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The dry-type lighting transformer is a specialized, compact transforming unit designed exclusively for lighting circuits, localized machine power, and precision instrument distribution. Utilizing ambient air as the cooling medium and high-strength solid insulation processes (epoxy resin or VPI), it operates 100% oil-free. By stepping down standard grids (220V/380V) to extremely safe low voltages (36V/24V/12V), it thoroughly eliminates fire and electrical shock hazards. It is highly favored in shopping malls, hospitals, damp factory zones, subway stations, and machine tool control cabinets.
Core Parameters:
• Rated Voltage: Input 220V/380V | Custom Output 36V/24V/12V (or 220V isolation).
• Structure: Single-Phase / Three-Phase Solid Insulation (Ultra-compact, wall/floor mount).
• Application: Dedicated low-voltage lighting and localized safety power.
Product Features
Steps down mains power precisely to safe, non-lethal voltages (36V, 24V, 12V), providing critical protection for personnel in damp areas, pools, or confined machine spaces.
Constructed with high-strength solid insulation (epoxy resin or VPI impregnated). Oil-free and completely flame-retardant, adapting safely to highly populated public venues.
Built with a high-permeability silicon steel core that drastically dampens acoustic vibration. Runs virtually silently, making it unnoticeable in hospitals, schools, and offices.
Focuses on micro-to-small capacities (0.5kVA~50kVA). Its tiny footprint allows for flexible, space-saving installations, easily mounting on walls, inside cabinets, or on the floor.
Isolates lighting and delicate control equipment from main grid fluctuations and interference, extending the lifespan of expensive LED arrays and precision tools.
Devoid of moving parts or liquid insulators. The solid-state design requires virtually zero maintenance beyond occasional dusting, guaranteeing long-term peace of mind.
Key Specifications (Lighting Transformer)
| Parameter | Typical Value | Description |
| Rated Capacity | 0.5kVA ~ 50kVA | Highly scalable micro-ranges perfectly suited for localized control and lighting arrays. |
| Rated Voltage | HV: 220V / 380V LV: 12V / 24V / 36V / 220V | Inputs standard mains power and outputs ultra-safe or isolated operational voltages. |
| Structure Phase | Mainly Single-Phase (Three-Phase optional) | Primarily designed to power single-phase lights, relays, and localized instruments. |
| Rated Current | Calculated by I = S / U | Directly dictates the selection of downstream fuses, breakers, and wiring. |
| Insulation Class | Class F (155℃) / Class H (180℃) | Superior thermal endurance ensuring stable operation without insulation breakdown. |
| Cooling Method | AN (Natural Air) | Operates entirely on natural convection, perfectly satisfying low-capacity continuous loads. |
Detailed Description
The dry-type lighting transformer is a specialized, highly compact unit acting as the ultimate safety barrier for local power circuits. Unlike massive substation transformers, it focuses on stepping down standard 220V/380V mains grids into extremely safe, non-lethal voltages like 36V, 24V, or 12V. By employing a solid epoxy resin or VPI impregnated winding structure without any oil, it guarantees an explosion-proof, flame-retardant, and zero-pollution operational lifecycle.
Covering an ultra-compact capacity range of 0.5kVA to 50kVA, it is mostly built in a single-phase configuration. This makes it an indispensable component for lighting arrays in damp or hazardous areas (like mining tunnels or swimming pools), sensitive CNC machine tool controls, and precise medical instruments. Its whisper-quiet core and maintenance-free solid-state design allow it to be effortlessly wall-mounted or integrated directly into tight switchgear cabinets.
Full Series Technical Reference (0.5~50kVA Micro/Small Platform)
| Capacity (kVA) | Phase Configuration | Input Voltage (V) | Output Voltage (V) | Typical Total Weight (kg) | Typical Dimensions W×D×H (mm) |
| 0.5 | Single-Phase | 220 / 380 | 12 / 24 / 36 | 8 | 150×130×180 |
| 1 | Single-Phase | 220 / 380 | 12 / 24 / 36 | 12 | 180×150×210 |
| 2 | Single-Phase | 220 / 380 | 24 / 36 / 110 / 220 | 18 | 220×180×250 |
| 5 | Single-Phase | 220 / 380 | 36 / 110 / 220 | 35 | 280×220×320 |
| 10 | Single-Phase / Three-Phase | 220 / 380 | 36 / 110 / 220 | 65 | 350×280×400 |
| 20 | Single-Phase / Three-Phase | 220 / 380 | 110 / 220 | 110 | 450×350×500 |
| 30 | Single-Phase / Three-Phase | 220 / 380 | 110 / 220 | 150 | 500×400×550 |
| 50 | Single-Phase / Three-Phase | 220 / 380 | 110 / 220 | 230 | 600×450×650 |
* The table illustrates the standard micro/small dry-type lighting platform. Dimensions and weights are highly dependent on exact voltage ratios, insulation processes (Resin Cast vs VPI), and whether an IP20 protective enclosure is added.
FAQ
Stepping down the voltage to 36V, 24V, or 12V is strictly enforced for personnel safety in specific environments, complying with industrial "Extra-Low Voltage" (ELV) regulations:
1) Electrical Shock Prevention: In standard dry conditions, 36V is considered the maximum safe voltage for human contact. In damp environments (like basements, mines, or factory floors with cooling fluids), the human body's resistance drops significantly, making standard 220V lethal. Lighting transformers drop the voltage to 24V or 12V to completely eliminate shock hazards for workers.
2) Equipment Isolation: Lighting transformers often feature separated primary and secondary windings (Isolation Transformers). This means the low-voltage side is completely electrically isolated from the main grid. If a ground fault occurs on the equipment side, a closed-circuit shock loop is not easily formed, adding a massive secondary layer of safety for operators interacting with CNC machines or hand-held tools.
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