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Features
About Us
Dongguan Shanyan Intelligent Technology Co., Ltd. is a modern intelligent technology enterprise specializing in the research and development, sales, and service of transformer products. The company’s sales and operations center is located in Dongguan, a major manufacturing hub. Relying on strong supply chain resources and an extensive market network, it provides professional power equipment products and solutions to customers across South China and throughout the country.
Transformer
Widely applicable to harsh environments with high fire resistance requirements, large load fluctuations, pollution, and humidity. It is the most ideal power supply and distribution equipment for important places such as airports, subways, power plants, metallurgy, etc,Hospitals, high-rise buildings, shopping centers, densely populated residential areas, petrochemicals, scientific research, etc.



Core indicators | Unit | Parameter |
| HV Rated Voltage | kV | 11/6.6 |
| LV Rated Voltage | kV | 0.415 |
| Rated Frequency | Hz | 50 |
| Rated Capacity | kVA | 30–2500 |
| Tap Range | % | ±5 / ±2×2.5 / +3−1×2.5 |
| Connection Group | — | Dyn11/Yyn0 |
| Short‑circuit Impedance | % | 4.0–6.0 |
| 1min PF Withstand Voltage | kV | 28 |
| Lightning Impulse Withstand | kV | 60 |
| Standards | — | MS IEC 60076‑11 |

Dry type transformer is a power transformer that uses air/resin as insulation and cooling medium, without combustible media such as transformer oil. Its core characteristics are fire and explosion prevention, insulation and moisture resistance, small size, and convenient operation and maintenance. It is suitable for high-rise buildings, densely populated areas, basements and other scenarios with strict fire prevention requirements. It is also an important configuration type of box type substation (especially dry-type European box type substation). The following summarizes the core characteristics from the dimensions of structural performance, operating characteristics, installation and operation, and scene adaptation.
1、 Core performance: Fire and explosion prevention, insulation and moisture resistance, safe operation;
2、 Structural design: compact and lightweight, modular, suitable for multiple installation scenarios;
3、 Installation and operation: convenient and efficient, maintenance free, adaptable to complex installation environments;
4、 Cost and Scenario: High initial cost, mainly for small and medium-sized capacity, suitable for high fire prevention requirements scenarios;
Core adaptation scenarios:
Indoor power distribution: high-rise buildings, shopping malls, hotels, hospitals, basement power distribution rooms;
Personnel intensive areas: schools, stations, sports centers, and underground parking garages in residential areas;
Special fire prevention zones: power distribution around chemical industrial parks, gas stations, data centers, and warehouses for flammable and explosive materials;
Clean outdoor scenes: European style transformer substations in the core areas and high-end commercial districts of Malaysian cities (requiring the installation of protective boxes)
| Comparison Dimension | Oil-immersed Transformer | Dry-type Transformer |
| Insulation & Heat Dissipation | Excellent insulation performance, high heat dissipation efficiency, and strong overload capacity | Insulation depends on air, poor heat dissipation, and weak overload capacity |
| Cost | 30%~50% lower manufacturing cost, low operation and maintenance cost | High manufacturing cost; regular insulation inspection required, resulting in high operation and maintenance cost |
| Service Life | 20~30 years (hermetically sealed type) | 10~15 years (conventional type) |
| Outdoor Adaptability | Strong protection performance, suitable for outdoor high temperature, salt spray and rainy conditions | Weak protection performance; additional protective box required for outdoor application |
| Capacity Coverage | Full capacity coverage from 30kVA to 3150kVA and above | Mostly 30~1250kVA, extremely high manufacturing cost for large capacity |
| Fire Safety | Flammable oil medium, potential fire risk in case of internal short circuit; special fire prevention measures required | Incombustible insulation material, good fire safety performance, no fire spreading risk |
| Installation & Mobility | Relatively heavy due to oil tank and dielectric oil; forklift/crane required for transportation and installation, low mobility | Light weight, convenient for transportation and installation, high mobility |
| Environmental Impact | Risk of oil leakage for non-hermetically sealed type, which may cause environmental pollution (avoidable by hermetically sealed type) | No medium leakage, green and environmentally friendly, no pollution risk |
| Applicable Scenarios | Outdoor power distribution, medium and large capacity power distribution, industrial and municipal power distribution | High-rise buildings, basements, densely populated areas, clean indoor power distribution |
Oil immersed transformer, with a core made of stacked silicon steel sheets, undergoes annealing treatment to restore its magnetic conductivity to its pre processing level. This product has low no-load loss, low no-load current, low noise, superior mechanical and electrical performance, and is stable and reliable. It is the preferred product for transformer replacement.
The iron adopts a stepped core joint, which reduces no-load loss and no-load current. The high and low voltage windings adopt a continuous axial oil passage, and U-shaped pads are used between the wire cakes to balance the winding axis and increase the mechanical strength of the winding.



