e65 high frequency transformer

- May 29, 2018-

  1.        Need change and correct the 2 transformer's primary and second turning way? 

YES

And also change the cable out position for primary. As picture1

2.       We will change the sleeve position as your yesterday video? winding a whole circle?

YES you should change the sleeve position at least my video. But if its possible, you can cover the whole wire as picture 1 our transformer (left side).

 

         something else need change?

            Your some samples isolation paper was 0.25mm x 2 spin  between primary and secondary. It must be 0.25mm x 3 spin

Of course we need samples to test them after your price. It is what it should be.

Our current supplier is ok and their transformer good also. But It is about the risk. We need to share the order.

Have you seen before or can you find that kind of bobbin for E65 transformer?

Maybe we can change the bobbin with screw type.


 

e65 bobbin.jpg

See Coil Former page)

There should be insulation between N1 and N2 windings with following properties;

Insulation paper

MUST BE UL CERTIFIED

Winding Terminal StartTerminal Finish The transformer has to be varnished thorougly

N1 P1 P2 Varnish must be Class H (180 °C)

N2 S1 S2

Length of P1 at the end of the winding: 22 cm

Length of P2 at the end of the winding: 10 cm

Length of S1 at the end of the winding: 1,5 cm

Length of S2 at the end of the winding: 12 cm

(See Extra Winding Length page as an example)

N1-N2 3750 V AC 1 mA 60 sec.

N1-Core 1875 V AC 1 mA 60 sec.

N2-Core 1875 V AC 1 mA 60 sec.

High Voltage Test / Withstanding Test

3 layers of insulation paper with each having thickness of 0,35 mm

(in total 0,35 mm x 3) (See Insulation Paper page)

Class H (180°C) resistant

Varnish

Winding Properties Insulation Overwinding

# of turns

N1 Litz Wire 140 x AWG 32 16

2,02 mH

Tolerance

N2 Litz Wire (140 x 3) x AWG 32

197 μH

5

Material: N87

Inductance Measurement

Al: 7900 nH

EPCOS reference code: B66387G0000X187

Inductance

NO GAP

Class H yellow tape

± 10 %

Alternative E core can be used

if the type of material and

Al value matches

Mechanical Drawing

Winding Wire Type Wire Specifications

Scheme Winding Order and Type

TRANSFORMER SPECIFICATIONS SHEET

ASKAYNAK

Air Gap

IDENTITY OF THE PRODUCT: ASKTRF65320165