AMVECO ADVANTAGE

 
 
UNMATCHED QUALITY & UNPARALLELED SERVICE
Power system design engineers have come to recognize AMVECO as the leading manufacturer of custom toroidal power transformers and inductors. Over the years since 1982, we have built a reputation for excellence by focusing on design engineering state-of-the-art production capabilities and customer support services. Our quality management system has been ISO 9001 certified since 1992. When you select AMVECO for your power transformer needs you acquire a team of experienced professionals that offer assistance from design to delivery and beyond. One simple fact verifies our quality claims: our customers stay with us year after year and continue to trust us with their new product needs. In addition to Class A insulation system, Amveco offers UL recognized Class B (130°C), Class F (155°C) and Class H (180°C).

Electrostatic Shield (Customer Specified)
  • Reduces capacitive coupling between primary and seondary windings
  • Copper foil (2 mil) laminated between polyester film and tape
  • Tightly wound over primary insulation
Primary to Secondary Insulation
  • Polyester film-Class B (130°C)
  • Four layers minimum between windings
  • Meets test requirements of 4000V RMS for 1 minute between primary and secondary

Windings

  • Base coat of Polyester. Heavy topcoat of amide imide (200°C)
  • Wound uniformly over entire core
  • Better heat dissipation
  • Windings configured for minimum flux leakage
  • Low voltage maintained between adjacent turns

Thermal Protection (Customer Specified)

  • Usually in primary cirucuit
  • Normally closed-auto reset opens at high temperature
  • One-shot fuse also available
  • UL, CSA, VDE listed components
Core Insulation
  • All cores: 100% surface covereage of four layers of 2 mil polyester film Class B (130°C)
    unless core caps specified.
  • Protects, insulates and cushions the core from windings and reduces vibration

Wire Leads

  • Choice of two types of leads connected to windings: *Self leads: windings wires exteded through sleeving for connection to circuit. Standard: Class A (105°C) *Stranded wire leads (105°C) - Class H (180°C)
  • Each lead anchored to toroid body with high tensile strength tape to withstand severe pull test Primary leads covered with second layer of sleeving - double insulation is standard on all units

Center Hole Potting

  • Thermoplastic material
  • High mounted precision
  • Threaded insert or press fitted stud is optional
  • Thermally conductive compound available

Outer Insulation

  • Tape wound type: Standard two layers polyester film Class B (130°C)
  • Magnetic enclosures optional

Magnetic shield (Customer Specified)

  • Multiple layers of grain oreinted silicon steel tightly wound around the toroid's circumference
  • Fixed in place by outer insulation
Core
  • Cores are manufactured and annealed in-house, under controlled conditions
  • Continuous tightly wound grain oriented silicon steels--no airgaps, no mechanical noise
  • Lathed radial corners--compact design, most efficient use of materials
  • No core gaps necessary

AMVECO's unique method to protect the wire from the sharp corners of the core during the winding operation permits unlimited choice of core size to best meet the customer's available space. Other methods include use of plastic end caps or dipping the core in epoxy. Amveco can offer these methods too, if preferred by the customer.