20va - 500va High Efficiency Step up Down Lighting Transformer Toroidal
Our Advantages:
1. 20 years experience in transformer and inductor manufacturing;
2. Scientific management system, strong technical team, and strict quality control system;
3. RoHS,CE,TUV and UL certified;
4. OEM & ODM;
5. Competitive price,in time delivery and perfect after-service online.
Features:
1) Frequency: 50Hz/60Hz
2) High efficiency Lighting Range
3) Low no-load losses
4) Low mechanical hum
5) Low magnetic leakage
7) High efficiency
Applications:
1. Used for UPS;
2. Inverter Welding Machine;
3. High Power Charger Power Supply;
4. Electric Vehicle Charging Equipment;
5. High efficiency Power Supply;
6. Switching Power Supply;
7. LED Power Supply.
PARAMETER
Winding Process
Testing process
1. No-load test (included no-load voltage, no load current and no load loss);
2. Inductive voltage test;
3. Load test (load voltage and temperature rise;
4. Temperature rise test;
5. Insulated resistance;
6. Hi-pot test;
7. Leakage inductance test;
8. DC resistance test;
9. Surface inspection.
Factory Line
Audited Supplier 
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