Multi-tapped Secondary, Chassis Mount.
230 VAC primary, 3.2A/4A/10A multi-tapped secondary voltage
Chassis mounting frame construction transformer with multi-tapped secondary voltage designed
according to the following specifications.
50 - 1000 VA
4 kV RMS
BS3535 and EN 60 742
Chassis mounting frame construction low voltage mains transformers with a single 230 VAC 50/60Hz primary
winding and multi-tapped secondary winding. Suitable for a wide range of applications requiring selected
- Double section bobbin construction
- Fully shrouded bobbins
- Full varnish impregnation
- Multi-hole frame fixing
- Solder tag terminations
- 100% electrical and flash tested
||regulation % typ.
||*max. output current (A)
||output voltage tappings VAC
|* Maximum current through any part of the winding
||Off load voltage - full load voltage
Off load voltage
transformer current ratings
When a transformer is used to supply any load other than a pure resistive one, it is necessary to
derate its specified AC current rating to prevent overload. These current derating factors are
shown below each circuit and relate the transformer ac current rating to the DC load current.
Note: Where a transformer has a VA rating, this is the product of the secondary AC voltage and
the secondary AC current.
DC output voltage of circuits
Relationships between VDC and VAC shown below each rectifier circuit do not include losses. The
transformer’s ac output voltage is specified at the full load current - off load, the voltage
will rise in accordance with the regulation specified for that particular transformer.
For full-wave circuits, the average current per rectifier is 0.5×IDC. For half-wave circuits
it equals IDC. For all circuits each rectifier should have a VRRM rating in excess
of 1.4×VAC except the half wave capacitor input filter circuit which requires a rating in
excess of 2.8×VAC
Relationships and circuits shown above are intended as a guide and assume no circuit
losses. For low dc voltages allowance should be made for the diode voltage drop.