TH Series Transformer, LUL Approved

Blakley Electrics TH series transformer assembly with integral MCB protection. The product is approved for installation on LUL premises, including defined Section 12 locations, and utilises a double-wound transformer with dual 55V secondary windings to LUL specification. The assembly provides a 110 volt Reduced Low Voltage Supply (RLV) to BS 7671.

Enclosure
The enclosure is non-vented to IP55 and incorporates wall and floor mounting brackets. It is of robust construction and is fabricated from mild steel, seam welded with a hot dip galvanized finish to BS 729. A top hinged, gasketted, metal dolly cover with quick release fastener protects the MCB and maintains the IP55 rating when fastened.

Rating
Continuously rated at 6kVA the transformer is manufactured in accordance with BS EN 61558 Parts 1 and 4 and is fabricated from materials with a Class F insulation rating.

Primary Volts
240 volts with off-load tappings at 220 and 260 volts.

Secondary Volts
The transformer will provide a line to line output of 110 volts and a line to earth voltage of 55 volts, and is in accordance with LUL drawing 2-9569-L20163 Rev 5. The transformer has dual 55 volt output windings with two earth connections. The transformer will be supplied with the main earth bond connected from B2 to earth reference A1. The connection from B1 to an independent earth is to be made by the installer at the time of installation.

Distribution
Fitted with 2 no. Schneider Electric 32A DP Type ‘C’ MCBs.

A wiring diagram is provided with each transformer.