Transformers made to specification are common item sourced via Supply Concepts from China. We have a long standing relationship with number of Chinese transformer manufacturers specializing in:
- IE Type transformers
- Toroidal (toroid) transformers
- High Frequency transformers used in Switch Mode Power Supplies
- Chokes and inductors
When you need a Transformer manufacturer that offers 'value-add' service, which includes manufacturing wiring harness, assembly of made transformers on to PCB or in to the enclosure and doing some base wiring, contact us.We have close relationships with power transformer manufacturers, current transformers manufacturers, electrical transformers manufacturers and several toroidal transformer manufacturer facilities.
Below is a short summary of different types of transformers and there’s benefits.
EE and EI Transformers:
- A wide range of single or multiple voltages, currents or power
- Low idle losses
- Excellent heat dissipation
ER, ETD and PQ Transformers:
- Provide an optimized ratio of volume to winding area and surface area
- Good heat dissipation.
- High power output
- Low idle losses
EFD, EP and EPC type of Transformers offer:
- Wide range of power rating.
- Excellent magnetic shielding
- Good heat dissipation.
- Low idle losses
POT and RM types of Transformers:
- Good magnetic shielding
- Small distributed capacitance
- Can be supplied gapped with tuner
- Well-suited for high Q inductors & tuned transformers.
Toroid / Toroidal Transformers:
- Can be made of any size
- Wide range of power output
- Low exterior magnetic field
-Wide range of input/output voltages available
- Low idle losses
Wire type Transformer:
- Wide range of power output
- Good heat dissipation
- Low idle losses
High Standards Guaranteed
Supply Concepts International has a longstanding relationship with testing authorities in both Australia and China. This ensures that all products supplied by manufacturers comply with current electrical safety standards (AS/NZS) for a variety of applications. On behalf of its customers, PA International has also worked with various testing authorities to assist customers in obtaining electrical approvals of their products.
We’ll manage the relationship with each power transformer manufacturer, current transformer manufacturer and the electrical transformer manufacturers performing transformer manufacturing in China for you.
Points to consider when ordering Transformers
Approvals
Custom transformers can be designed to the applicable sections of other standards, such as: UL, IEC, VDE, CSA, AS/NZS and others.
Insulation
Unless specified otherwise, transformers are made to meet Class B (130°C). However, we use four UL approved insulation classes, which may be specified as required, up to class H (180C).
Temperature Rise
Transformer temperature rise may be specified as required in given operating ambient. The basic design guideline is 60°C. With a Class B (130°C) insulation system, this would allow operation in a maximum 70°C ambient.
Inputs
Most common input voltage for transformers is 220VAC. We can design and manufacture transformers with other voltage inputs including multy-voltage tapings.
Line Frequency
Standard transformers are designed to operate at 50 or 60 Hz. Grain oriented steel cores can be used at frequencies up to 2 kHz. For higher frequencies we use such materials as ferrite, powdered metal and other composites.
Power
Power requirements up to 25 kVA per phase (75 kVA for three phase transformers).
Outputs
The output loading of the transformer may be specified in either of two ways:
-AC (RMS) voltage and current (IAC) or power (VA) and duty cycle for each secondary output.
-DC load parameters. We can engineer the optimum transformer from your specific DC load data. This data should include: DC voltage, current, rectifier type (full wave, full wave bridge, etc.) and specification, capacitor type and value, regulator type and specifications, and special load characteristics, including duty cycle. Please supply a simple schematic, if possible. With this information, we will determine the optimum secondary AC specifications for each output.
Mounting
In addition to the standard potted center toroidal transformer and mounting disk with washers, we can supply custom toroids with threaded inserts, bushings, or studs pressed into a potted center; special molded bases; complete molded enclosures; printed circuit mount cases or custom sheet metal brackets and enclosures.
Leads
Leads may be specified as solid (stripped and/or tinned) or stranded (with special stranding ratios, stripped and/or terminated). Insulation layers and type may be specified (Teflon, PVC, single, double, etc.). Lengths of transformer leads are required.
Thermal Protection
Customer specified temperature and type: self resetting switch or fuse. We use specially packaged (for high mechanical stress) internationally approved devices in our transformers.
Electrostatic Screen
Customer specified. To reduce capacitive coupling, and/or create a physical barrier insert (known as safety screen), between primary and secondary or between specified secondary’s windings of transformer. Copper foil laminated between insulation provides 100% coverage.
Magnetic Shield
Toroidal transformers radiate about 1/10 the magnetic field of standard EI transformers, but to further attenuate stray magnetic fields in very sensitive applications, such as in close proximity to a CRT, an additional magnetic shield may be called for. Magnetic shields consist of multiple layers of grain oriented silicon steel, or a high nickel content alloy, such as MU-Metal, Magnifier 79, etc.., laminated between insulation. Wrapped around circumference of transformer. Disks are also available for use within potted assemblies.
Mechanical
Height and diameter of the electrical transformers made to suit, as long as the core cross section is held constant.