Unsolicited Write
➤ SEL Settings File Transfer
➤ SEL MIRRORED BITS (MBA, MBB, MB8A, MB8B, MBTB,
MBTA)
➤ Event Messenger
➤ DNP3 Slave Level 2
➤ C37.118 (Synchrophasor Data)
Current Card (6 ACI)
Supported in Slot Z only, this card provides Winding 1 and Winding 2 current
inputs for three-phase CTs. With this card installed, the SEL-787 samples the
currents 16 times per cycle. You can order the following secondary current
ratings:
➤ 1 A Winding 1, 1 A Winding 2
➤ 1 A Winding 1, 5 A Winding 2
➤ 5 A Winding 1, 5 A Winding 2
Current/Voltage Card
(1 ACI/3 AVI or 1 ACI)
Supported in Slot E only, order this card option when you have either single-
or three-phase (wye or delta) PTs and/or neutral ac current input (1 A or 5 A
nominal). With this card installed, the SEL-787 samples the voltages and/or
current 16 times a cycle—see Processing Specifications and Oscillography on
page 1.12 for more information. The pin connections remain the same for the
1 ACI card, which only supports the neutral current input.
Table 2.4 6 ACI Current Card Inputs Terminal Designation
Side-Panel
Connections Label
Term i nal
Number
Description
Z01, Z02 IAW1, Phase A Winding 1 current input
Z03, Z04 IBW1, Phase B Winding 1 current input
Z05, Z06 ICW1, Phase C Winding 1 current input
Z07, Z08 IAW2, Phase A Winding 2 current input
Z09, Z10 IBW2, Phase B Winding 2 current input
Z11, Z12 ICW2, Phase C Winding 2 current input
WARNING
Before working on a CT circuit, first
apply a short to the secondary
winding of the CT.
WARNING
Before working on a CT circuit, first
apply a short to the secondary
winding of the CT.