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Technical data of one-phase 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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Temperatureclass
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T40/B
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on request class F (155°C)
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Protective class
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IP00
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Phases
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1
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Frequency
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48 Hz up to 400 Hz
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if there’s another frequency than 50 Hz, the transformer has 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 only 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 versions
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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 HB
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Insulation material
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Polyester 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: flat copper with ca. 500 qmm
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Screening
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made of Cu-foil, decreases the max. power
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Transformer core lamination
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conform to DIN 41302
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M530-50A, 0,5 mm thick
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(2,3 W/kg losses at 1,0 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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Terminals
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with solder lugs, above EI 48
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free wires
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stranded flexible wires
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terminals, above Ei 60
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flat plugs
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plugs above EI 48
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cable eyes
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mounting on a printed circuit board
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Mounting
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base angle
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distance bolts
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holes in the core
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mounting covers
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Voltage
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min: 0,1 V
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max: depends on the size
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for EI 78 and vacuum potting: 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 the size
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for EI 150 approx. 500 A
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