VCL Products > Teleprotection

Teleprotection / Digital Tele Protection (DTPC) / Digital
Protection Signalling Equipment (PSE)

VCL-TP, Teleprotection / Digital Tele Protection Coupler (DTPC) / Digital Protection Signalling Equipment (PSE) is an extremely reliable and rugged, sub-station hardened equipment that is designed to operate very reliably even under the most demanding conditions and harsh environments. The VCL-TP, Teleprotection Equipment provides up to 8, 2-way independent “binary command” channels which can be operated selectively; or in a combination; or simultaneously over a diverse range of communication interfaces.

Substation interface options include:

8 Binary Commands
IEC-61850 GOOSE (PSCH1 and PSCH2)

Network / Transmission interface options include:

E1 (2.048Mbps)
1+1, E1 (2.048Mbps), point-to-point transmission links with path protection / route protectionwith automatic fail-over
E1 (2.048Mbps) transmission links transferring 4+4 Binary Commands over E1 links in a point-to-multipoint application (i.e. 4 BinaryCommandson E1 Link #Aand 4 BinaryCommandson E1 Link # B)
IEEE C37.94 Optical link
1+1 redundant, C37.94 Optical Interface, point-to-point transmission links with path protection / route protection with automatic failover protection
Ethernet / IP/MPLS / MPLS-TP (10/100BaseT RJ45; or 100BaseFX Optical) transmission link
E1 plus IEEE C37.94 Optical, 1+1 redundant transmission links with path protection / route protectionwith automatic fail-over
E1 + Ethernet / IP/MPLS / MPLS-TP (10/100BaseT RJ45; or 100BaseFX Optical) transmission link with path protection / route protection
E1 plus IEEE C37.94 Optical plus Ethernet / IP/MPLS / MPLS-TP (1+N redundant transmission) links
1+1 redundant, 2E1 + Ethernet / IP/MPLS / MPLS-TP (10/100BaseT RJ45; or 100BaseFX Optical) transmission link with path protection
IEEE C37.94 Optical plus Ethernet / IP/MPLS / MPLS-TP (1+1 redundant transmission) links.

Command Transfer Time (including relay operating time):

Interface Type	Command Transfer Time	Relay Operating Time	Total Command Transfer Time
E1 (2.048 Mbps)	< 2ms	< 3ms	< 5ms
E1 plus E1 (1+1 redundant)	< 2ms	< 3ms	< 5ms
IEEE C37.94 Optical	< 2ms	< 3ms	< 5ms
C37.94 plus C37.94 (1+1 redundant)	< 2ms	< 3ms	< 5ms
E1 (2.048Mbps) plus IEEE C37.94 (1+1)	< 2ms	< 3ms	< 5ms
Ethernet / IP/MPLS / MPLS-TP	< 2ms	< 3ms	< 5ms
E1 + Ethernet / IP/MPLS / MPLS-TP	< 2ms	< 3ms	< 5ms
E1 + IEEE C37.94 + Ethernet / IP/MPLS / MPLS-TP	< 2ms	< 3ms	< 5ms
IEC 61850 GOOSE Over Ethernet / IP/MPLS / MPLS-TP	< 3ms	< -	< 3ms
Binary Plus IEC-61850 GOOSE Interface over E1 / IEEE C37.94 / Ethernet / IP/MPLS / MPLS-TP	< 2ms	< 3ms	< 5ms

Summary Flyer (PDF)

VCL-TP, Teleprotection IEEE C37.94 Optical Fiber

8 Binary Commands over IEEE C37.94 Optical link.
Offers up to 8 independent Binary Command Input and 8 independent Binary Command Output channels which can be operated selectively; in a combination; or simultaneously over a IEEE C37.94 compliant optical fiber link.
Command Transfer Time (including relay operating time) is <5ms.
May be used independently in a point-to-point application between two nodes connected over an optical fiber link
Also optionally available with 2 x IEEE C37.94 Optical Interfaces for optical link redundancy; or for use in 4+4 point-to-multipoint applications

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VCL-TP, Teleprotection over E1, 2.048Mbps (SDH) Link

8 Binary Commands over E1, 2.048Mbps link
Offers up to 8 independent Binary Command Input and 8 independent Binary Command Output channels which can be operated over an E1, 2.048Mbps, G.703 interface option for transmission over E1/SDH links.
Command Transfer Time (including relay operating time) is <5ms
May be used independently in a point-to-point application between two nodes connected over E1/SDH links
Also optionally available with 2 x E1 Interfaces for E1 link redundancy; or for use in 4+4 point-to-multipoint applications

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E1 (2.048Mbps) plus IEEE C37.94 Optical (1+1 redundant transmission) links