Core indicators | Unit | Parameter |
HV Rated Voltage | kV | 11/11.5 |
LV Rated Voltage | kV | 0.415 |
Rated Frequency | Hz | 50 |
Rated Capacity | kVA | 200–2500 |
Tap Range | % | ±5 OR ±2×2.5 |
Connection Group | — | Dyn11 |
Short‑circuit Impedance | % | 4.0–5.0 |
1min PF Withstand Voltage | kV | 38 |
Lightning Impulse Withstand | kV | 75 |
Standards | — | MS IEC 60076 |

Oil immersed transformer is a power transformer that uses transformer oil as insulation and cooling medium.
It is the most widely used type of transformer in the power system, with excellent insulation performance, good heat dissipation effect, strong overload capacity, stable operation and other characteristics.
1、 Core performance: excellent insulation, efficient heat dissipation, strong overload capacity;
2、 Structural design: Mature technology, reliable sealing, suitable for outdoor use;
3、 Installation and operation: easy to operate, low maintenance cost, suitable for engineering applications;
4、 Cost and Scenario: High cost-effectiveness, full capacity coverage, adaptable to multiple scenarios;
Excellent cost performance ratio: Under the same capacity, the manufacturing cost of oil immersed transformers is 30% to 50% lower than that of dry-type transformers, and there is no need for additional power consumption for heat dissipation. The energy consumption cost for long-term operation is also lower, making it the economical choice for box type substations.
Wide capacity coverage: The rated capacity can range from 30kVA (small capacity American box transformer) to 3150kVA and above (large capacity European box transformer), meeting the full scenario needs of Malaysia from light load distribution in residential areas to heavy load distribution in industrial parks.
Core adaptation scenarios:
Outdoor power distribution: European/American box type substations, outdoor pole mounted transformers, floor standing distribution transformers;
Medium to large capacity power distribution: industrial parks, oilfield terminals, commercial plazas, urban public power distribution;
Distribution in harsh environments: salt spray areas along the coast of Malaysia, high temperature and humidity areas, and industrial areas with less dust.
Strong localization adaptability: For the tropical climate of Malaysia, 45 # high ignition point transformer oil can be selected (with better temperature resistance and prevention of high-temperature oil leakage), combined with anti condensation and anti UV design, which can operate stably in an environment of -10 ℃~+50 ℃ for a long time.
Advantages and Limitations: Oil-immersed Transformer vs Dry-type Transformer
| Comparison Dimension | Oil-immersed Transformer | Dry-type Transformer |
| Insulation & Heat Dissipation | Excellent insulation performance, high heat dissipation efficiency, and strong overload capacity | Insulation depends on air, poor heat dissipation, and weak overload capacity |
| Cost | 30%~50% lower manufacturing cost, low operation and maintenance cost | High manufacturing cost; regular insulation inspection required, resulting in high operation and maintenance cost |
| Service Life | 20~30 years (hermetically sealed type) | 10~15 years (conventional type) |
| Outdoor Adaptability | Strong protection performance, suitable for outdoor high temperature, salt spray and rainy conditions | Weak protection performance; additional protective box required for outdoor application |
| Capacity Coverage | Full capacity coverage from 30kVA to 3150kVA and above | Mostly 30~1250kVA, extremely high manufacturing cost for large capacity |
| Fire Safety | Flammable oil medium, potential fire risk in case of internal short circuit; special fire prevention measures required | Incombustible insulation material, good fire safety performance, no fire spreading risk |
| Installation & Mobility | Relatively heavy due to oil tank and dielectric oil; forklift/crane required for transportation and installation, low mobility | Light weight, convenient for transportation and installation, high mobility |
| Environmental Impact | Risk of oil leakage for non-hermetically sealed type, which may cause environmental pollution (avoidable by hermetically sealed type) | No medium leakage, green and environmentally friendly, no pollution risk |
| Applicable Scenarios | Outdoor power distribution, medium and large capacity power distribution, industrial and municipal power distribution | High-rise buildings, basements, densely populated areas, clean indoor power distribution |
The entire product features a compact size, simple installation and maintenance, low noise, low power consumption, anti-theft capability, full protection, and strong overload resistance. It is suitable for new residential communities, green belts, parks, stations, hotels, construction sites, airports, and other venues.



