Technical Specification for - Gujarat Electricity Board

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TECHNICAL SPECIFICATION FOR SDH/PDH Equipment with integrated Access Multiplexer Preventive and problem oriented maintenance of the communications system shall be performed using diagnostics tools such as NMS and test equipments (Optical power meter, communication analyser etc.). They shall support complete maintenance of all system elements and shall permit the diagnosis of any without requiring additional test equipment. The Contractor shall provide specialized training required to operate above mentioned diagnostic tools. For all redundant systems, disconnection and repair of any failed device shall not interrupt the operation of the system. 2.2.3.3 System Upgradability and Expandability Equipment supplied shall be sized (though not necessarily equipped) to support system expansion to full capacity specified at clause No. 2.2.5.5 of TS. Power supplies and NMS shall be sized for maximum equipped system capacity. 2.2.3.4 Equipment Availability The availability requirements is categorised in two parts. The Contractor shall ensure the availability for subscriber to subscriber where they will have to provide the new equipments (MUX/Drop-Insert) under this contract. The availability requirements are as follows, which shall be demonstrated at site for the equipments being provided under this contract: A. New nodes with requirement of both SDH STM-1 ADM equipment (1) The average per link subscriber to subscriber availability shall be at least 99.97%. The average per link subscriber to subscriber availability is defined as the availability between any two data or voice subscribers/Teleprotection channel. (2) The network-wide subscriber to subscriber availability shall be at least 99.8% .The network-wide subscriber to subscriber availability is defined as the availability between any two data or voice subscribers/Teleprotection channel on the wideband network. The calculated availability is defined as the theoretical availability determined by a statistical calculation based on the mean-time-between-failure (MTBF) and the meantime-to-repair (MTTR) of the components and modules comprising the FOTE. The down time of the fibre optic cable shall not be considered in the aforesaid availability calculations. In order to ensure that the equipment & configuration proposed by the bidders shall be capable of demonstrating the specified availability figures, it is required that the Bidders shall include in their proposal a calculated availability analysis for the proposed equipment. The calculated failure rates of the units and the calculated availabilities of the equipment being offered shall be provided in the proposal. The analysis shall be based on an availability block diagram and shall include the mean-time-between failure (MTBF) and mean-time-to-repair (MTTR) of all of the components on the link. The Contractor shall indicate in the analysis the MTBF and MTTR and the resulting availability of each point-to-point link. For this analysis, an MTTR of at least 4 hours shall be assumed. Sign & Seal of Bidder GETCO/E/TS-SDH/PDH FOTE/R1, Dt:16.04.2011 Page 8 of 60
TECHNICAL SPECIFICATION FOR SDH/PDH Equipment with integrated Access Multiplexer 2.2.4 Fibre Optics terminal Equipment The Fibre Optic Terminal Equipment (FOTE) for communication System is defined herein to include ETSI digital optical line termination equipment. The FOTE shall be based on SDH technology. Minimum aggregate bit rate shall be STM-1. The Contractor shall provide (supply and install) connectorised jumpers (patch cords) for FODP-to-equipment connection. Two number spare jumpers shall be provided for each equipment connection. Fibre jumpers shall be of sufficient lengths as to provide at least 0.5m of service loop when connected for their intended purpose. 2.2.4.1 General requirements The digital multiplex equipment shall be designed to operate in electrical high-voltage networks and shall be suitable for installations in substations with harsh environment and high electromagnetic interference. It shall be highly reliable and provide secure communications for real time signals such as voice, SCADA, teleprotection, data including IP/Ethernet and status/control signals. The equipment offered shall already be working successfully in telecommunication networks operated by power utilities. It shall comply with the latest ITU-T recommendations and ETSI standards and be able to be interconnected with legacy multiplex and other telecommunication equipment. On TRANSPORT LEVEL interfaces for optical transmission on PDH 8Mbit/s, STM-1 155Mbit/s and STM-4 622Mbit/s shall be available. Additionally 2Mbit/s x DSL (HDSL or SDHSL) interfaces shall be available for connection to copper cables. For connection to higher order transport equipment also N x 2Mbit/s and STM-1 electrical interfaces shall be available. The equipment shall be software controlled, of modular design and all modules shall form an integrated part of a 19” shelf. The expandability for requirement to be supported by offered equipment shall be obtained by just inserting the cards in access multiplexer. The platform shall have means to cross-connect, drop and insert individual channels (64kbit/s time slots), 2Mbit/s framed (G.704) and unframed (G.703) signals. It shall also support termination and cross connection of VC 12, VC-3 and VC-4. Equipment protection and various protection schemes shall be supported. For stations with teleprotection and telecommunication requirements an integrated teleprotection function (distance and differential protection) has to be provided. The interface for command (4 independent commands per interface for sending/receiving signals with operation of distance protection scheme of transmission line) transmission & reception shall be supported by offered system and same shall be obtained by just inserting modular interface card in the slots available in 19” rack arrangement of the main SDH (STM-1 ADM) system. The protection signal interconnectivity for transit operations of command transmit/receive from different direction shall also be supported in stations, where existing equipments have to be extended. Each network element shall be manageable locally and also from an operation centre. There shall be the means available to supervise external/existing equipment via binary Sign & Seal of Bidder GETCO/E/TS-SDH/PDH FOTE/R1, Dt:16.04.2011 Page 9 of 60
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TECHNICAL SPECIFICATION FOR SDH/PDH
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Technical Specification for - Gujarat Electricity Board

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