PCM30U-OCH

System family for teleprotection and communication solution in power networks

Through its product PCM30U-OCH, TTC focuses on the construction and maintenance of network infrastructure, where in compliance with specific requirements on transmission in power networks, they play the key role of the communication system and system for long distance transmission of commands and signals of protective devices. The specific requirements for system functionality in the power networks environment, communications between EHV (extra high-voltage) lines protection with an binary command or digital interface (C37.94) and 50 Hz unique signal transmission.

Key features Various constructions for project optimization

Telecommunication services (voice, data, Ethernet)

Teleprotection services (Binary commands, digital interface - C37.94)

Transmission universality (SDH, PDH, IP/Ethernet, optical fiber, data)

Excellent transmission and reliability parameters for teleprotection

SNMP based and IP access management

Back up possibility (modules, lines, path)

Enhanced EMC immunity and low emission

Continuous access to sources of electricity and a functioning transport infrastructure is one of the important preconditions for successful economic and social development of the country. Since power systems are among the most important components of State critical infrastructure, high investments are required to ensure its reliable operation and protection.

PCM30U-OCH

Construction types

6U / 19″ - “all in one solution” Offers maximal universality and complex solution with up to 80 commands capacity. Transmission via E1, E2, STM1/4, optical fibers SM/MM, IP / FE or serial data

3U / 19″ - “economy solution” Offers cost and space savings in the less complex applications. Transmission of 20 commands via E1, E2, optical fibers SM/MM, IP / FE or serial data

1U / 19″ - “specific solution” Offers cost and space saving if only specified services (i.e. teleprotection or voice/data or special) are required. For teleprotection transmission of 10 commands via E1, for voice/data all compatible services, optical fibers SM/MM, IP / FE or serial data

BOX - “terminal application” Offers end user services with possibilities TDM or IP. Main applications are for transmission RTU (serial data/voice, Ethernet IP L2/L3/VLAN services) to the central nodes via IP, TDM or hybrid network.

Key Benefits

Superior operating efficiency and reliability PCM30U-OCH solution enables optimization of the cost for individual functional variants and their deployment in networks compliant with specific needs of the customer More than 25 years experience as evidenced by the most prestigious with installations in more than 18 countries in Europe, Asia and Africa. Individual customer support includes the development and adaptation of the system functionality to the existing facilities and customer needs. Full compatibility with analog and digital protection systems of third parties provides networking for optical interfaces of differential protection systems ABB, SEL, SIEMENS. Protecting future investments is ensured by the open modularity of PCM30U-OCH system, while the technology development and the need to concentrate a wide range of services do not limit further development of customer’s network to one supplier. Other merits include fast and reliable command transmission remote or central administration of supported network elements, the possibility to back up the system even at the level of channels, enhanced EMC immunity and low emission.

PCM30U-OCH

Applications

Multifunction use solution (services or transport means)

Backup possibilities

Network topology possibilities

Types

Line signal protection (the cheapest solution, 50ms switching time)

Tributary signal protection (dual mux in one subrack, 5ms switching time)

Double system protection (high reliability, used for connection power station – substation)

Integrated crossconnect

SDH level (VC12, VC3, VC4, concatenated VCx)

PDH level (64kbit/s granularity)

Universal flexible system for various

services and transport means

PCM30U-OCH

Technical specifications Line Interfaces

SDH SFP STM-4/ STM-1

Wavelength 820 /1310 /1550 nm WDM 1310/1550 nm (1 fiber)

Distance up to 180 km

Synchronization internal, STM, E1

Protection SNCP, MSP, ring

Tributary interfaces

E1 N x 12 E1 (Nmax = 2x28)

Eth N x 10/100/1G (Nmax = 4)

N x 1G (SFP) (Nmax = 4)

PDH E1

Signalization CAS

Frame composition G.703, G704

Performance monitoring

G.706 (CRC-4)

Line code G.703, HDB3

Impedance 120

Synchronization internal, E1, external, T12

Ethernet E1 over IP

Eth 10 / 100

Sync internal, E1, T12

Encapsulation AAL1, CESoPSN.

Framing unstruct, struct Nx64 / CAS,

Tributary interface

E1 external / internal

Optical Optical interface SFP modules

Wavelength 820 /1310 /1550 nm WDM 1310/1550 nm (1 fiber)

Distance up to 180 km

Teleprotection Interfaces

Commands Nominal voltage 220, 110 VDC

Input treshold 158-170 / 79-85 VDC

Input current 20 – 25 mA

Output switch. current 2 (4) A DC

Channels per module 10 / 4

transmission time 1 – 9 ms

Digital teleprotection general IEE C37.94

ABB REL551, RED670

Siemens 7SD5111, 7SD512 7SD523, 7SD61

SEL SEL311L

Wavelength 820 nm / 1310 nm

2 w 50/60 Hz (DZL-2) Nominal voltage 60 V RMS

4 w 50/60 Hz Input voltage 57,7 / 100 V RMS

Output voltage

(2kload)

27 – 50 / 54 – 100

Voice and Data Interfaces

Data

Data channel interfaces RS232/V.28, RS422/V.11, RS485-4w, RS485-2w, V.35, V.36, RS449,RS530, Optical 820 nm

Types and bit rates Sync. or async. up to 64 kbps, Nx64 kbps, N = 2, 4, 8

Ethernet L1 N x 64 kbps, N = 1 to 30 N x VC12, Nx VC3

Codirectional 64 kbps G.703

Voice FXO

FXS (CB / LB)

coding G.711 / A law

max. loop impedance 1400

4w / 2w with E&M

ISDN remote S0

FXS, 4w with galvanic separation,

Management, Ethernet L2

Management Local Windows oriented, IP access

Network SNMP IEC 60870-5-104

Central TopoNet (HP, LINUX oriented)

Server backup, NBI interface, workstations Windows, IP access

Ethernet L2 N x 64 kbps, N = 1 to 30 N x VC12, Nx VC3

10 / 100 / 1000

L2 switch

routing

point – point

point - multipoint