- Easy
Application
Protect two-terminal
transmission lines and subtransmission lines with the same ratio
CTs on each end. Apply a 64 Kb digital communications channel for
complete phase and ground fault protection with no settings.
- Simple
Installation
Connect single-mode optical fiber, 1300 and 1550 nm, for distances
up to 120 km without a repeater. No additional transceivers are required.
- Flexible
Communications
Apply the SEL-387L with a multiplexed communications system
using the built-in IEEE C37.94 compliant connection. Connect to
EIA-422 and G.703 multiplexers using the SEL-3094
Interface Converter.
- Low-Cost
Replacement of Obsolete Systems
Use the SEL-387L for complete protection of two-terminal lines.
Save money with low equipment costs and no settings costs. Replace error-prone
pilot-wire relays with a sensitive and secure fiber-optic line current differential
relay. Use the built-in communications monitoring and alarm system to improve
protection quality.
- ACSELERATOR Software
Helps speed relay application by allowing you to develop relay settings off-line, program SELOGIC Control Equations, and analyze post-fault event reports.
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- IEEE C37.94
compliant multimode fiber-optic interface
- 1300 nm multimode
or single-mode interface
- 1550 nm single-mode
fiber-optic interface
- Simple
Application
The differential operating system of the SEL-387L requires no settings. Configure
the transmit and receive address, and the SEL-387L is ready to protect transmission
lines and cables of any voltage.
| SEL provides options to help you efficiently and safely commission and test these relays. |
 |
Streamline commissioning by using the SEL-4391 Data Courier™ to send and retrieve settings, gather event reports, and install enhancements. |
Budgetary
Retail, Quantity 1: $2,940
(Prices
displayed are for planning purposes and are subject to change. Contact
your SEL sales representative today
for a quote on configurations and quantities to meet your needs.)
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