Products

Rated Power (kVA): >10kVA,≤250kVA Rated Voltage:Up to 38.5kV Features:Used for indoor or outdoor applications, canbe provided with off-load tap changers.

Rated Power (kVA)：>315kVA,≤2500kVA Rated Voltage :Up to 38.5kV Features:Used for indoor or outdoor applications, canbe provided with off-load tap changers.

Rated Power (kVA):>2000kVA,≤31500kVA Rated Voltage:Up to 38.5kV Features:Used for indoor or outdoor applications, can be provided with on-load tap changers or off-load tap changers.

CNHK produces the Single Phase, oil immersed Smalldistribution transformers which are pole mounting. They aresuitable for serving residential overhead distribution typeload, as well as for commercial, Industrial, lighting systemand diversified power applications. These transformers aredesigned for the duties normally encountered on electricutility power distribution systems.

Rated Power (kVA):> 10kVA,≤4000kVA Rated Voltage:Up to 38.5kV Features:F insulation Class, Provides the ultimate resistance tomechanical stress associated with heat and short circuit conditions in the most demanding applications.

Rated Power (kVA):>80kVA,≤2500kVA Rated Voltage:Up to 38.5kV Features:H insulation Class,Provides Environment friendly type, theultimate resistance to mechanical stress associated with heatand short circuit conditions in the most demanding applications.

KYN28A-12(Z) is Huanghua Group's (CNHK) indoor metal-clad withdrawable air-insulated switchgear for 12 kV distribution systems: system voltage 12 kV, rated current 630–5,000 A, short-circuit breaking current up to 50 kA, AC 50/60 Hz, designed and manufactured with reference to IEC 62271-200 and GB 3906. It comprises a fixed panel body and a centrally mounted withdrawable part, divided into four segregated compartments — busbar, circuit-breaker, cable and relay/instrument — with five interlocking functions and pressure-relief paths. Installation, operation and maintenance are all performed from the front; the panel can stand against a wall or be arranged back-to-back, serving power receiving and distribution as well as control, protection and measurement of 12 kV circuits.

KYN28A-24(Z) is an armoured, metal-clad withdrawable AC switchgear for 24 kV medium-voltage distribution, rated 630–3150 A with short-time withstand up to 31.5 kA / 4 s, fitted with the VS1-24 vacuum circuit breaker truck. It is used for power receiving and distribution in power plants, substations, industrial plants and renewable energy stations, providing control, protection, measurement and monitoring in compliance with IEC 62271-200.

The HEI-12 Eco-friendly Gas Insulated Ring Main Unit is a high-quality product provided by our company,based on years of experience in distribution field and design and construction.

The HEI-24 is Huanghua Group's next-generation eco-gas insulated metal-enclosed ring main unit (SF₆-free RMU) for 24 kV medium-voltage distribution networks. Nitrogen (N₂) or dry air replaces conventional SF₆ as the insulating medium, with a global warming potential (GWP) below 1, eliminating SF₆ emissions and end-of-life recovery obligations.

The HRM6-12/24 series SF6 gas-insulated metal-enclosed switchgear (fixed-type RMU) is intended for 12 kV and 24 kV systems with SF6 load break switches rated up to 630 A / 1250 A / 2500 A at AC 50/60 Hz. All high-voltage live parts and switching elements are sealed inside a low-pressure SF6 gas tank, giving a compact structure that achieves miniaturisation, light weight and full insulation, in compliance with IEC 62271-200.

The HRM6-40.5 series gas-insulated metal-enclosed switchgear (C-GIS) is a new generation of gas-insulated switchgear developed by Huanghua Group. Metal-armoured and hermetically sealed, it uses low-pressure SF6 gas at 0.04 MPa as the insulating medium. All HV components are waterproof and dustproof and unaffected by ambient conditions or altitude, making the switchgear completely maintenance-free. A permanent-magnet or spring operating mechanism combined with solid-sealed pole vacuum interrupters greatly reduces the number of parts.

The KYN61-40.5(Z) metal-clad AC enclosed withdrawable switchgear ("switchgear") is Huanghua Group's next-generation medium-voltage assembly for 40.5 kV power transmission and distribution systems. Rated voltage 40.5 kV, rated current up to 2,000 A (2,500 A on request), rated short-circuit breaking current 20 / 25 / 31.5 kA, designed and type-tested to IEC 62271-200.

