Industry Specific Transformers

Points Heating Transformer, DC

Type Ref: PHT/10/DUAL/PJ/230V/99VDC/F10/SS

10kVA icon 1 phase icon DC icon

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PHT series Points Heating Transformer, 10kVA, 230:99EF, DC, stainless steel enclosure (316L)

Network Rail approved transformer rectifier for DC Points Heating. General Arrangement drawing B35240 and Wiring Diagram WD3172 refer. The specification has been updated in accordance with Network Rail Standard NR-L2-ELP-40045.

Enclosure
Fabricated from stainless steel grade 316L 2B, floor fixing. 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 and fitted with a single phase bridge rectifier.
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 primary isolator is provided with a padlockable dolly cover. The padlocking of the isolator dolly cover is independent to the padlocking of the lid.

Primary Volts
230 with tappings at +5%, +2.5%, -2.5%, -5%, -7.5%, -10%.

Output Volts
2 no. 99V DC (mean) earth free outputs each designed to provide 40.96A DC (mean) and fitted with screw-termination bridge rectifiers (2kV rectifier insulation voltage).

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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This product cannot currently be purchased online. Please contact Blakley Electrics Customer Services on 0333 188 0284 to discuss your requirements and for pricing and lead times.