P3126

ETALDOC 501/4

Page 3 of 4

January 2001

CONSTRUCTION

Dimensions shown are in millimetres (inches).

Geometric centres of outline and pin grid coincide within a tolerance circle of 0.6mmØ.

Windings may be used interchangeably as primary or secondary.

EN 50020 para 7.1.2 Type 1(a) (side-by-side on

separate slots of single piece moulding).

Fully vacuum encapsulated with hard epoxy resin

totally enclosing all internal parts.

Critical Distances

(a)

Distance through bobbin

dividing fillet.

≥1.0mm

(b)

Distance through bobbin

walls to conductive core

(Each winding).

≥0.5mm

(c)

Distance between highest

point of each winding

(including lead-outs) and

top of dividing fillet.

≥1.0mm

(d)

Distance between highest

point of each winding

(including lead-outs) to

conductive core through

encapsulant.

≥1.0mm

(e)

Distance through potting

box to conductive core.

≥0.7mm

(f)

Creepage/clearance (in

air).

≥11.0mm