1.3
Date Code 20150130 Instruction Manual SEL-787 Relay
Introduction and Specifications
Models, Options, and Accessories
➤ Processor and communications card (Slot B)
➢ EIA-232 serial port with IRIG-B time code input
➢ Multimode (ST
®
) fiber-optic serial port (SEL-2812
compatible)
➢ EIA-485 serial port with external IRIG-B time code
input (terminals B01, B02)
➤ Six ac current inputs card (Slot Z)
➤ Power supply card with two digital inputs and three digital
outputs (Slot A)
➤ Three expansion slots for optional cards (Slots C, D, E)
➤ Protocols
➢ Modbus RTU
➢ SEL ASCII and Compressed ASCII
➢ SEL Fast Meter, Fast Operate, Fast SER, Fast Message
➢ Ymodem File Transfer
➢ SEL MIRRORED BITS
➢ Event Messenger
®
➢ Synchrophasors with C37.118
Options
➤ Neutral AC Current Option (1 A or 5 A neutral)
➤ Voltage Option
➢ Four-wire wye
➢ Open-delta
➢ Single phase connected
➤ Input/Output (I/O) Option
➢ Additional digital I/O
➢ Additional analog I/O
➢ 10 RTD inputs
➤ Communications Options (Protocol/Ports)
➢ EIA-485/EIA-232/Ethernet ports (single/dual copper
or fiber-optic)
➢ Modbus TCP/IP
➢ DeviceNet
➢ IEC 61850 Communications
➢ DNP3 serial and LAN/WAN
➢ Simple Network Time Protocol (SNTP)
Accessories
Contact your Technical Service Center or the SEL factory for additional detail
and ordering information for the following accessories:
➤ External RTD protection
➢ SEL-2600 RTD Module (with ST option only)
➢ A simplex 62.5/125 µm fiber-optic cable with ST
connector for connecting the external RTD module to
the SEL-787
➤ Remote I/O with SEL-2505 Remote I/O Module (SEL-2812
compatible ST option only)
To Next Page
