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4-Channel Turbo Serial-Over-IP


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Featuring support for teleprotection relays, the TC3847-3 Turbo Serial Card transports four channels of RS-232 or RS-422/ RS-485 serial data over existing Layer 2/Layer 3 networks at extremely low latency.

The JumboSwitch® series is a TDM over IP/Ethernet based solution designed to emulate time-division multiplexing over packet switched networks (PSN). TDM over IP/Ethernet is a TDM pseudowire (PW) technology making it possible to provision E1, T1, E3, T3, STS-1 and serial data services across PSN's such as IP, MPLS or layer 2 Ethernet Networks.

For assistance with this product or to request a user manual please contact Technical Support.


  • Supports four channels of RS232 or RS422/RS485 over Layer 2/3 networks
  • Less than 3ms. Extremely low latency for Teleprotection Relays
  • Protocol transparent: Mirrored Bits*, DNP-3, Modbus, etc.
  • RS-232 Ports Support Hardware Handshaking or Synchronous Mode
  • Data Rates up to 115kbps
  • VLAN & QoS Support
  • Temperature & Power Consumption Monitoring
  • Extreme Temp (-40°C to +80ºC)Optional
  • Meets or Exceeds IEC 61850-3, IEEE 1613 & NEMA TS-2 Standards
  • Member of JumboSwitch® Product Family
*NOTE - “Mirrored Bits®” is a registered trademark of Schweitzer Engineering Laboratories Inc.


Typical applications include extending serial data across IP networks.

For example, the TC3847-3 is often used to extend RS-232/RS-422/ RS- 485 signals from one protection relay to another across Layer 2/Layer 3 Networks.

Specially designed to meet stringent real time requirements for protective relay communications in the power utility industry, this Turbo Serial interface card can perform at less than 3msec. latency, end-to-end, through an Ethernet network. This extremely low latency is irrespective of the protocol used, mirror bit or otherwise, and is unaffected by the number of nodes in between. In short, it’s the fastest serial-over-IP solution for teleprotection currently available in the industrial marketplace today.

TC3847-3 - 4-Ch. Turbo Serial-Over-IP
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Data Rates
  1. RS-232Up to 115Kbps
  2. RS-422/RS-485Up to 115Kbps
  3. Ethernet10/100Mbps Full Duplex
  4. Console9.6K
Connection Capacity
  1. RS-232 or RS-422/RS-4854 Ports
  2. Ethernet1 Port
  1. RS-232 Interface
  2. ESD Protection+/-15KV HBM
  3. ConnectorRJ11F
  4. RS-422 Interface
  5. Termination (optional)100 Ohm
  6. ESD Protection+/-15KV HBM
  7. ConnectorRJ11
  8. RS-485 Interface
  9. Termination (optional)100 Ohm
  10. ESD Protection+/-15KV HBM
  11. ConnectorRJ11
  12. Ethernet Interface
  13. Termination (optional)IEEE 802.3, 802.3u, 802.1p&Q
  14. ConnectorRJ45
  15. Console PortRJ45
Regulatory Approval
  1. CE, FCC Part 15, CISPR, CLASS A, IEC, 61850-3, IEEE 1613, NEMA TS-2
  1. Bit Error Rate1 in 1010 or Better
Diagnostic Functions
  1. Local and Remote Loopback for Serial and Ethernet
  1. Unit StatusPWR (A, B), Alarm Vcc, BP, MGM>
  2. ChannelRx/Tx/Status
  3. EthernetLink/Act
  1. Standard12VDC
  2. Optional24VDC, -48VDC, 90-260VAC, 50/60Hz
  3. Power Consumption< 10W
Operating Temperature
  1. Hi-Temp-20°C to 70°C
  2. Extreme Temp-40°C to 80°C
  1. Temperature-40°C to 90°C
  2. Humidity95% non-condensing
Physical (4-Channel Standalone)
  1. Height(3.15 cm) 1.24"
  2. Width(17.78 cm) 7.0"
  3. Depth(22.86 cm) 9.0"
  4. Weight(0.3 kg) 0.75 lbs


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