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Manufacturer 550VA Toroidal Transformer ,Power Audio Isolation Transformer .

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US$ 25 - 27 MOQ: 1 Piece
Key Specifications
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Place of Origin:
Zhejiang, China
Brand Name:
YOMIN
Model Number:
DH-550
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Yueqing Yomin Electric Co., Ltd.
Payment & Shipping
Payment Methods:
Port of Shipment:
Ningbo or Shanghai
Delivery Detail:
Delivery time depends on order quantity.

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Place of Origin Zhejiang, China
Brand Name YOMIN
Model Number DH-550
Usage Power
Phase Single
Coil Structure Toroidal
Coil Number Autotransformer

550VA Toroidal Transformer   Model: DH-550 

Manufacturer 550VA Toroidal Transformer ,Power Audio Isolation Transformer .

Product Overview

Selection of Toroidal Transformer

Toroidal Transformers offer many advantages over standard laminated power

 

transformers. Toroidals provide quiet, efficient operation with very low stray magnetic

 

fields. Their small size and weight support a package that is easy to design into any

 

application.

Manufacturer 550VA Toroidal Transformer ,Power Audio Isolation Transformer .

Advantages of Toroidal Transformer:

1. A toroidal transformer weighs about half as much as conventional transformer with the

 

same capacity and heat rise. The main materials used in transformer are copper and steel,

 

both of which are getting scarcer with cost increases as a consequence.

 

2. No impregnation is needed to keep the laminates quiet so this potential environmental

 

hazard is avoided.

 

3. The toroidal transformer fits into a smaller space, which allows chassis plates and

 

enclosures to be smaller with less material used.

 

How to find VA for Transformers

Volt amps (VA) is the effective power rating for a transformer. In the perfect transformer, the

 

voltage and current (combined) applied at the primary will exactly equal the voltage and

 

current (combined) on the secondary(s).

 

Efficiency is measure of a transformer’s ability to delivery the input power to the load.

 

Efficiency is expressed as a percent by:

 

% = ( PO / PI ) X 100 (Where: PO = Output power, PI = Input power, % = Efficiency)

 

VA Calculation

1. Read the transformer’s secondary winding rating (printed or tagged on the transformer

 

case). This should give a rating such as 5V, 500mA.

 

Multiply the voltage times the current to receive the VA.

 

Example: 5V times 500mA (or 0.5A) equals 2.5VA

 

2. Convert the secondary winding VA value to the primary winding VA rating as the

 

equation VA (Primary) equals VA (Secondary) or VA (p) = VA(s)

 

For example of a 2.5VA secondary, if the primary voltage is 120V the current will be A (p) =

 

VA(s) / V(p). Giving A(p) = 2.5 / 120 = 0.020833 (roughly 21mA).

 

This is the calculation for a single input winding/single output winding transformer.

 

3. Add the separate VA ratings for a transformer with multiple secondary windings.

 

For secondary winding 1 = 5VA at 500mA

 

Secondary winding 2 = 24V at 100mA

 

Total Secondary VA = ( 5 X 0.5 ) + ( 24 X 0.1 ) = 4.9VA

 

Primary VA will still equal the total secondary VA.

Specifications

Manufacturer 550VA Toroidal Transformer ,Power Audio Isolation Transformer .

 

  • Capacity..............................................................................550VA
  • Frequency...........................................................................50/60Hz
  • Max. Temperature...............................................................60℃
  • Temperature Class.............................................................Class B (130℃)
  • Voltage Combination.........................................................Pls. see selection form.
  • Winding Material................................................................100% Copper
  • Mounting Metal Disk..........................................................Provided
  • Rubber Gasket...................................................................Provided
  • Standards........................................................VDE0550, IEC204-1, IEC61588, EC439
  • Sample Service..................................................................Pay to Provide
  • Quality Assurance.............................................................24 months
  • Item Condition....................................................................Brand-New
Selection Form
Item Capacity Static Current Efficiency

Voltage

Combination

Case

Qty.
Model (VA) (mA) (%) Primary (V)/Secondary (V) (Pcs)
DH-50 50 10 90

230/24;220/24;230/36;

220/36;440/230;230/12; 130-240/15-240;115/24

 24
DH-100 100 15 92 24
DH-150 150 20 93 24
DH-200 200 30 94 24
DH-250 250 35 94 18
DH-300 300 40 94 18
DH-350 350 45 95 18
DH-400 400 50 95 18
DH-450 450 55 95 18
DH-500 500 55 95 18
DH-550 550 55 95 18
DH-600 600 55 95 18
DH-700 700 60 95 12
DH-800 800 65 95 12
DH-1000 1000 75 95 12

Note: 

Please mention the voltage Combination when ordering. Other else multiple volage combination upon request.

Dimension

 Manufacturer 550VA Toroidal Transformer ,Power Audio Isolation Transformer .

 

Manufacturer 550VA Toroidal Transformer ,Power Audio Isolation Transformer .

NB: For Custom design, please contact our sales team.

Company Information

 Manufacturer 550VA Toroidal Transformer ,Power Audio Isolation Transformer .Manufacturer 550VA Toroidal Transformer ,Power Audio Isolation Transformer .Manufacturer 550VA Toroidal Transformer ,Power Audio Isolation Transformer .Manufacturer 550VA Toroidal Transformer ,Power Audio Isolation Transformer .Manufacturer 550VA Toroidal Transformer ,Power Audio Isolation Transformer .

 Manufacturer 550VA Toroidal Transformer ,Power Audio Isolation Transformer .

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Yueqing Yomin Electric Co., Ltd.
Business Type
Manufacturer, Trading Company
Year Established
2012
Factory Size
50,000-100,000 square meters
Total Employees
501 - 1000 People
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