1.3
Date Code 20081022 Instruction Manual SEL-787 Relay
Introduction and Specifications
Models, Options, and Accessories
➤ 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)
➤ Vo l t a g e O p t i o n
➢ 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
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 series RTD Module
➢ A simplex 62.5/125 µm fiber-optic cable with ST
connector for connecting the external RTD module to
the SEL-787
➤ SEL-787 Configurable Labels
➤ Rack-Mounting Kits
➢ For one relay
➢ For two relays
➢ For one relay and a test switch
➤ Wall-Mounting Kits
➤ Bezels for Retrofit
➤ Replacement Rear Connector Kit
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