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KSO-298-6, 10 kV
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KSO-298-6, 10 kV

Article 002
Manufacturer: Electrolaboratory ELPEK
Online application

Prefabricated one-way service chambers of the KSO-298 series are designed for receiving and distributing three-phase alternating current electricity, frequency 50 Hz, voltage 6 and 10 kV in networks with an isolated neutral or grounded through an arc suppression reactor. KSO cameras are manufactured according to the technical specifications and customer questionnaire.

Advantages

  • The safe operation of the CSO is ensured by a system of mechanical and electromagnetic interlocks in accordance with the requirements of GOST and PUE
  • Separate insulated low-voltage compartment with a metal cable duct for laying inter-chamber harnesses
  • Secondary switching circuits laid in metal cable ducts ensure their protection and high noise immunity
  • Observation windows and LED lighting, which do not require replacement during the entire service life, provide the ability to visually monitor the interior space
  • A wide range of schemes allows you to choose the most suitable technical solution
  • The use of reliable power switches from various manufacturers provides flexibility in making a more profitable technical and economic solution
Specifications
Parameter name Meaning
Rated voltage, kV 6 10
Highest operating voltage, kV 7.2 12
Rated current, A Main chains of CSR 630, 1000
Busbars 630, 1000
Fuses no more than 250
Power circuit breakers 630, 1000
Disconnectors 630, 1000
Load break switches 630
AC frequency of main and auxiliary circuits, Hz 50±1.25
Rated primary current of current transformers, A 50; 75; 100; 150; 200; 300; 400; 600; 800; 1000
Rated disconnecting current of power circuit breaker, kA, not less 20
Thermal resistance current of the main circuit with a

flow duration of 3s, kA		 20
Rated current of electrodynamic resistance of the main ones, kA, not less 51; 64; 81; 102
Electrodynamic resistance current of the main circuit, kA 51
Thermal resistance current of the grounding circuit with a flow duration of 1 s, kA 20
Electrodynamic resistance current of the grounding circuit, kA 51
Rated voltage of secondary circuits, V operative current 110, 220
voltage transformer circuits 100
lighting circuits inside cameras 24, 36, 48
auxiliary transformer circuits 220, 380
Standard for testing the insulation of control circuits and auxiliary circuits with a one-minute voltage of frequency 50 Hz, kV 2
Standards for testing the insulation of main current-carrying circuits with a one-minute voltage of 50 Hz, kV relative to the ground 32 42
between contacts of power switches and load switches 32 42
between contacts of disconnectors and fuses 37 48
Electrical insulation resistance main current-carrying circuits, MOhm, not less 1000
secondary circuits, MOhm, not less 1
Resource for mechanical resistance (number of cycles B–tp.–O) power switches, not less 25000
load switches and disconnectors, not less 2000
grounding disconnectors 2000
Switching resource (number of cycles B–tp.–O) power circuit breakers, with a shutdown current of 20 kA, not less 100
load switches, with a breaking current of 630 A, not less 100
Own time of switching on power switches no more than, s 0.1
Own shutdown time, s, no more power circuit breakers 0.04
load switches with tripping solenoid 0.1
Service life before write-off, years, not less 25
Degree of protection according to GOST 14254 IP30
Design
  • The KSO-298 frame is a metal structure made of galvanized steel 2 mm thick. Welded metal structure parts are manufactured using high-precision equipment using cold stamping. External structural elements — doors, side panels, etc. powder coated.
  • The KSO-298 chamber consists of the following functional compartments, separated by metal partitions:
    — busbar compartment;
    — high-voltage switch compartment;
    — cable connection compartment;
    — relay protection and automation compartment;
  • The busbar compartment is located in the upper part of KSO-298 and has continuous fences with an inspection window from the facade. Busbars are sections of aluminum busbars of rectangular cross-section, located parallel to the frontal plane of the KSO cabinet. Depending on the KSO-298 type, busbars are attached directly to the disconnector terminals, or to support or bushing insulators. Busbars of adjacent cells are connected to each other using bolted connections.
  • The high-voltage compartment is located directly below the busbar compartment. The high-voltage compartment contains equipment for the main circuits (depending on the circuit number) — vacuum power switches, measuring current transformers, fuses. The compartment on the front side is closed with lining. Depending on the main circuit diagram, the following devices can be installed in the KSO-298 «INVEL» chambers:
    — vacuum switches BB/TEL-10 with a rated current of 1000 A;
    — load switches VNA, VNR, VNVR with a rated current of 630 A;
    — RVZ disconnectors for rated current 630, 1000 A;
    — ground electrodes ZR-10;
    — current transformers TLP-10;
    — voltage transformers ZNOL, ZNOLP, NAMIT;
    — auxiliary transformers TSKS-40;
    — fuses such as PKT, PKN, PNO;
    — relay protection of any manufacturer;
    — overvoltage limiters such as OPNp-6(10), OPN-RT/TEL-6(10).
  • The cable connection compartment contains equipment for the main circuits (depending on the circuit number) — disconnectors, resistive surge suppressors, etc. It also serves to connect the main circuits of neighboring cells through bushing insulators. For access to the equipment of the main current-carrying circuits, the cable compartment has a door. For easy viewing of the internal space, a lamp with an LED lamp or an LED lamp is installed on the inside of the door, and there is also an observation window on the door.
  • The relay protection and automation compartment is located in the middle front part of the cell and is designed as a compartment separated from the high-voltage equipment by a removable metal partition. On the door of the relay protection compartment there are:
    — keys and control buttons;
    — signal lamps for switch status, malfunction and protection activation;
    — microprocessor relay protection unit;
    — electrical measuring instruments;
    — metering devices.
  • KSO-298 cabinets have a grounding loop to which all housings of devices and devices that are subject to grounding are connected. The door is connected to the ground loop by a wire. There is a grounding bolt at the bottom of each cabinet for connection to an external ground loop. The grounding bolt is marked with a special marking. Grounding of busbars can be carried out in a chamber with a voltage transformer or in a separate chamber.
  • Prefabricated one-way service chambers have a service life of at least 30 years, which helps to increase the high reliability and service life of the equipment used, the quality of the design and the modern production process. The housing of complete switchgears KSO-298 is made of galvanized sheet steel by riveting and without welded joints, which ensures the absence of corrosion and the need for painting.
Documents for download

RE KSO-298

Manual

Questionnaire for KSO-298

Questionnaire

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