The GGD low-voltage fixed-type switchgear is a classic LV assembly for 400 V, 50/60 Hz distribution systems, with rated current up to 3,150 A and rated short-circuit breaking current up to 50 kA. Designed and verified to IEC 61439-1, it serves power reception, distribution and lighting control in power plants, substations, industrial and mining enterprises and civil buildings.

Huanghua Group’s Low Voltage Switchgear series covers the full spectrum from power distribution boards (PDB)​ to Motor Control Centers (MCC)​ and intelligent control cabinets, engineered to operate as the critical secondary-side interface of transformer substations, industrial plants, renewable energy stations, and mission-critical infrastructure.

Ratings: rated voltage690/1000V, rated current up to 5000A, AC50/60Hz Application: applicable in the low-voltage system of factories etc. power Standards: IEC60439-1 distribution and motor control systems.. Protection level: IP40, IP43, IP51, IP54,

3 phases & 3wires,for power distributionIn power plants and industrial & mining enterprises.XL-21 is installed aganist wall,

Huanghua Group’s HKYB27 series Pad-Mounted Transformer is a fully factory-assembled, outdoor-rated power distribution unit integrating MV switching equipment (LBS), oil-immersed transformer, and LV switchgear (ACB/MCCB) within a single sealed enclosure. Engineered with a low-profile, tamper-resistant design featuring no externally accessible bolts, hinges, or fasteners, the unit provides a self-contained, maintenance-free solution requiring no perimeter fencing or additional protective structure

Huanghua Group’s HKYB27 series Pad-Mounted Transformer is a fully factory-assembled, outdoor-rated power distribution unit integrating MV switching equipment (LBS), oil-immersed transformer, and LV switchgear (ACB/MCCB) within a single sealed enclosure. Engineered with a low-profile, tamper-resistant design featuring no externally accessible bolts, hinges, or fasteners, the unit provides a self-contained, maintenance-free solution requiring no perimeter fencing or additional protective structure

Huanghua Group’s HKYBW-40.5 and HKYBW-12 series prefabricated compact substations are factory-integrated power distribution units that consolidate medium-voltage switchgear, power distribution transformer, and low-voltage switchgear into a single outdoor-rated enclosure. Engineered as a turnkey alternative to conventional civil-engineered substations, the compact substation delivers identical capacity in just 1/10 to 1/5 of the footprint​ , drastically reducing design workload, construction volume, and total project cost.

HKYBW-12 series prefabricated compact substations are factory-integrated power distribution units that consolidate medium-voltage switchgear, power distribution transformer, and low-voltage switchgear into a single outdoor-rated enclosure. Engineered as a turnkey alternative to conventional civil-engineered substations, the compact substation delivers identical capacity in just 1/10 to 1/5 of the footprint​ , drastically reducing design workload, construction volume, and total project cost.

Key Features Feature Description Three Independent Compartments Physically segregated MV switchgear, transformer & LV switchgear compartments ensure safe maintenance, fire containment and operational isolation. Each operates at its own protection class (IP65 / IP54 / IP23). Anti-Misoperation Interlocking Mechanical & electrical interlocks prevent incorrect operating sequences, protecting personnel and equipment during switching. Lift-and-Place Mobility Integrated […]

Key Features Feature Description Three Independent Compartments Physically segregated MV switchgear, transformer & LV switchgear compartments ensure safe maintenance, fire containment and operational isolation. Each operates at its own protection class (IP65 / IP54 / IP23). Anti-Misoperation Interlocking Mechanical & electrical interlocks prevent incorrect operating sequences, protecting personnel and equipment during switching. Lift-and-Place Mobility Integrated […]

ZN85-40.5 Indoor AC High-Voltage Vacuum Circuit Breaker (hereinafter referred to as circuit breaker) is suitable for three-phase AC 50Hz, rated voltage 40.5kV power system, and can be used for industrial and mining enterprises, power plants and substations to separate and connect load current, overload current and fault current.

Main Technical Parameters Item Unit Data Rated voltage / Maximum working voltage kV 24 / 24 1min power frequency withstand voltage kV 65 (phase-to-phase, to earth) / 79 (across open contacts) Lightning impulse withstand voltage (peak) kV 125 (phase-to-phase, to earth) / 145 (across open contacts) Rated frequency Hz 50 Rated current A 630, 1250, […]

ZN63A (VS1)-12 indoor AC medium -voltage vacuum circuit breaker is a three-phase AC 50Hz, rated voltage 7.2~12kV indoor switchgear, which can be used for control and protection of industrial and mining enterprises, power plants and substations, electrical facilities, and is suitable for places with frequent operations. The VET operating mechanism is integrated with the circuit breaker body, and the design can be used as a fixed installation unit, or it can be equipped with a special propulsion mechanism to form a trolley unit.

