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Waterproof Transformers

Home >  Products >  Transformers >  Waterproof Transformers

Outdoor Waterproof Power Transformer

Custom-built transformers for landscape lighting, architectural lighting, water features, irrigation controls and other equipment exposed to demanding environments.

  • Overview
  • Recommended Products

Waterproof Garden Light Transformer Specifications

Parameter Available Options
Product Type Encapsulated isolation, step-down or step-up transformer
Typical Rated Power 30VA–600VA; higher ratings evaluated according to application
Input Voltage 100V, 110V, 120V, 220V, 230V, 240V, 380V, 400V, 415V AC or custom
Output Voltage 6V, 9V, 12V, 18V, 24V, 36V, 48V, 60V, 72V, 110V AC or custom
Frequency 50Hz / 60Hz
Phase Single phase
IP Protection IP65 or IP67; special immersion requirements evaluated separately
Winding Material Copper winding with wire grade selected for the design
Encapsulation Thermally conductive epoxy resin
Insulation Class Class B, F or H according to temperature requirements
Electrical Isolation Primary-to-secondary isolation according to the approved design
Internal Protection Thermal fuse, resettable thermal protector or fuse options
Enclosure Round, square, metal, plastic or project-specific housing
Cable Options Custom length, color, jacket, terminals, plugs and waterproof connectors
Mounting Mounting holes, brackets, central mounting or custom base
Operating Environment Defined according to ambient temperature, moisture, chemicals and installation method
Compliance Support CE, RoHS, CQC or UL-oriented design support, subject to model and project requirements
Sample Lead Time As fast as 1–3 days when suitable materials are available

All specifications are finalized in the approved drawing. IP rating applies to the complete finished assembly under the agreed test and installation conditions.

Six Reasons Engineers Specify a Custom Waterproof Transformer

Complete Epoxy Encapsulation

Thermally conductive epoxy surrounds the internal coil and core assembly, helping protect critical components from moisture, dust and vibration. The resin system and curing process are selected according to temperature rise and operating environment.

Electrical Isolation for Low-Voltage Equipment

Separate primary and secondary windings provide galvanic isolation between the mains supply and low-voltage equipment. Insulation thickness, creepage distance and dielectric strength are defined according to the approved safety design.

Stable Voltage Under Actual Load

Core size, winding turns and copper wire diameter are calculated around the real load, duty cycle, cable length and required voltage regulation. This helps reduce low output voltage and unstable equipment operation.

Temperature-Rise Controlled Design

The winding, magnetic core, enclosure and potting material are considered as one thermal system. Temperature-rise validation can be performed under the agreed load and ambient conditions before mass production.

Outdoor Cable and Connector Options

Cable length, jacket material, wire color, waterproof gland, strain relief, plug and connector can be matched to the customer’s equipment. Cable exits are designed to reduce pulling stress and potential moisture entry.

Application-Specific Mechanical Design

Round and square housings, mounting holes, cable exit direction, overall dimensions and labels can be customized. ECKO can also develop replacement models from an existing drawing, specification or physical sample.

Customization Options

Custom Waterproof Transformers Built Around Your Equipment

A waterproof transformer should be designed around more than input and output voltage. ECKO evaluates the electrical load, installation method, ambient conditions, cable distance and required safety protection before finalizing the design.

Customization Category Available Options
Input Voltage Single input, dual input, multiple taps or voltage selector
Output Voltage Single output, dual output, multiple independent windings or center tap
Rated Power Customized according to continuous load, startup current and duty cycle
Frequency 50Hz, 60Hz or 50/60Hz
IP Protection IP65, IP67 or project-defined environmental protection
Housing Round, square, plastic, metal or customer-specific enclosure
Potting Material Epoxy formulation selected according to heat transfer and environment
Insulation System Class B, F or H; reinforced insulation where required
Protection Components Thermal fuse, resettable protector, primary fuse or secondary fuse
Cable Assembly Custom cable length, color, gauge, plug, terminal and connector
Mounting Base plate, mounting holes, brackets or central mounting
Performance Voltage regulation, temperature rise, no-load current and inrush optimization
Identification Customer logo, rating label, serial number and private-label packaging
Documentation Drawings, wiring diagram, inspection requirements and technical data sheet

Information Required for a Custom Quote

  • Input voltage and frequency
  • Required output voltage
  • Rated output current or VA
  • Load type and startup current
  • Continuous or intermittent duty
  • Ambient temperature
  • Required IP rating
  • Cable length and connector type
  • Maximum dimensions and mounting method
  • Target country, safety standard and annual quantity

Where Waterproof Transformers Are Used?

