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Explore the complete JOHNN product range for power distribution projects.
This 35kV oil immersed power transformer is applicable to power distribution of substations and industrial & mining plants.
Insulating oil serves for heat dissipation and electrical insulation. Featuring stable operation, strong overload capacity, reliable cooling structure and easy maintenance, it can supply power steadily under long-term outdoor conditions, and is widely used for high-voltage power transmission and distribution.
This amorphous alloy oil-immersed transformer uses amorphous alloy as core material, with insulating oil for cooling and insulation. It features extremely low core loss and remarkable energy saving. The fully sealed structure prevents oil leakage with maintenance-free performance. Low temperature rise slows insulation aging, suitable for outdoor power distribution, industrial & commercial sites and new energy projects. It is eco-friendly with lower overall power consumption during service life.
10kV & 20kV oil-immersed transformers are mainstream power distribution transformation equipment. With insulating oil for insulation and heat dissipation, they feature stable operation and easy maintenance. They can be installed standalone or integrated into box-type substations, widely applied in power grids, industrial parks, photovoltaic projects, municipal works and industrial & mining facilities to meet various medium-voItage power distribution demands.
The photovoltaic inverter booster integrates inverter, transformer, power distribution and protection units, realizing integrated DC-AC conversion and voltage boosting for photovoltaic power. Featuring modular integrated design, it enables convenient installation and saves on-site space. Widely applied in centralized photovoltaic power stations to ensure stable grid connection of solar power.
Dry-type amorphous alloy transformers adopt amorphous alloy for iron cores and use air for heat dissipation and insulation, with windings usually cast and solidified by epoxy resin. Featuring low no-load loss, excellent energy-saving performance, no risk of oil leakage and fire, as well as easy maintenance, they are widely applied to indoor power distribution scenarios such as buildings and industrial plants.
Resin-insulated dry-type transformers feature high safety, flame retardancy and zero pollution, and can be installed directly at load centers. They are maintenance-free and easy to install, with low overall operating cost and power loss. Thanks to excellent moisture resistance, the transformers operate reliably at 100% relative humidity, and can be restarted without pre-drying after shutdown.With low partial discharge, low noise and outstanding heat dissipation, they can run at 150% rated load under forced air cooling. A complete temperature protection & control system is equipped to ensure secure operation, delivering high operational reliability.
Resin-insulated dry-type transformers feature high safety, flame retardancy and zero pollution, and can be installed directly at load centers. They are maintenance-free and easy to install, with low overall operating cost and power loss. Thanks to excellent moisture resistance, the transformers operate reliably at 100% relative humidity, and can be restarted without pre-drying after shutdown.With low partial discharge, low noise and outstanding heat dissipation, they can run at 150% rated load under forced air cooling. A complete temperature protection & control system is equipped to ensure secure operation, delivering high operational reliability.
Resin-insulated dry-type transformers feature high safety, flame retardancy and zero pollution, and can be installed directly at load centers. They are maintenance-free and easy to install, with low overall operating cost and power loss. Thanks to excellent moisture resistance, the transformers operate reliably at 100% relative humidity, and can be restarted without pre-drying after shutdown.With low partial discharge, low noise and outstanding heat dissipation, they can run at 150% rated load under forced air cooling. A complete temperature protection & control system is equipped to ensure secure operation, delivering high operational reliability.
MNS LV withdrawable switchgear (hereinafter referred to as device) is manufactured by standard module through consulting MNS series low voltage switch cabinet of Switzerland ABB Co-mpany, and synthetically improved. The device is applicable to the system with AC 50Hz, rated working voltage 660V and below, used as control device for various power generation, transmission, distribution, power transfer and power consumption device. It is widely used in low voltage distribution system of various mining enterprise, tall building and hotel, municipal construction etc. Besides the general land use, after special disposal, it also can be used for marine petrol drill taken platform and nuclear power station.
GCS low-voltage complete distribution equipment is applicable to power distribution scenarios across power plants, petrochemical, metallurgical, textile, high-rise building and other industries, especially for large-scale power plant and petrochemical projects featuring high automation and computer system interfacing requirements. Designed for 3-phase 50(60)Hz AC power grids with rated operating voltages of 380V, 400V, 660V and rated current up to 6300A, the unit fulfills power distribution, centralized motor control and reactive power compensation duties, serving as a widely adopted reliable low-voltage power distribution solution for industrial and building power supply systems.
The HXGN17-12 box-type fixed AC metal-enclosed switchgear is a common high-voltage ring main unit developed for urban power grid renovation and new distribution engineering construction. It is capable of breaking load current and short-circuit current, as well as making short-circuit current reliably to meet the requirements of circuit switching and fault protection in power distribution systems.The main circuit adopts spring operating mechanisms with both manual and electric operation modes. Separate manual operating mechanisms are equipped for earthing switches and isolating blades to adapt to operation in maintenance scenarios. Featuring high integration and compact size to save installation space, the equipment brings no combustion or explosion risks during operation. It is also fitted with complete five-prevention interlocks to avoid incorrect operations, delivering stable and safe power supply for various ring network power distribution applications.
