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DLYa_PEREVODA_PS_Oktyabrskaya_en.docx
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    1. Requirements to Microprocessor Devices Regarding External Interface

Relay protection and special automatics devices shall have front side serial port with interface either RS232 or RS484 and Ethernet port for device configuration by means of a PC with appropriate communications protocol, as well as back side serial port with serial fiber optic or Ethernet interface for communication with substation`s automatic control system.

Devices shall have a port for precise time synchronization from GPS if necessary (synchronization error shall be less than 1ms).

Devices shall have a possibility of settings transmission, configuration, disturbance and event files reading through both front side and system serial ports.

Devices shall be able to support transmission of settings, configuration, disturbance files, oscillograms and sequence of events stored in the device, current measurements through the port for communication with substation's automatic control system as well as receiving the commands for internal time synchronization. Transmission of all the information indicated above shall be provided via IEC 61850 and one of the following communication protocols: IEC 870-5-103; IEC 870-5-101 (SPA, MODBUS, MODBUS TCP).

    1. Software Requirements

The supplied software shall be licensed.

All software (including microprocessor-based protection and automatics firmware) shall be of the final edition (at the time of delivery).

Service software supplied with microprocessor-based protection and automatics devices shall have the ability of settings changing, configuration, disturbances and events reading through the front side serial port and automatic saving of oscillograms in COMTRADE format.

All software (including microprocessor-based protection and automatics firmware) shall have an unauthorized access protection concerning the changes of settings, configuration and parameters.

The software for calibration and testing systems shall have full extended software packages, which provide automatic test of protection and special automatics devices.

    1. Requirements to Control Cables

Control cables, that are installed on a substation territory, should have copper, with a cross-section of at least 2,5 mm, shielded if required , self-extinguishing, with a spare cores.

Control cables should comply to GOST 1508-78 “Control cables with rubber and plastic insulation. Technical regulation”, GOST 26411-85 “Control cables. General specifications” and working documentation, approved in established order.

Acceptance tests, periodical tests, and standard testing should take place for conformance inspection of specific types of cables.

Packaging, labeling, transportation and storage of cables should conform to GOST 18690-82.

Copper current-carrying conductors should be solid stranded and conform to class 1 of GOST 22483-77.

Operating life of cables in case Employer implements all installation regulations, operating conditions and storage conditions should be at least 15 years, and if cables are to be installed in buildings, cable galleries, cable ways – 25 years.

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