Swimming Pool Lighting Systems

A custom 12V or 24V AC isolation transformer can supply low-voltage swimming pool lights from a 110V, 120V, 220V, 230V or 240V mains input. The transformer should be installed in a code-compliant location outside the pool according to local electrical regulations.

Landscape and Garden Lighting

Waterproof transformer provide low-voltage power for garden lights, path lights, spotlights and other landscape lighting systems exposed to rain and humidity. Output voltage can be adjusted for cable length and expected voltage drop.

Fountains and Water Features

Fountain lights, misting systems and decorative water features often require isolated low-voltage power close to a humid operating area. Enclosure, potting resin, cable exit and mounting method are selected around the installation conditions.

Outdoor Architectural Lighting

The transformer can be customized for façade lighting, signage, courtyard lighting and commercial outdoor illumination. Multiple output windings or several lighting circuits can be considered during the design stage.

Spa and Smart Bathroom Equipment

Waterproof transformer can supply low-voltage lighting, control circuits and auxiliary electrical equipment in spa and bathroom systems. The installation zone, insulation requirements and applicable safety standards must be confirmed before production.

Marine, Irrigation and Wastewater Equipment

Special waterproof transformer designs can be evaluated for marine auxiliary equipment, irrigation controls and wastewater systems. Salt, chlorine, chemicals, UV exposure and corrosion requirements should be specified during the engineering review.

Why OEM Buyers Choose ECKO for Waterproof Transformer Projects

Application-Based Engineering

We review the load type, duty cycle, cable distance, ambient temperature, installation zone and target safety requirements before finalizing the transformer. This helps avoid incorrect VA selection, excessive temperature rise and unstable output voltage.

Electrical and Mechanical Design in One Project

The transformer winding, magnetic core, enclosure, resin, cable gland and mounting structure are developed as one complete assembly. This is especially important when IP protection and thermal performance must be achieved at the same time.

Controlled Design Documentation

Input, output, wire size, protection components, dimensions, cable pinout and label information are recorded in the approved drawing. Engineering changes can therefore be reviewed and controlled before they enter production.

Waterproofing Beyond an Outer Coating

A reliable waterproof design depends on the resin, housing, cable jacket, cable entry, strain relief, curing process and installation method. ECKO evaluates these details instead of relying only on an external waterproof label.

Prototype and Production Capability

Established in 2000, ECKO operates three workshops covering approximately 5,000 square metres with 150 skilled workers and annual capacity of around one million wound-component products Prototype lead time can be as fast as 1–3 days when the required materials are available.

Technical Support from Sample to Mass Production

Customers can confirm electrical performance, dimensions, cable assembly, label and installation fit with a prototype before production. Inspection requirements and project-specific test reports can be agreed during sample approval.

Quality Testing

Waterproof Transformer Inspection and Validation

Routine electrical tests and design-validation tests serve different purposes. The final test limits and inspection frequency should be recorded in the approved specification or Control Plan.

Test Item Purpose Recommended Frequency
Visual and Dimensional Inspection Confirms housing, label, cable, mounting and workmanship 100%
Winding Continuity Detects open circuits and incorrect connections 100%
Turns Ratio / No-Load Voltage Confirms input-to-output voltage ratio 100%
No-Load Current Checks magnetic design and assembly consistency Routine or agreed sampling
Winding Resistance Verifies winding consistency and conductor condition Routine or agreed sampling
Hi-Pot Test Verifies dielectric isolation between windings and accessible parts 100% when included in the approved Control Plan
Insulation Resistance Checks insulation condition and moisture-related leakage Routine or agreed sampling
Ground Continuity Confirms protective earth connection on applicable metal housings 100% where applicable
Load Voltage Test Confirms output voltage under the specified load Sample and lot verification
Temperature-Rise Test Validates thermal performance at rated load and ambient condition Design validation or type test
Thermal Protector Test Confirms the selected protector and trip requirements Component and sample verification
IP / Water-Ingress Test Validates the complete enclosure and cable-entry design Type test or project-defined sampling
Potting and Curing Inspection Checks resin fill, surface condition and curing consistency Visual inspection plus batch control
Final Functional Test Confirms correct wiring, polarity and operating performance 100% or agreed Control Plan

Quality Statement:

Every shipment follows the approved product specification. Test records, inspection reports or project-specific validation data can be discussed during the quotation and sample-approval stage.

