
- Protection and Monitoring
Add simple bus protection using contact inputs and outputs from existing relays. Add secure pilot communications to existing two- and three-terminal line applications. Add local or remote trip and close coil monitoring capability.
- User-Configurable Labels
Allow clear indication of system function and status.
- Integration
Expand the I/O of SEL relays that are MIRRORED BITS compatible.
- Flexible Fiber-Optic Communications
Built-in bidirectional fiber-optic port. Ordering options provide operating ranges from 500 meters to 110 kilometers, and compatibility with a variety of SEL fiber-optic transceivers and fiber types (see table 1).
- Safety
Replace control wiring to outside cabinets with fiber-optic cable to eliminate paths for dangerous voltages. All I/O terminals are behind the panel.
- Dependability
Use the communication monitoring feature to alarm when fiber-optic control cabling has been damaged, disturbed, or altered. Fiber-optic links are far less susceptible to electrical interference.
- Easy Installation and Service
Install rack-mount, compact two rack-unit chassis. Screw-terminal connectorized (STC) blocks for easy replacement of unit.
|

- Inexpensively extend contact I/O on SEL relays that are MIRRORED BITS communications compatible
- Add MIRRORED BITS communications to any protective relay (numeric or electromechanical) or other IED.
- Connect two SEL-2506s together to share digital contact I/O information between any two IEDs.
- Monitor data channel integrity to increase protection scheme or I/O security above that of traditional systems.
- Create simple bus protection using existing line relay contact I/O and the SEL-2506.
| Connector |
Optical Fiber |
Compatible Transceiver |
Maximum Recommended Distance (km) |
| V-System |
200 µm multi-mode |
SEL-2800 |
1/2 |
| ST |
50, 62.5, or 200 µm multi-mode |
SEL-2815 |
15 |
| ST |
9, 10 µm single-mode |
SEL-2829 |
23 |
| ST |
9, 10 µm single-mode |
SEL-2830 |
80 |
| ST |
9, 10 µm single-mode |
SEL-2831 |
110 |
Table 1 - Flexible Fiber-Optic Options

Budgetary Retail, Quantity 1: $990
(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.)

|