I. Overview:

The HXGN15-12 modular sulfur hexafluoride ring main unit is suitable for AC 50HZ, 12kV power systems. Widely used in industrial and civilian cable ring networks and power supply terminals.

II. Main purpose

-- The HXGN15-12 modular sulfur hexafluoride ring main unit is suitable for AC 50HZ, 12kV power systems. Widely used in industrial and civilian cable ring networks and power supply terminals.

-- Specially suitable for the following places: small secondary substations, switch stations, urban residential area power distribution, industrial and mining enterprises, shopping malls, airports, subways, wind power generation, hospitals, sports venues, railways, etc.

III. Normal usage conditions

-- Altitude: ≤ 1000m. (If there are special requirements, please specify them when ordering. Currently, there are 6 groups operating at an altitude of 5200m.)

-- Environmental temperature: -35 ° C+45 ° C, maximum daily average temperature difference ≤ 25 ° C.

-- The average daily relative humidity should not exceed 95%, and the average monthly relative humidity should not exceed 90%.

-- Seismic resistance: 8 degrees.

-- Places with severe vibrations and impacts, as well as no fire, chemical corrosion, or explosion hazards.

IV. Execution standard

IEC298    IEC265   IEC129  IEC694   IEC420    IEC56

IEC529   IEC932   Gb3804   Gb3906    GB11022

V. Cabinet Structure

-- The ring main unit cabinet is formed by riveting 2mm thick aluminum-zinc-coated plates (or cold-rolled plates after powder coating). There are two pressure release holes at the back of the cabinet, one for the cable compartment and the other for the load switch/membrane compartment. This structure can maximize the reliability of personnel installation and equipment operation.

-- Each compartment

-- Cable compartment: The cable compartment is located at the top of the cabinet and is connected to adjacent switch cabinets.

-- Load switch: It is an independent unit and is filled with SF6 gas inside.

-- Cable compartment: Approximately 75% of the space is used for cable connections, fuses, grounding switches, CTs, PTs installation.

-- Mechanism compartment and interlock: The compartment includes the operating mechanism, mechanism interlock, position indication, auxiliary contacts, trip coils, live display, and interlock.

-- Relay box: The relay box is at the top of the cabinet and is optional. The compartment is used to install special devices such as instruments, relays, and motor units.

-- Circuit breaker compartment: One circuit breaker can be placed below the load switch.

-- Pressure release

-- Above pressure release: This is for releasing the gas pressure generated during arc accidents in the cable and load switch compartments.

-- Below pressure release: This is for releasing the gas pressure generated during arc accidents in the cable compartment.