Month: August 2023

RMU Enclosure

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Outdoor SF6 RMU Enclosure (HXW-12 )

The RMU Enclosure designed to facilitate both transportation and installation of the switchgear. The enclosure can help to use it in harsh environments and it will protect it against corrosion, etc. 

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Product Highlights

  • Great sealing, moisture-proof and anti corrosion.
  • 20 years of maintenance-free operation.
  • Equipped with safety relief valve to discharge the high pressure and avoid explosion.
  • Perfect heat-isolation.
  • Waterproof and dustproof
  • Fully sealed to avoid entrance of small animals (mouse, etc). 
  • Modular design, easy and flexible combination.
  • Embedded DTU for intelligent control features (optional)
  • Customized fabrication based on different raw materials (polystyrene sandwich plate, stainless steel plate, A3 cold-rolled steel plate, fiberglass plate, etc.)

Ring Main Unit

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Air Insulated RMU

HXHB-12 represents solid insulated series of the RMU . The nitrogen or dry compressed air is used as insulating medium. Meanwhile there is a vacuum interrupter. The protection level of HXHB-12 is IP67, the entire switching device is fully sealed to be isolated from external environment, which ensures a safe and reliable operation.

Product Highlights

  • Eco-friendly (using nitrogen or compressed gas)
  • High level of safety (sealing live compartments by  nitrogen or dry compressed air) 
  • Compact design that needs minimum space for installation (W : 420 mm * H : 1600mm)

Ring Main Unit

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Solid Insulated RMU

This model of series HXGN-12 RMU is solid insulated .It is an eco-friendly device, fully insulated and sealed inside a metal-enclosure. This type of RMU is widely applicable in MV distribution networks (12/24 kV). All live compartments of the RMU are sealed by solid insulation materials through solid insulating bus bar connection mechanism.

Product Highlights

  • Eco-friendly
  • Compact structure
  • Strong and reliable isolation (high quality epoxy resin)


Ring Main Unit

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SF6 Gas Insulated RMU

This model of series HXGN-12  is  gas insulated RMU. The SF6 gas is injected inside an isolation chamber to seal all live compartments. HXGN-12 is widely applicable in MV distribution networks (12/24 kV) .

Product Highlights

  • Safe Operation
  • Economic  (up to 20 years maintenance-free operation).
  • Modular and Scalable
  • Expandable


Recloser & Switch

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ZW20 Outdoor Overhead Vacuum Circuit Breaker

ZW20 is a 3 phase vacuum circuit breaker with rated voltage of 12kV for operating frequency of 50HZ. This product is designed to be mounted on the pole. This product has connecting and disconnecting functions to protect the overhead line feeders from overload, over current and short circuit current. ZW20 has a wide range of application in power distribution networks as well as mining, traction control, etc. ZW20 is equipped with a controller in order to comply with requirement of the smart grids.

Product Highlights

  • Convent and flexible operation.
  • Excellent disconnection performance. Support up to 25KA and 30 times circuit breaker occurs.
  • Flexible installation. (just need to lift up on the pole and install it on a simple stand).
  • Equipped with a protection valve, to relief the pressure and prevent the explosion.
  • High protection level (IP67)

Recloser & Switch

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ZW32 Outdoor Vacuum Circuit Breaker

ZW32 outdoor MV vacuum circuit breaker is designed for overhead distribution network up to 38kV. This product can break load current, overload current and short current. ZW32 supports manual as well as automatic operation modes. Both springs operation and permanent magnet operation are available as options.

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Product Highlights

  • Equipped with Arc interrupting chamber (safety & reliability)
  • Manual and automatic (motorized) operation
  • Installation of an isolator switch before vacuum circuit breaker to increase the level of safety during operation & maintenance (optional)


Recloser & Switch

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HXD820 Cutout Single-Phase Recloser

HXD820 Cutout single-phase recloser, can be installed directly on a fuse insulator, as a current protection equipment in lateral lines, and a replacement to cut-out fuse.

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It can automatically operate to protect the network following the user configured parameters opening the circuit on a single-phase overcurrent fault event (ANSI50/51) and auto reclose(ANSI 79) based in customer settings, restoring power supply in seconds if the fault is not permanent, the grid reliability can be greatly improved. 

HXD820 is characterized by a product with a clean design, lightweight, self-powered, self-protection functions, locally open & close operation, with live line installation capability.

Product Highlights

  • Higher reliability of power distribution, improve the customer experience
  • Reduces operational and maintenance cost
  • Lower revenue loss due to less outage time
  • Higher compliance with the standards from regulatory authority

FCI & DCU

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HXD430 Fault Circuit Indicator

HXD430 is a type of FCI which is designed for underground applications. Each set of HXD430 contains 3 over-current sensors and 1 zero-sequence sensor. The over-current sensors clamp on each of three phase and zero-sequence sensor clamps on the cable (one sensor for all 3 phases). Over-current sensors can detect short-circuit fault and zero-sequence sensor can detect ground fault. All sensors provide local indication and remote alert (via Optical fiber). Also a display panel is offered to show line current and fault status.

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Product Highlights

  • Local indication(LEDs and rotary flag)
  • Fiber optic communication (remote alarm)
  • Low battery notification
  • False alarm prevention during load fluctuation, inrush current, switch-on surge, etc.
  • Anti-corrosion material
  • IP40 Protection level

FCI & DCU

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HXD420 Data Collection Unit

  • HXD420 is a Data Collection Unit (DCU) to manage and configure HXD410 FCIs.
  • HXD420 DCU collects fault data from FCI and then communicates with central control station via 2G/3G/4G (using SCADA system).

Product Highlights

  • Support IEC101 and DNP3.0 protocols
  • Equipped with solar panel and battery backup
  • Remote configuration and upgrading
  • Ultraviolet protection 
  • Anti-corrosion 
  • IP55

FCI & DCU

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HXD410 Fault Circuit Indicator

HXD410 is a type of FCI which is designed to be installed on distribution overhead lines. It can detect overload, short-circuit and ground fault. Furthermore, it can recognize transient fault and permanent faults. This model can indicate the fault by LEC illumination as well as rotary flag (in red color).  Meanwhile, if the system is equipped with RF module then it can provide remote alarm for dispatching center (or control station).

Product Highlights

  • Low power consumption
  • Built-in lithium batteries (high capacity)
  • Low-battery notification
  • Live installation (without power outage)
  • Easy maintenance, wireless configuration and update
  • False alarm prevention during load fluctuation, inrush current, switch-on surge, etc.
  • Ultraviolet protection 
  • Anti-corrosion
  • High protection level (IP67)