Complete switchgears of K-01E series

Switchgears of K-01E series are applied as complete switchgears of 6-10 kV, including switchgears of transformer substations for electric networks of industry, agriculture, power plants and railway transportation electrification.

The device meets the requirements of Technical Conditions 3414-042-32574607-2004.

The certificate of conformity № РОСС RU.ME25. B01203.

The example of symbolic notation of the switchgear with the main circuit diagram №11, with overvoltage suppressors, with vacuum circuit-breaker VBM-10-20/1000 with electromagnetic drive, with arrangement of phases of buses at front elevation АВС, rated current 630 A, thermal current 20 kА, climatic modification UHL, category of installation 3.1:

K-01E-11А 1-630/20 UHL3.1

The example of symbolic notation of  switchgear with the main circuit diagram №01, with overvoltage suppressors, with vacuum circuit-breaker VD4 with electromagnetic drive, with arrangement of phases of buses at front elevation АВС, rated current 2500 A, thermal current 31,5 kА, climatic modification UHL, category of  installation 3.1:

K-01E-01А 5-2500/31, 5 UHL3.1

Operation conditions

К-01E switchgear panels are intended for indoor operation (climatic modification UHL3.1 in accordance with GOST 15150-69) under the following conditions:

Design and action

Switchgear panels, depending on the diagram of the main and auxiliary circuits, have different functions:

К-01E switchgear panels provide convenience of examination, repair and dismantling of primary components during operation without voltage removal of collecting buses and the adjacent connections.

K-01E panels of all modification types represent metal housing, welded of the bent sections. Apparatus and devices according to the main and auxiliary circuit diagrams are installed inside.

K-01E panel consists of three basic parts: housing, drawout unit and relay cabinet. The panel is divided by walls and closing shutters into three compartments: high-voltage, cable incoming and collecting buses. Drawout unit represents a welded structure on which the high-voltage devices, according to the main circuit diagram, and contact system are installed.

The complete K-01E switchgears are delivered as separate metal cabinets with elements for joining them. At the request of the customer switchgears are delivered by transport blocks of up to three cabinets in the block with the connections of the main and auxiliary circuits mounted within the block.

The complete K-01E switchgears are designed for front and rear side access.

In order to prevent erroneous operations there are the following interlocks in the panels:

Note - For realization of other kinds of interlocks (operative, safety, etc.) it is possible to install safety locks.

In K-01E switchgears there is high-speed arc protection made with the use of overpressure unloading valves in combination with sensitive relays of arc protection of PD-02 or OVOD-M types. The control of overpressure unloading valves position is done with limit switches.

Circuits of secondary switching of K-01E panel are placed in the relay cabinet. The relay cabinet represents a welded metal strucure. Low-voltage components of auxiliary circuits are mounted either on the rear wall, or on the rotary panel inside the relay cabinet. Secondary circuits diagrams are realized through a range of typical schemes using electromechanical relays, and also with the use of microprocessor relay protection devices of various manufacturers (of "Temp", "SEPAM", BMRZ, "Sirius" series and others).

Safe work in a drawout unit compartment is provided by protective shutters which are automatically closed when the drawout unit is moved out from service position to testing position, thus blocking access to fixed contacts under voltage.

In the closed position it is possible to lock the shutters in the lower part of the compartment.

On the unit frame there are brackets, which operate the shutter mechanism, when the unit is moved in or out.

Busbar bridges are a metal structure, collected of two frames with isolators, buses and busbar carriers installed on them (ЭПСЗ.685515.001-Ш, ЭПС3.685515.001-ШР). If the passage width in the switchgear is 4200 mm, an insert frame is installed between the frames.

Busbar bridges are produced without disconnectors. Drives of these disconnectors are placed on the planes 200 mm wide, fixed between two end panels in the switchgears row (on the right or on the left).

Features

• Compactness.
• Versatility - possibility of application together with complete switchgears of other plants.
• Convenience and safety of service.
• Simple and reliable mechanism of opening and closing protective textolite shutters.
• Availability of mechanical and electromechanical interlocks.
• Application of modern technologies in production that allows reproducibility of each product.
• Application of modern component materials that allows upgrading service performance of the product.
• Maintainability - application of metal housing demountable structure.
• Application of modern vacuum circuit-breakers: BB/TEL («Taurida Electric»), VBM, VBEK (Saratov), VVE-M (Minusinsk), VD4 (ABB).
• Application of microprocessor devices RZ and A of Russian or foreign manufacturers.