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Medium-Voltage Switchgear

Medium-Voltage Switchgear

Prefabricated substations, pad-mounted transformer stations, switching stations and metal-enclosed switchgear for 10 kV to 40.5 kV distribution networks, including gas-insulated ring main units.

中压成套设备

Medium-Voltage Switchgear range

Prefabricated substations, pad-mounted transformer stations, switching stations and metal-enclosed switchgear for 10 kV to 40.5 kV distribution networks, including gas-insulated ring main units.

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Prefabricated Substation

预装式变电站
Prefabricated Substation
Technical parameterSpecification
Product modelYB series
StandardsGB/T 17467-2020, GB/T 11022-2020, GB/T 1094.1-2013, DL/T 537-2018
Rated high voltage12 kV
Rated low voltage0.4 kV
Rated frequency50 Hz
Enclosure protectionIP44 / IP33
HV power-frequency withstand (ground / phase)42 / 48 kV
HV lightning impulse withstand (ground / phase)75 / 85 kV
LV power-frequency withstand to ground2.5 kV
Product features
  • Highly integrated: HV switchgear, power transformer, LV switchgear and metering combined in one unit
  • Used for receiving and distributing electrical energy in distribution networks
  • Diverse power supply modes: terminal type, ring network type, dual power supply
  • Layouts available in inline and triangular configuration; standard universal, aesthetic landscape and compact enclosures
  • Operating temperature -15 °C to +40 °C, relative humidity daily average ≤95%, altitude up to 2000 m, seismic intensity grade 8
Scope of application
Municipal power gridIndustrial & mining enterprisesIndustrial & commercial parksResidential communitiesTransportation hubs
Customization is available for voltage class, capacity, protection rating, enclosure type, colour and monitoring functions. Tell us the site conditions and we will engineer the unit accordingly.
02 / 05

Pad-Mounted Transformer for Wind / Photovoltaic Power

风电/光伏组合式箱变
Pad-Mounted Transformer for Wind / Photovoltaic Power
Technical parameterSpecification
Product modelZGS-Z.G(F) series
Capacity300 – 10,000 kVA (customizable on request)
Voltage class10 – 40.5 kV
Rated frequency50 / 60 Hz
Connection groupDy11, Yd11, Dyn11, Yyn11, Yd11d11 (etc.)
Tap range±2 × 2.5% (customizable on request)
Application typeOutdoor
Altitude≤ 1000 m (high-altitude customization available)
Transformer oil25# / 45#
Ambient temperature-40 °C to +50 °C
Product features
  • Multiple protection schemes on both high- and low-voltage sides
  • Equipped with 10 kV or 35 kV energy-saving step-up transformers: low loss, low noise, strong short-circuit withstand and overload capability
  • Intelligent protection, monitoring and control functions
  • Special surface treatment for wind-blown sand, salt spray and strong UV exposure
  • Compact, light, easy to install, with anti-theft design
Scope of application
Wind powerCentralized photovoltaic stationsDistributed photovoltaic projectsIndustrial & mining enterprises
Customization is available for voltage class, capacity, protection rating, enclosure type, colour and monitoring functions. Tell us the site conditions and we will engineer the unit accordingly.
03 / 05

Switching Station

开闭所
Switching Station
Technical parameterSpecification
Product modelKBS-12 series
StandardsGB/T 17467-2020, GB/T 11022-2020, GB/T 1094.1-2013, DL/T 537-2018
Rated high voltage12 kV
Rated low voltage0.4 kV
Rated frequency50 Hz
Enclosure protectionIP44 / IP33
HV lightning impulse withstand75 / 85 kV
LV power-frequency withstand2.5 kV
Product features
  • Rated operating voltage covering 10 to 40.5 kV
  • Used for receiving and distributing electrical energy in distribution networks
  • Intelligent protection, monitoring and control functions
  • Compartmentalised functional units with five anti-misoperation interlocks
Scope of application
Urban residential communitiesIndustrial & commercial parksTransportation hubsIndustrial & mining enterprises
Customization is available for voltage class, capacity, protection rating, enclosure type, colour and monitoring functions. Tell us the site conditions and we will engineer the unit accordingly.
04 / 05

Armored Removable AC Metal-Enclosed Switchgear

铠装移开式交流金属封闭开关设备
Armored Removable AC Metal-Enclosed Switchgear
Technical parameterSpecification
Product modelKYN□-12 series
Rated high voltage12 kV
Rated short-circuit breaking current25 kA / 31.5 kA
Rated short-time withstand current25 kA / 35 kA, 80 kA / 4 s
Rated frequency50 Hz
Protection ratingIP4X / IP67 (enclosure / gas tank)
HV power-frequency withstand42 / 48 kV
HV lightning impulse withstand75 / 85 kV
Leakage rate≤ 0.01%
Product features
  • Modular, expandable architecture with full insulation and full sealing
  • Maintenance-free, compact, high-altitude adaptable and long service life
  • Compartmentalised functional units with five anti-misoperation interlocks and mechanical interlocks
  • Large feeder wiring capacity, compatible with various busbar arrangements
Scope of application
Power plantsUrban power gridIndustrial & mining enterprisesIndustrial & commercial parksTransportation hubs
Customization is available for voltage class, capacity, protection rating, enclosure type, colour and monitoring functions. Tell us the site conditions and we will engineer the unit accordingly.
05 / 05

Gas-Insulated Ring Main Unit (RMU)

气体全绝缘环网开关设备
Gas-Insulated Ring Main Unit (RMU)
Technical parameterSpecification
Product modelGSM6 series
StandardsGB/T 3906-2020, GB/T 1984-2014, GB/T 1985-2014, DL/T 593-2016, GB/T 2423-2008
Rated high voltage12 kV / 40.5 kV
Rated current630 A (typical)
Protection ratingIP4X / IP67 (enclosure / gas tank)
Power-frequency withstand42 / 48 kV
Lightning impulse withstand75 / 85 kV
Leakage rate≤ 0.01%
Rated frequency50 Hz
Product features
  • Compact, fully insulated and fully sealed design, maintenance-free
  • High-altitude adaptability and long service life
  • Suitable for complex and harsh operating conditions
  • Protection, monitoring and control functions
Scope of application
Urban power gridIndustrial & commercial parksResidential communitiesTransportation hubs
Customization is available for voltage class, capacity, protection rating, enclosure type, colour and monitoring functions. Tell us the site conditions and we will engineer the unit accordingly.
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