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Technical data print transformers
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Type size
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T.O = open, vacuum varnished
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T.V = potted in a housing
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Temperature class
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T40/B
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on request temperature class F (155°C)
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for type T.O possible
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Protective class
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IP00
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Phasen
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1
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Frequency
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48 Hz up to 400 Hz
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for other frequencies than 50 Hz, we will get another power at the same size
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Standards VDE/SEV
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open: EN 61558
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Potted: EN 61558
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standards UL/CSA
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on request UL/CSA materials or UL-approval
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Test voltage
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EN 61558-1: 2500 V pri -sec
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EN 61558-2-1/4: 4000 V pri -sec
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Short-circuit strength
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Short-circuit proof up to 2,4 VA
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Partly short-circuit proof with
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- PTC
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- temperature fuse
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- temperature switch
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- micro fuse
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in other cases: not short-circuit proof
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Bobbin
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DIN 41302, 1 o. 2 chamber version
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Material:
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Polyamid 6 gf class B = 130°C
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with UL-approval UL 94 V2
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Pin-grid has to be given at the order
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Insulation materials
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Polyester (Mylar) class B = 130°C
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with UL-approval UL 94 V0
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Copper wire
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Polyurethane mod. class F = 155°C
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with UL-approval
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min: 0,04 mm
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max: flatcopper with approx. 500 qmm
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Screen winding
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made of Cu-foil, decreases the max. power
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Transformer core lamination
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conform toDIN 41302
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M530-50A, 0,5 mm thick
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(2,3 W/kg losses at1,0 T) or
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M111-35N, 0,35 mm thick
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(1,1 W/kg losses at 1,5 T)
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Mounting
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by the printed circuit board
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Voltage
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min: 0,1 V
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max: depends on size
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for EI 78 and vacuum potted: 5000 V
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Tappings
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possible
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Current
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min: 0 A
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max: depends on size
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Mechanical tolerances
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Tolerance of print transformers from pin row to pin row: +- 0,5 mm
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Printed circuit board drills
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