Technical data print transformers


Construction
T.O = open, vacuum varnished
T.V = potted in a housing


Temperature class
T40/B, on request insulation class F (155°C) for type T.O


Protective class
IP00 (for mounting in an appliance)


Phases
1


Frequency
48 Hz up to 400 Hz, other frequencies than 50 Hz lead to another power at the same type size


Safety standards VDE/SEV
open and potted: EN 61558


Safety standards UL/CSA
on request UL/CSA materials or UL-approval


Test voltages
EN 61558-1: 2500 V pri - sec
EN 61558-2--/4: 4000 V pri - sec


Resistance to short-circuiting
conditionally short circuit protected with
- PTC
- temperature fuse
- temperature switch
- mini fuse
in other case no resistance to short-circuiting


Bobbin
DIN 41302, 1 or 2 chamber version
Material: Polyamid 6 gf class B = 130°C with UL approval UL 94 HB
Pin-grid has to be defined at the order


Insulants
Polyester class B = 130°C with UL approval UL 94 V0


Copper wire
Polyurethane mod. class F = 155°C with UL approval
min. 0,04 mm, max. flat copper ca. 500 qmm


Screening
made of Cu-foil, reduces the max. power


Transformer core lamination
conform DIN 41302
M530-50A, 0,5 mm thick (1,0 W/kg losses at 1,7 T) or
M111-35N, 0,35 mm thick (1,1 W/kg losses at 1,5 T)


Mounting
by plugging into the printed circuit board (Print)


Voltages
min. 0,1 V
max. depends on the type size, at EI 78 and vacuum potting: 5000 V


Tappings
possible


Current
min. 0 A
max. depends on the type size


Mechanic tolerances
Tolerance of print transformers from pin row to pin row +/- 0,5 mm


Printed circuit board drills

Platinenbohrungen


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