From Application Requirements to Production-Ready Waterproof Transformer

Step 1 — Application Review

Send the input voltage, output voltage, rated current, load type, cable distance, ambient temperature, IP requirement and installation information.

Step 2 — Engineering Evaluation

ECKO evaluates transformer capacity, winding design, voltage regulation, temperature rise, insulation, protection components, enclosure and cable assembly.

Step 3 — Quotation and Drawing

You receive a commercial quotation together with the proposed electrical and mechanical specification. Key parameters are confirmed before prototype production.

Step 4 — Prototype Manufacturing

A custom sample is manufactured using the agreed materials and construction. Sample lead time can be as fast as 1–3 days for suitable projects with available materials.

Step 5 — Sample Verification

The customer checks electrical performance, dimensions, mounting, cable connections and operation with the actual equipment. Any required changes are reviewed before approval.

Step 6 — Pilot Run and Mass Production

After sample approval, production follows the confirmed drawing, materials and inspection requirements. A pilot quantity can be arranged when additional validation is required.

Step 7 — Final Inspection and Delivery

Finished products are inspected and packed according to the agreed specification. Carton, pallet, private-label packaging and export documentation can be customized.

Waterproof Transformer for Outdoor Equipment FAQ

1. What types of outdoor equipment can use a waterproof transformer?

Waterproof transformers can be used in landscape lighting, irrigation controllers, outdoor pumps, fountains, humidifiers, sanitation equipment, automatic gates, smart bathrooms, marine equipment and outdoor control systems. The transformer must be designed according to the equipment’s voltage, power and operating environment.

2. How should a transformer be selected for outdoor pumps or motors?

Pumps, motors, valves and solenoids may require a startup current several times higher than their normal operating current. Transformer selection should therefore consider rated power, starting current, operating duration and startup frequency—not only the equipment’s nominal wattage.

3. Does the IP rating include the cables and electrical connections?

The transformer enclosure may meet a specified IP rating, but the complete installation also depends on cable glands, connectors, terminal boxes and cable joints. All external connections must provide equivalent environmental protection to maintain the waterproof performance of the system.

4. What potting material is used in outdoor transformers?

Outdoor transformers commonly use insulating epoxy resin or thermally conductive potting compounds. Potting helps protect the windings against moisture, dust, vibration and environmental contamination while improving electrical insulation and mechanical stability.

5. How is heat dissipated from a fully sealed transformer?

Heat is transferred from the winding and magnetic core through the potting material to the external enclosure. The enclosure dimensions, potting compound, rated load and mounting position must be designed to keep the transformer within its permitted temperature range.

6. Can the transformer operate in freezing or high-temperature environments?

The transformer can be designed for different ambient temperature ranges. Low temperatures may affect cable flexibility and potting materials, while high temperatures may require power derating or improved heat dissipation. The expected minimum and maximum temperatures should be provided during design.

7. Is a standard outdoor transformer suitable for coastal environments?

Coastal and marine environments contain salt and moisture that can accelerate corrosion. For these applications, corrosion-resistant mounting parts, sealed cable entries, suitable outdoor cables and salt-spray-resistant materials may be required.

8. How can condensation inside outdoor equipment be prevented?

A fully potted transformer significantly reduces the internal space where moisture can accumulate. Proper sealing, drainage, ventilation of the surrounding equipment and correctly positioned cable entries can also help prevent condensation-related electrical problems.

9. Can the cable length, connector and plug be customized?

Yes. ECKO can customize input and output cable lengths, conductor sizes, wire colors, plugs, waterproof connectors, terminal blocks and cable glands. Cable materials can also be selected according to UV exposure, temperature, flexibility and environmental requirements.

10. What information is needed to develop a transformer for outdoor equipment?

Please provide the input voltage and frequency, output voltage and current, rated power, equipment type, startup current, duty cycle, IP rating, ambient temperature, installation method, cable requirements, product dimensions and applicable certification standards. Drawings or equipment specifications can help accelerate the design process.

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  • R&D Team

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    Strong design and development ability, our R&D team, more than 20 years of industry experience, we provide a full set of solutions. Make samples quickly,1day the soonest.

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