BKXGN-12-SIS3 medium-voltage switchgear

BKXGN-12-SIS3 solid insulated fully enclosed medium voltage switchgear; The full range of solutions includes circuit breaker line protection, transformer protection, load control, fuse combination electrical appliances, PT power supply, bus connection lifting, used transformers, etc., providing a series of solutions for power grid upgrading and distribution users, and configuring intelligent terminal base station combinations to meet the needs of smart grids. The product can be used as a power distribution equipment for the ring network of the power system, and can also be used as a power distribution equipment for the urban construction of industrial and mining enterprises, and has the characteristics of multi-functional versatility.

solid insulated fully enclosed switchgear; It is the use of solid insulation material as the main green medium, the vacuum interrupter and conductive connection, isolation switch, ground switch, main bus, branch bus and other leading electrical circuits are single or combined, and then wrapped with solid insulating medium into one or several modules with full insulation and full sealing performance with certain functions, which can be combined or expanded again. The surface of the module that can be touched by a person is coated with a conductive or semi-conductive shield and directly and reliably grounded, and the ring network cabinet is touchable, and the main loop module that can be touched by one person is equipped with a grounding net and coated with a conductive shield and directly and reliably grounded, which does not cause risks when performing ineffective maintenance, so that the user can be safe during operation and maintenance.

Three-station disconnect switch - there is no false break, the design of the disconnect switch in line with the standard of GB1985-2004, and adopts a special process structure.

The pole design of the circuit breaker - one adopts double-layer shielding technology.

The docking of circuit breakers, disconnect switches, and busbars all adopts online monitoring technology, and the new insulation sealing material - the alloy process of new insulation material epoxy resin + rubber particles + silica spherical particles + silicon strip particles + silicon micropowder is added to the shielding net.

The sealed insulated box of the three-station disconnect switch can be filled with dry air and pressurized by 0.04MPa to prevent internal intrusion of moisture from condensation, and is equipped with a pressure gauge to monitor the internal pressure online to prevent leakage and cause internal condensation caused by infiltrating moisture gas.

The medium pressure system is protected from harsh environments (pollution, corrosive gases, condensation, moisture, dust, etc.). Significantly reduced potential for arcing, longer expected service life, and reliable solid insulation technology in a variety of situations - no SF6 gas insulation, no greenhouse gases, and environmental protection.

Modular design - circuit breaker, three-station disconnect switch with grounding device, small size, compact structure, easy operation and maintenance.

A comprehensive series of solutions A combination of schemes is changeable, with two structures of upper and lower isolation to solve various user solutions.

Expansion and transformation - can be implemented in various changes in the field to combine expansion, and the 375 width design is a direct replacement for some SF6 products.

BK  X  G  N  □ - 12 / □  - □ 

                                        └──Rated Breaking Short Circuit Current (KA)

                                └────Rated current (A)

                          └─────── Rated Voltage (KV)

                     └────────── design serial number

            └──────────── Indoor installation

        └────────────── Solid insulation

    └──────────────── Metal armor

└─────────────────── enterprise code

Conditions of use

Ambient temperature: -45°C~+45°C

Humidity: Large average relative humidity, daily average s95%, monthly average ≤90%

Altitude: 4000 m

Seismic resistance: 8 degrees

Degree of protection: live body seal IP67, fuse barrel IP67, switchgear housing IP3X

◆High ambient temperature: +40°C;

◆Low ambient temperature: -45°C;

◆Altitude: 4000 m;

◆Average daily temperature: +35°C;

◆Average daily humidity: 95%;

◆Average humidity in the big moon: 90%:

◆ Major earthquake intensity: magnitude 8;

◆The switchgear should be installed in a place where there is no fire, no explosion hazard, and no violent vibration.

Usage Standards:

◆International standards

IEC62271-1-2007 High Voltage Switchgear and Control Equipment, Part I: General Specification

IEC62271-200-2003《1~52kV AC Metal Enclosed Switchgear and Control Equipment》

◆National standards:

GB3906-2006《3.6~40.5kV AC Metal Enclosed Switchgear and Control Equipment》

GB/T11022-1999 "Common Technical Conditions for High-Voltage Switchgear and Control Equipment Standards"

GB1984-2003 "High Voltage AC Circuit Breaker"

GB1985-2004 "High Voltage AC Disconnect Switch and Grounding Switch"

GB3804-2004《3.6Kv~40.5kV High Voltage AC Load Switch》

DL/T404-2007《3.6~40.5kV AC Metal Enclosed Switchgear and Control Equipment》

DL/T5932006 "Common Technical Conditions for High-Voltage Switchgear and Control Equipment Standards"

◆State Grid Corporation of China standards:

QVGDW730-2012 "Technical Conditions for 12kV Solid Insulated Ring Mesh Cabinet"

※ Lower isolation type

※Upper isolation type

■Technical parameters of switchgear

■Technical parameters of isolation grounding switch

■Circuit breaker technical parameters (V unit)

■Technical parameters of load switching (C unit)

■Technical parameters of load switch with fusing (C unit)