PHT series Points Heating Transformer, 10kVA, 230:110EF, AC, galvanized enclosure
Industry Specific Transformers
Points Heating Transformer, AC, 10 way
Type Ref: PHT/10/DUAL/PJ/230V/110VAC/F10/GALV
P.O.A
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Network Rail approved transformer for AC Points Heating. General Arrangement drawing B35085 and Wiring Diagram WD3159 refer. The specification has been updated in accordance with Network Rail Standard NR-L2-ELP-40045.
Enclosure
Floor fixing with hot dip galvanized finish to BS 729. The enclosure has a padlockable lid, a petroleum jelly filled transformer tank and a terminal chamber that incorporates condensation drain holes, rated at IP23. The transformer tank and terminal chamber are fully segregated. The enclosure incorporates a brass 16mm traction earth stud.
Rating
10 kVA single-phase, double-wound, continuously rated, manufactured in accordance with BS EN 61558 Parts 1 and 4. The transformer incorporates dual secondary windings, each rated at 5 kVA.
The transformer is of low inrush design with a magnetising current that is less than 5 times full load during the first cycle following energisation.
Incoming Terminals
Fitted with incoming terminals to accommodate 35mm2 conductors. A 25mm gland hole is also incorporated.
Primary Isolator
Fitted with a 63A DP isolator to BS EN 60497-3, padlockable “OFF”. The padlocking of the isolator dolly cover is independent to the padlocking of the lid.
Primary Volts
230 with tappings at +2.5%, -2.5%, -5%, -7.5%, -10%
Secondary Volts
2 no. 110V earth free windings, each rated at 5 kVA AC
Distribution
Each winding feeds 4 no. sets of 12A DP anti-surge fusing and 1 no. set of 2A DP anti-surge fusing (8 no. sets of 12A and 2 no. sets of 2A DP fusing in total). The terminal chamber is punched with 12 no. 20mm and 2 no. 32mm gland holes, suitably blanked.
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On Application
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