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. How does the equipment duty cycle affect transformer selection?
A transformer operating continuously requires different thermal consideration from one used intermittently. Please provide the operating time, rest period, switching frequency and maximum load so the transformer can be designed without excessive temperature rise.
2. Can the waterproof transformer be installed inside a sealed equipment enclosure?
A sealed enclosure may trap heat around the transformer. The internal enclosure temperature, available space, ventilation and surrounding components must be considered when determining transformer capacity and allowable temperature rise.
3. Is the transformer compatible with smart controllers, relays or automatic switches?
Provided the controller or relay can handle the transformer’s input voltage, rated current and momentary inrush current. The switching device should be selected according to the actual electrical load rather than only the transformer’s nominal wattage.
4. Can the transformer tolerate frequent start-and-stop operation?
Frequent switching may increase electrical and thermal stress, especially if each startup produces a high magnetizing current. ECKO can optimize the transformer design when the expected switching frequency and control method are provided.
5. Can a waterproof transformer be used in equipment exposed to vibration?
It can be designed for vibrating outdoor equipment using full resin encapsulation, reinforced cable outlets and suitable mounting structures. The expected vibration frequency, intensity and mounting orientation should be confirmed during product development.
6. Will the potting resin crack during repeated hot and cold cycles?
A suitable potting compound must provide compatible thermal expansion, adhesion and flexibility. For applications with large temperature variations, material selection and thermal-cycle validation can be included in the development plan.
7. Does installation altitude affect transformer performance?
At higher altitudes, reduced air density can lower cooling performance and affect electrical insulation requirements. The installation altitude should be provided so that any necessary power derating, insulation adjustment or thermal optimization can be evaluated.
8. Can an IP67 transformer be cleaned with a high-pressure water jet?
Not automatically. IP67 immersion protection does not necessarily mean resistance to high-pressure or high-temperature water cleaning. If pressure washing is expected, the water pressure, distance, temperature and cleaning method must be specified separately.
9. Does the transformer consume power when the outdoor equipment is switched off?
If the transformer remains connected to the mains, it will normally have a small no-load loss even when the secondary equipment is not operating. Low no-load loss can be considered during the magnetic and winding design when standby energy consumption is important.
10. How does ECKO maintain product traceability for repeat orders?
Product drawings, winding data, bills of materials, inspection requirements and approved samples can be controlled under a defined product specification. Batch identification and test records help maintain consistency and support future repeat orders or engineering revisions.
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