| Product name | Unit | Parameter |
| Rated Voltage | kV | 11/0.415 |
| Max. Operating Voltage | kV | 12(high-voltage side) |
| Rated Frequency | Hz | 50 |
| Rated Capacity | kVA | 50–1600 |
| 1min PF Withstand Voltage | kV | 38 |
| Lightning Impulse Voltage | kV | 75 |
| Cooling Mode | — | Oil immersed self cooling ONAN |
| HV Backup Fuse Breaking Current | kA | 50 |
| Plug‑in Fuse Breaking Current | kA | 25 |
| Ambient Temperature | ℃ | −5~+45 |
| Coil Temperature Rise | ℃ | 65 |
| No‑load Regulation | — | ±5% ±2×2.5% |
| Noise Level | dB | 45 |
| Protection Class | — | IP43 |

1、 Structural design: integrated, compact, occupying minimal space
2、 Electrical performance: Suitable for light load distribution, with simple protection configuration
3、 Installation and operation: convenient construction, strong maintenance free, and lower cost
4、 Usage scenario: Focus on outdoor light load, with clear boundaries for adaptability
Core adaptation scenarios: urban residential communities, villa clusters, street light distribution, small supermarkets, township distribution, temporary construction sites, agricultural irrigation and other small capacity, decentralized, light load outdoor distribution needs.
Scenario limitations: Not suitable for large capacity industrial distribution (such as large industrial and mining areas, industrial parks), high demand ring network distribution systems, high pollution/high salt spray/strong corrosion harsh environments (requiring additional customized protection), and not suitable for scenarios with high requirements for relay protection and intelligent control.
| Comparison Dimension | American Type Box Substation | European Type Box Substation |
| Structural Design | Integrated trinity structure (transformer + HV load switch + fuse), no independent compartments, all electrical components attached to the transformer body | Three independent compartments (HV cabinet + LV cabinet + transformer), separate layout with independent operation space for each part |
| Voltage Rating (Malaysia) | 11kV (HV) / 0.415kV (3P)/0.24kV (1P), 50Hz | 11kV (HV) / 0.415kV (3P)/0.24kV (1P), 50Hz |
| Rated Capacity Range | Small capacity: 30~800kVA (core range for light load) | Full capacity: 50~3150kVA and above (supports heavy load) |
| Floor Area | Ultra-compact: 1~3 ㎡, small occupation | Relatively large: 3~8 ㎡, need reserved operation space |
| Power Supply Mode | Mainly radial/terminal type, simple ring network available for customization (poor flexibility) | Both terminal type and ring network type available, flexible ring network power supply for complex distribution networks |
| HV Protection Configuration | Simple protection: Fuse + load switch, no complex relay protection device, realize quick short-circuit/overload protection | Complete protection: HV circuit breaker + professional relay protection device, support precise fault protection and tripping |
| Installation Cycle | Extremely short: ≤24h, factory pre-assembled and debugged, on-site only cable connection and grounding | Relatively long: 3~7 days, on-site secondary wiring, debugging and compartment commissioning required |
| Initial Cost | Low: 1/2 ~ 2/3 of the European type with the same capacity (no independent HV/LV cabinets, less material consumption) | High: Independent components and three-compartment structure, high material and process costs |
| Operation & Maintenance | Low difficulty: Fully sealed transformer (no oil conservator), few fault points, basically maintenance-free, only regular visual inspection and cleaning | Moderate difficulty: Independent three compartments, need regular inspection and maintenance of HV/LV cabinet components and transformer oil |
| Core Application Scenarios (Malaysia) | Outdoor light load & decentralized distribution: Residential quarters, street lamp power supply, small supermarkets, township distribution, temporary construction sites | Full-scenario power distribution: Industrial parks, oil fields/wharves, urban public distribution, high-rise buildings, large commercial plazas, heavy load industrial distribution |
| Expansion & Transformation | Difficult: Compact internal space, unable to expand capacity or add intelligent/relay protection components later | Easy: Independent compartment design, sufficient reserved space, convenient for capacity expansion and functional upgrade |
| Overhaul Convenience | Poor: Integrated components, overall disassembly and replacement required for fault, unable to maintain a single component independently | Good: Independent compartments, components can be disassembled and maintained separately, quick fault troubleshooting |
| Protection Grade (Basic) | IP43 (outdoor basic dustproof and rainproof) | IP54 (outdoor high dustproof and rainproof), IP55 for coastal customization |
| Noise Level | ≤50dB (lower, suitable for residential areas) | ≤55dB (complies with Malaysia's noise specification for commercial/residential areas) |
| Mobility | High: Small size and light weight, movable by forklift, suitable for temporary power distribution | Low: Large size and heavy weight, fixed installation, not easy to move |
Suitable for urban public power distribution, street light distribution, industrial and mining enterprises, urban buildings, residential communities, oil field docks, hotels, parks, and construction sites, etc., it can achieve ring network or terminal power supply mode.



