Custom Low‑Frequency Transformer for Industrial Control Equipment

Overview

This case describes our cooperation with an industrial equipment OEM customer from Europe. The customer manufactures automation control cabinets for factory production lines, requiring stable 50/60Hz low‑frequency power transformers for control‑board power supply, voltage step‑down and electrical isolation. The original third‑party transformers suffered high temperature rise, inconsistent output voltage and frequent field failures, which brought high after‑sales maintenance costs to the customer. They turned to Zhixiangyuan Electronics for custom low‑frequency transformer redesign & mass production.

Customer Pain Points

1. Existing transformers had large voltage deviation under fluctuating mains input, affecting the stability of relay and sensor modules.
2. Excessive heating during long‑time continuous operation, short service life, high onsite failure rate.
3. The old supplier could not adjust dimensions and winding parameters to match their compact cabinet PCB layout.
4. Need full‑batch compliance with CE & RoHS, complete test reports for local market access.
5. Stable mass‑delivery capability, MOQ 1000pcs for each batch, flexible OEM support.

Our Solution

Based on customer’s input‑output voltage, VA rating, installation space and working environment requirements, our engineering team designed an EI‑core low‑frequency transformer solution:

1. Adopt high‑quality silicon‑steel laminated core and full‑copper winding, optimize winding structure to lower temperature rise and keep tight output voltage tolerance under full‑load conditionAlibaba.co....
2. Custom pin position, overall dimension and lead‑out way to fit customer’s existing PCB and cabinet structure, no need for customer hardware redesign.
3. Strict isolation insulation design, pass high‑voltage withstand test; comply with CE, RoHS requirements, provide full certification documents.
4. Complete sample verification: electrical performance test, temperature rise test, aging test before mass production.
5. Supported stable mass production at our Huizhou manufacturing base, ISO9001 quality control system for whole‑process traceability.

Project Outcomes & Customer Benefits

• Output voltage tolerance controlled within ±3%, stable performance under continuous 24‑hour operation; temperature rise greatly reduced, field failure rate dropped below 0.2%.
• Custom mechanical dimension perfectly matched customer equipment, no modification required on their end.
• All products passed CE & RoHS compliance, directly satisfied European market access requirements.
• On‑time batch delivery, reduced customer procurement cycle and after‑sales cost.
• Long‑term OEM partnership established, repeated order for multiple equipment models.

Customer Quote: “Zhixiangyuan’s engineering team understood our real‑world operating conditions well. The custom low‑frequency transformers solved our over‑heating and unstable‑voltage issues. We are satisfied with their sample validation, documentation support and mass‑production consistency.” — Procurement Manager, European Industrial Control OEM

Why Choose Zhixiangyuan for Low‑Frequency Transformers

• Source factory with over 10‑year experience in transformer & inductor manufacturing, Huizhou production lab base.
• Wide range of low‑frequency transformer series: EI‑type, toroidal type, covering 5VA‑500VA.
• Full custom service: input/output voltage, power, pin/outlet mode, size, insulation grade, OEM branding available.
• Certifications: ISO9001, CE, RoHS; every unit undergoes 100% electrical testing before shipment.
• MOQ: 1000pcs, support prototype samples for project validation.
• Serve industrial control, smart home, audio equipment, security, instrument & medical auxiliary equipment worldwide.

Ready to Get Your Custom Transformer Solution?

Send us your specification sheet (VA rating, input & output voltage, frequency, dimension limit, certification requirements). Our engineering team will reply with technical proposal and quotation within 24 hours.