GNRMU-40.5 SERIES GAS INSULATED SWITCHGEAR (C-GIS)
Short Description:
GNRMU-12/24 series environmentally friendly gas insulated ring main unit (hereinafter referred to as GNRMU series switchgear) is a medium voltage switchgear with environmentally friendly gas insulation independently developed by Xidong Electric.It has the characteristics of green environmental protection, reliable operation, ensuring safety, compact structural design, small space occupation, maintenance free, long service life, and strong environmental adaptability.
Product details
Overview：
GNRMU-12/24 series environmentally friendly gas insulated ring main unit (hereinafter referred to as GNRMU series switchgear) is a medium voltage switchgear with environmentally friendly gas insulation independently developed by Xidong Electric.It has the characteristics of green environmental protection, reliable operation, ensuring safety, compact structural design, small space occupation, maintenance free, long service life, and strong environmental adaptability.
The GNRMU-12/24 series switchgear is a completely sealed system, with all primary components, live parts, and switches enclosed in a stainless steel casing, unaffected by environmental factors; The product adopts modular design, which can be arranged arbitrarily according to different design schemes, realizing the combination of common box and expandable units, meeting the needs of various secondary transmission and distribution substations for compact switchgear
The GNRMU-12/24 series switchgear has passed the type test of the National High Voltage Electrical Testing Center and can be widely used in small secondary distribution stations, box type switchgear, industrial and mining enterprises, airports, railways, commercial areas, high-rise buildings, highways, subways, tunnels, and places with harsh natural conditions.
Model Meaning：
Execution standards
GB/T 311.1 Insulation Coordination Part 1: Definitions, Principles and Rules
GB/T1984 High Voltage AC Circuit Breakers
GB/T1985 High voltage AC isolating switches and grounding switches
GB/T 3804 3.6kV~40.5kV High Voltage AC Load Switches
GB/T 3906 3.6kV~40.5kV AC Metal Enclosed Switchgear and Control Equipment GB/T 4208 Degrees of Protection Provided by Enclosures (IP Code)
GB/T 11022 Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards DL/T 404 3.6kV~40.5kV AC Metal Enclosed Switchgear and Control Equipment DL/T 402 High Voltage AC Circuit Breakers
DL/T 593 Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards 12kV Ring Main Unit (Box) Standardized Design Customization Scheme (2020 Edition)
Usage environment
Altitude:<4000m (please specify when the equipment is operating at an altitude of over 1000m for adjustment of inflation pressure during manufacturing).
Environmental temperature: Maximum temperature:+55 ° C; Minimum temperature: -25 ° C; average temperature within 24 hours does not exceed 35 ° C.
Environmental humidity: The average relative humidity within 24 hours should not exceed 95%; The average monthly relative humidity does not exceed 90%.
Installation environment: There are no explosive or corrosive gases in the surrounding air, no severe vibrations or impacts in the installation site, and the pollution level does not exceed Class C in GB/T26218.1.
Seismic intensity: 8 degrees.
installation diagram：