Product name | Unit | Parameter |
Rated Voltage (HV) | kV | 11/0.415 |
Rated Capacity (HV) | kVA | 200、400、630 |
1min PF Withstand Voltage | kV | 35/45 |
Lightning Impulse Withstand | kV | 65/80 |
Rated Voltage (LV) | kV | 11/0.415 |
Rated Capacity (LV) | kVA | 50~3150 |
Rated Frequency | Hz | |
Protection Class | — | IP55 |
Noise Level | dB | ≤55 |
Standards | — | IEC 62271-202 |

1. Structural Design: Modular Separation, Safe and Standardized;
2. Electrical Performance: Full Capacity Coverage, Complete Protection and Reliable Power Supply;
3. Installation and Operation: Standardized Construction, Convenient Expansion and Low Long-term Cost;
4. Application Scenarios: Full-scenario Adaptation, No Restrictions on Light/Heavy Load;
The European type box substation is the mainstream type of pre-installed substation in Malaysia, and its core adaptation scenarios cover all types of outdoor/indoor distribution needs:
Urban public distribution: urban road network, park, commercial plaza, high-rise building distribution;
Industrial and mining enterprise distribution: industrial park, factory workshop, oil field, wharf, construction site heavy load distribution;
Municipal infrastructure: street lamp power supply, water supply and drainage system, traffic signal power supply;
Residential area distribution: large and medium-sized residential quarters, apartment buildings with high requirements for power supply reliability;
Comparison Dimension | American Type Box Substation | European Type Box Substation |
Structural Design | Integrated trinity structure (transformer + HV load switch + fuse), no independent compartments, all electrical components attached to the transformer body | Three independent compartments (HV cabinet + LV cabinet + transformer), separate layout with independent operation space for each part |
Voltage Rating (Malaysia) | 11kV (HV) / 0.415kV (3P)/0.24kV (1P), 50Hz | 11kV (HV) / 0.415kV (3P)/0.24kV (1P), 50Hz |
Rated Capacity Range | Small capacity: 30~800kVA (core range for light load) | Full capacity: 50~3150kVA and above (supports heavy load) |
Floor Area | Ultra-compact: 1~3 ㎡, small occupation | Relatively large: 3~8 ㎡, need reserved operation space |
Power Supply Mode | Mainly radial/terminal type, simple ring network available for customization (poor flexibility) | Both terminal type and ring network type available, flexible ring network power supply for complex distribution networks |
HV Protection Configuration | Simple protection: Fuse + load switch, no complex relay protection device, realize quick short-circuit/overload protection | Complete protection: HV circuit breaker + professional relay protection device, support precise fault protection and tripping |
Installation Cycle | Extremely short: ≤24h, factory pre-assembled and debugged, on-site only cable connection and grounding | Relatively long: 3~7 days, on-site secondary wiring, debugging and compartment commissioning required |
Initial Cost | Low: 1/2 ~ 2/3 of the European type with the same capacity (no independent HV/LV cabinets, less material consumption) | High: Independent components and three-compartment structure, high material and process costs |
Operation & Maintenance | Low difficulty: Fully sealed transformer (no oil conservator), few fault points, basically maintenance-free, only regular visual inspection and cleaning | Moderate difficulty: Independent three compartments, need regular inspection and maintenance of HV/LV cabinet components and transformer oil |
Core Application Scenarios (Malaysia) | Outdoor light load & decentralized distribution: Residential quarters, street lamp power supply, small supermarkets, township distribution, temporary construction sites | Full-scenario power distribution: Industrial parks, oil fields/wharves, urban public distribution, high-rise buildings, large commercial plazas, heavy load industrial distribution |
Expansion & Transformation | Difficult: Compact internal space, unable to expand capacity or add intelligent/relay protection components later | Easy: Independent compartment design, sufficient reserved space, convenient for capacity expansion and functional upgrade |
Overhaul Convenience | Poor: Integrated components, overall disassembly and replacement required for fault, unable to maintain a single component independently | Good: Independent compartments, components can be disassembled and maintained separately, quick fault troubleshooting |
Protection Grade (Basic) | IP43 (outdoor basic dustproof and rainproof) | IP54 (outdoor high dustproof and rainproof), IP55 for coastal customization |
Noise Level | ≤50dB (lower, suitable for residential areas) | ≤55dB (complies with Malaysia's noise specification for commercial/residential areas) |
Mobility | High: Small size and light weight, movable by forklift, suitable for temporary power distribution | Low: Large size and heavy weight, fixed installation, not easy to move |
The 10KV outdoor ring main unit is a new generation of automated power distribution equipment developed by our company based on the practical development needs of power system distribution automation. It features all the functions required for distribution automation, including system monitoring, system control, and system communication, making it an ideal modern switching device.



