SEL-2506 Rack-Mount Remote I/O Module
The SEL-2506 Rack-Mount Remote I/O Module has eight digital inputs, eight digital outputs, and a fiber-optic communications port. Connect an SEL-2506 to a fiber-optic port or transceiver on a protective relay to add digital I/O. Or, wire the SEL-2506 I/O to relay I/O to add SEL Mirrored Bits® teleprotection.
- 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.
Fiber-Optic Port Options:
| Transceiver Compatibility |
Connectors |
Fiber |
Distance
(km) |
SEL Fiber-Optic Cable |
| SEL-2800 |
V-System |
Multi-Mode |
0 to 1/2 |
SEL-C805 |
| SEL-2815 |
ST® |
Multi-Mode |
2 to 15* |
SEL-C807,C808 |
| SEL-2830 |
ST |
Single-Mode |
16 to 80* |
SEL-C809 |
| SEL-2831 |
ST |
Single-Mode |
16 to 110* |
SEL-C809 |
* for distances below minimum use attenuators on Transmit fiber
Flyers
Instruction Manuals
Label Instruction
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