5. Shield of direct-current 220 V

A shield of direct-current (SDC) must be twosectional.

In the normal mode the feed of SDC must be carried out from rectifier charge– subcharge device. On every section it must be it charge is a subcharge device.

In malfunction the feed of SDC must be carried out from a storage battery (SB). Nominal tension of battery 220 V. Tip and capacity of SB will be certain a project. For the subcharge of end elements of SB there must be a separate subcharge device.

An input of feed from a storage battery must be with a circuit protective breaker.

Feed from charge – subcharge device executed through a circuit protective breaker.

Every section of SDC must have closets of outgoing lines. Outgoing lines are on the defensive circuit breakers.

Circuit breakers of input of SB and input charge – subcharge device must have remote and local control.

The circuit breakers of outgoing lines can also have remote and local control.

Climatic execution and category of placing of UKHl4 for GOST 15150-89 and GOST of 15543.1-89.Stepeni defence of Ip40 on IEC 529 (GOST 14254-80).

A shield must be equipped all wiring, terminals, alarm relays, by lamps et al needed by accessories.

The electric editing must not hinder access to the removable and managed elements for examination, verification and their replacement.

All wires and apparatus must have marking, proper indicated on an of principle chart and chart of connections.

Contacts and all belongings of current-carrying chains must be protected from a casual touch in obedience to the standard of safety.

A shield must be equipped the elements of the controlled from distance control and management, and also inspector for a management circuit breakers, for control of electric parameters of shield with possibility of reception and delivery of discrete signals and information in the system to ACS.

A shield must be equipped the device of control of isolation of chains and determination of the damaged area.

Possibility of delivery of signals must be foreseen about the state of circuit breakers in the system to ACS.

In the complete set of supplying with a shield must enter:

• closets with the internal editing of all necessary elements.

• standard complete set of spare parts, recommended a factory-manufacturer;

• operating document on Ukrainian / Russian.

Other parameters, required Customer, are indicated in "Table of technical requirements".

6. Cables and cable trays

Gasket of power and control cables (on territory of substation executed in the cable ducting’s and partly on routes with the two-bit of cables - in cable concrete trays. For the exception of influence of the electromagnetic fields on control cables from power cables, it is necessary to execute the gasket of power and control cables on separate routes in the distance one from another. For the gasket of control and power cables between panels the cable ducting s are projected in building of SCH and further comfortable exploitation . Control and power cables must be noncombustible.

To execute the gasket of cables taking into account the requirements of gl.2.3 PUE: 2009.

The volume of delivery, piling and connecting of cables must include, but to be not limited following:

• all necessary cables and wires for providing, measuring transformers, management, measuring, signaling and t.p electric power.

• all necessary containing a number tallies for determination of cable (numeration will be certain in a project);

• all necessary timber wares;

• all necessary fire-protective materials for the isolation of the cable openings;

• all necessary materials for the gasket of cables in earth;

• all necessary cable connections, including cable tips, timber and clamping materials and t.p.;

• all necessary impermeable end muffs and cable connecting muffs, including dunnages;

• all necessary pressed connections;

• all necessary cable stuffing-boxes.