Core indicators | Unit | Parameter |
| Rated Voltage | kV | 11 |
| Rated Current | A | 630 |
| 1min PF Withstand Voltage | kV | 42 |
| Lightning Impulse Withstand | kV | 75 |
| Short‑time Withstand Current (3s) | kA | 20 |
| Protection Class | — | IP33/IP67(可选) |
| Main Switch | — | XGN15‑12/DRM‑12 |
| Standards | — | MS IEC 62271‑200、MS IEC 61330 |

Outdoor ring net cage (also known as outdoor box type ring net cabinet/switchgear) is a complete set of equipment that integrates high-voltage switchgear, protection and monitoring units, and is dedicated to outdoor cable ring network power supply. Its core features revolve around strong environmental tolerance, compact safety, minimal maintenance, easy deployment, and intelligence. The specific details are as follows:
1.Fully sealed and insulated, high protection and extreme resistance;
2.Compact structure, flexible installation, low infrastructure cost;
3.High reliability, long maintenance free cycle, fast fault isolation;
4.Strong adaptation to intelligence and automation;
5.Outstanding safety performance;
This switchgear does not require civil construction and occupies a small area. Its configuration is very flexible and the power supply method is more reliable. The construction, installation,and commissioning time are greatly reduced, and the overall cost is lowered.



Core indicators | Unit | Parameter |
Rated Voltage | kV | |
Rated Current | A | 630 |
Rated Active Load Breaking | A | 630 |
Rated Loop Breaking | A | 630 |
Short‑circuit Making Current (Peak) | kA | 50 |
Short‑time Withstand Current (3s) | kA | 20 |
1min PF Withstand Voltage | kV | 45 |
Lightning Impulse Withstand | kV | 75 |
Mechanical Life | Time | ≥2000 |
Loop Resistance | μΩ | ≤100 |
Protection Class | — | IP4X |
Standards | — | MS IEC 62271‑200 |

The outdoor intelligent box type switchgear (XGW-12/HWX-12, etc.) is a new generation of distribution network core equipment that integrates primary and secondary equipment, is fully sealed outdoors, highly intelligent, and can be unmanned. Its core features are strong environmental tolerance, primary and secondary integration, three remote+self-healing, modular maintenance free, safe and reliable, and rapid deployment.
1. Primary and secondary deep integration, high level of intelligence (core);
2.Fully sealed and insulated, with strong resistance to outdoor environments;
3.Modular and compact, flexible deployment, and fast construction;
4.High reliability, long cycle maintenance free;
5.Safe and environmentally friendly, widely applicable in various scenarios;
The core difference from ordinary outdoor cages:
Comparison Dimension | Outdoor circular net cage | Outdoor intelligent box type switchgear |
| intelligentization | Basically none/simple | Three remote+DTU+self-healing+remote monitoring |
| primary and secondary integration | Separate type, requiring external secondary connection | Deep integration, integrated design |
| Maintenance Mode | Manual inspection+on-site operation | Unmanned operation+remote maintenance |
| Fault handling | Manual investigation+isolation | Millisecond level automatic positioning+self-healing |
| construction period | Long, requiring secondary construction | Short, factory prefabrication+on-site quick installation |
The provided solution is very suitable for local needs, the team is quite professional, and the cost-effectiveness is very high
The proposal is very professional, meets local requirements, and the cooperation is very pleasant
The quality is very good, the cost-effectiveness is high, and the design plan provided by the team meets the requirements of the project very well
Projects
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Youguo Pan
Xiaoyun Yang
Sanfeng Zhou