3.3kVA Toroidal Transformer/Ring Power Transformer Step up Down Transformer

• Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio, UPS
• Phase: Single
• Core: Core-type Transformer
• Cooling Method: Dry-type Transformer
• Winding Type: Auto-transformer
• Certification: ISO9001-2000, UL, ISO9001, CCC
• Model NO.: Toroidal Transformer
• Usage: Single-phase Transformer, Rectifier Transformer, Power Transformer, UPS Transformer
• Frequency Characteristics: Low Frequency
• Shape of Core: Ring
• Brand: Okd
• Transformer for Equipment: Low Rise High Efficiency Toroidal Transformer
• Transformer Type: Toroidal/Ring Transformer
• Transformer Voltage: 12V 15V 24V 220V 230V
• Isolating Transformer: Waterproof Transformer
• Transformer Quality: High Quality Transformer
• Transport Package: Carton on Pallet
• Specification: 3.3K
• Trademark: Okerda Toroidal Transformer
• Origin: China
• HS Code: 8504319000
• Production Capacity: 300000PCS/Month

Product Description

3.3kva toroidal transformer/ring power transformer step up down transformer

3.3kva Toroidal transformer ( ring transformer) features:

• Basic data:
  • Capacity: 8VA - 60kVA
  • Phase: single
  • Input voltage: AC power with voltages of various countries
  • Output voltage: AC, according to customers' requirement
  • Frequency: 50/60Hz
  • Power factor: 0.9 to 0.98
  • Efficiency: 75 to 98%
  • Voltage Regulation: 12 - 3%
  • Output no-load loss: 0.5 to 10.0W
  • Temperature-rise: ≤85°C
  • Insulation class: B, 130°C; E, 120°C
• General features:
  • 100% QC from raw material to finished products
  • Good price-function ratio
  • Reliable performance and safety
  • Small volume and low weight
  • Low mechanical hum
  • Good shielding performance, low magnetic leakage
  • Dimension adjusted freely
  • Easy to mount and fasten
  • Excellent workmanship
• Testing items:
• • No-load test (no-load current, no-load voltage, no-load loss)
  • Load test (load voltage, temperature-rise)
  • Inductive voltage test
  • DC resistance test
  • Safety test
• Key parts:
  • Core:
    • Wound by high-quality cold grain silicon
    • Annealed by advanced vacuum annealing furnaces to improve electronic data
    • Any dimension from customer available
  • Wire: copper and aluminum available
  • Weld aluminum enamel wire well to save your cost 15 - 35%, based on our know-how technology
  • Thermal protector: cutoff and switch both available
• Application:
  • Electronic meter and apparatus
  • Cable TV and digital network
  • Electronic control
  • Medical Equipment
  • New electric power supply
  • Decorative illumination system
  • Monitoring and control equipment
• Installation: horizontal (non-conventional-type base plate), sunk, side type, bridge

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.

Production Line




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.

Packing&Shipping