The HU series is a high-voltage molded case circuit breaker (MCCB) for AC networks up to 1140V and 63–800A. With overload and short-circuit instantaneous protection, it distributes power and safeguards lines and power equipment against overload, short-circuit and other faults. Designed for new energy — wind and photovoltaic — applications, it features a novel design, compact size, high breaking capacity and modular internal accessories.

The DC / PV series is a DC circuit breaker for DC networks from DC250V to DC1500V, rated current 63–800A. With overload long-delay and short-circuit instantaneous protection, it distributes power and protects lines and power equipment against overload, short-circuit and other faults in photovoltaic arrays, battery energy storage systems (BESS), DC charging infrastructure and wind power DC collection circuits.

The ZW32-24 is a medium-voltage outdoor switching device for 24 kV overhead distribution networks. Built around an integrally encapsulated (embedded) vacuum interrupter pole and a high-reliability spring operating mechanism, it breaks load, overload and short-circuit current with stable, repeatable performance. Stainless steel 304 housing; optional FTU controller and optional disconnector (ZW32-24CD).

ZW7-40.5 is a 40.5kV outdoor high-voltage AC vacuum circuit breaker with a porcelain-clad outdoor structure. Using vacuum as the arc-quenching medium, it combines high breaking performance, long mechanical life, minimal maintenance, pollution resistance and seismic robustness. Ideal for 35kV/33kV outdoor substations, industrial feeder protection and oil-free retrofit of legacy substations.

Ambient medumtemperature is not higher than +4o° C and notlower than-5°C; and the average value of 24 hours does not exceed 35°C (except for special orders);

HKM1E series intelligent molded case circuit breaker is a high-tech productfacing the 21st century.This product has advanced design, reliableperformance, high technical index, beautiful appearance, small size, adoptsmicroelectronic technology, and has intelligent overcurrent protection function.

This product is suitable for low-voltage power grid systems with three-phase four-wire neutral point directly grounded (TT system). It protects lines and electrical equipment from grounding faults, overcurrent, short circuit, overvoltage, undervoltage, phase loss after power failure and automatic tripping. It also provides indirect contact protection against personal electric shock. Conforms to standards: IEC 60947-2:2019, Communication RS-485 interface

This series of intelligent measurment switch is suitable for AC 50Hz, rated current 250A (100A-250A adjustable), rated insulation voltage 1000V, rated working voltage 400V three-phase four-wire, neutral point directly grounded distribution network.

The HKW1 series universal circuit breakers are suitable for distribution networks with AC 50Hz, rated voltage up to 660V (690V) and below, and rated current of 630A-6300A. They are used to distribute electrical energy and protect lines and power equipment from overload, undervoltage, short circuit,single-phase grounding and other faults. The circuit breaker has intelligentprotection function; Selective protection is precise, which can improve power supply reliability and avoid unnecessary power outages.

Huanghua Group’s DC Fast EV Charging Station series is engineered as the high-power backbone of commercial and public charging infrastructure, delivering 120kW–240kW output for fleet depots, highway service stations, municipal charging networks, and renewable energy integration sites. All units are type-tested and certified in accordance with IEC 61851-23 (DC charging), IEC 62196 (connector standards), and IEC 62752 (IC-CPD for portable charging), qualifying CNHK chargers for EU tenders, North A

AC Wallbox (Residential / Light Commercial) Lower-power AC charging for workplace and residential deployments. Power Options: 7kW / 11kW / 22kW (single-phase or three-phase) Interface: Type 2 (IEC 62196-2) Features: OCPP 1.6, WiFi/4G, IP65, RFID optional Installation: Wall-mounted or pedestal-mounted

This product constitutes acomplete high-voltage battery energy storage system, integrating battery modules,a Battery Management System (BMS), athermal management system, and fire protection and monitoring units.By connecting to an external Power ConversionSystem (PCS), the stored energy is converted into AC output,making it suitable for a wide range of applications includingfactories, retail outlets, holiday accommodation,and outdoor emergency power supplies.

The CNHK BESS is an all-in-one indoor & outdoor battery energy storage system that integrates lithium iron phosphate (LFP) battery packs, PCS (100 kW), MPPT and BMS/EMS into a single IP54 cabinet. Turnkey operation – on-grid / off-grid capable with real-time remote monitoring – makes it ideal for peak shaving, PV-storage-charging integration, microgrids and emergency backup.