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.
Start Your Waterproof Transformer Project
Send us your transformer label, drawing, wiring diagram, load information or an existing sample. Our team will review the requirements and propose a suitable custom solution.
Waterproof Transformers FAQ
1. What type of transformer is required for swimming pool lights?
Swimming pool lights commonly use an isolation transformer that converts the mains input into a lower AC voltage, such as 12V or 24V. The input voltage, output voltage, rated current, isolation requirements and installation location must comply with the applicable local electrical regulations.
2. Should I choose a 12V or 24V transformer for pool lighting?
The correct voltage must match the rated input of the pool light. For the same power, a 24V system carries less current than a 12V system and may experience lower cable losses. However, 24V must not be used with lights designed only for 12V.
3. How do I calculate the required transformer power?
Add the rated power of all lights that will operate simultaneously, then consider cable losses, startup characteristics, ambient temperature and the desired operating margin. Do not select a transformer whose rated capacity is lower than the total connected load.
For example, ten 12W lights create a nominal load of 120W. The final transformer rating should be confirmed after considering the cable length and installation conditions.
4. Can one transformer power multiple pool or landscape lights?
Yes. One transformer can power multiple lights when the combined load does not exceed its rated capacity and the wiring is correctly designed. Please provide the number of lights, wattage per light, operating voltage and cable length for evaluation.
5. Can you provide multiple output circuits?
Yes. ECKO can design a transformer with multiple secondary windings, separate output circuits, a center-tapped output or several voltage outputs. Please specify whether the circuits must be electrically isolated from one another.
6. How does cable length affect pool and landscape lighting?
Long low-voltage cables create voltage drop, especially in 12V systems with high current. Excessive voltage drop can cause dim lighting, unstable operation or different brightness levels between fixtures.
Please provide the cable length, conductor size, number of lights and operating current so that the output voltage and wiring arrangement can be evaluated.
7. Can the output voltage be adjusted to compensate for cable voltage drop?
Yes. The output voltage may be optimized for a defined cable length and load. The adjustment must remain within the acceptable input range of the lighting equipment, so the cable and load information should be confirmed before production.
8. Does an IP67 transformer mean it can be installed permanently underwater?
No. IP67 normally indicates protection against dust and temporary immersion under defined test conditions. It does not automatically mean the transformer is approved for continuous underwater operation.
A pool-light transformer is normally installed outside the pool in a compliant electrical zone. Permanent underwater use requires a specially designed and validated product.
9. What is the difference between IP65 and IP67?
IP65 generally provides protection against dust and water jets, making it suitable for many sheltered outdoor installations. IP67 adds protection against temporary water immersion under defined conditions.
The required rating should be selected according to the actual installation location, exposure level and applicable electrical standard.
10. Does a pool-light transformer provide AC or DC output?
A conventional transformer provides AC output. Many pool and landscape lights operate on 12V AC or 24V AC, but some LED products require DC power or a dedicated LED driver.
Please confirm whether the lighting equipment requires AC or DC before selecting the transformer.