8 Binary Commands over E1 plus IEEE C37.94 Optical, 1+1 redundant transmission links with path protection / route protection with automatic failover
Offers up 8 independent Binary Command Input and 8 independent Binary Command Output channels which can be operated selectively; or simultaneously; or in a combination over an E1 (2.048Mbps) plus IEEE C37.94 Optical (1+1 redundant transmission links) with link failure detection and automatic failover.
Command Transfer Time (including relay operating time) is <5ms
Network interface options:

E1, 2.048Mbps interface
IEEE C37.94 optical fiber interface

1+1 redundant path protection / route protection option

E1, 2.048Mbps and IEEE C37.94 (1+1 redundant) interfaces.

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E1 (2.048Mbps) plus E1 (2.048Mbps) - 1+1 redundant Interfaces

8 Binary Commands over E1 plus E1, 1+1 redundant interfaces with path protection / route protection with automatic failover
Offers up 8 independent Binary Command Input and 8 independent Binary Command Output channels which can be operated selectively; or simultaneously; or in a combination over an E1 (2.048Mbps) plus E1 (2.048Mbps) - 1+1 redundant transmission links with link failure detection and automatic failover.
Command Transfer Time (including relay operating time) is <5ms

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VCl-TP, Teleprotection over IP/MPLS

8 Binary Commands over IP/MPLS / MPLS-TP (10/100BaseT RJ45, or 100BaseFX Optical) Ethernet transmission links
VCL-TP, Teleprotection over IP / MPLS Equipment incorporates the same level of “reliability” and “dependability” that the users have come to expect of the IEEE C37.94 based communication interface. Additionally, the VCL-TP, Teleprotection over IP/MPLS Equipment provides un-paralleled security, speed as well as all the advantages of operating in a “Digital Sub-station” environment.
Offers up 8 independent Binary Command Input and 8 independent Binary Command Output channels
Available with:

10/100BaseT (Electrical) Interface to provide Teleprotection over IP/MPLS link.
100BaseFX (Optical) Ethernet Interface to provide Teleprotection over IP/MPLS link.

VCL-TP, E1, IEEE C37.94, IP/Ethernet Teleprotection with IEC-61850 GOOSE

8 Binary Commands and IEC-61850 GOOSE over E1; plus IEEE C37.94; plus Ethernet links
1+1 redundant protection switching / route protection is available between E1 interfaces / IEEE C37.94 optical / IP/Ethernet/MPLS with IEC 61850 GOOSE and automatic switchover to redundant link in the event of the failure of the primary link.
Command transfer time for Binary and IEC-61850 GOOSE Interface over E1 / IEEE C37.94 / Ethernet / IP/MPLS / MPLS-TP is <5ms

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VCL-TP Teleprotection IEC-61850 GOOSE over IP / MPLS Interface

IEC 61850 GOOSE (PSCH1 and PSCH2) over IP/MPLS / MPLS-TP (10/100BaseT RJ45, or 100BaseFX Optical) Ethernet links
Designed transport IEC-61850 GOOSE* (*Generic Object Oriented Substation Event) messages over an IP/MPLS network.
8 Binary Inputs / Outputs and performs GOOSE to Binary / Binary to GOOSE conversion functions, thereby allowing the users to install VCL-TP Teleprotection - IEC-61850 GOOSE over IP/MPLS equipment between sub-stations where one sub-station (protection relay) is using GOOSE messages and the corresponding, complementing sub-station (protection relay) at the other end is using binary commands.
VCL-TP Teleprotection - IEC-61850 GOOSE over IP/MPLS incorporates the same level of “reliability” and “dependability” that the users have come to expect of the IEEE C37.94 based communication interface. Additionally, the VCL-TP Teleprotection - IEC-61850 GOOSE over IP/MPLS provides un-paralleled security, speed as well as all the advantages of an IEC-61850 GOOSE based system operating in a “Digital Sub-station” environment.
Command Transfer Time (including relay operating time) is <5ms

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Ethernet plus IEEE C37.94 Optical (1+1 redundant Transmission) Links

VCL-TP, Teleprotection / Digital Tele Protection Coupler (DTPC) / Digital Protection Signalling Equipment (PSE) is an extremely reliable and rugged, sub-station hardened equipment
Designed to operate very reliably even under the most demanding conditions and harsh environments.
Provides up to 8, 2-way independent “binary command” channels which can be operated selectively; or in a combination; or simultaneously over a diverse range of communication interfaces.
May be used concurrently over IEEE C37.94 or over Ethernet / IP-MPLS / MPLS-TP links in 1+1 link protected mode to provide redundancy of transmission paths.

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Application Diagrams: