TDC Series Transformer Distribution Cubicle

Blakley Electrics TDC series of Transformer Distribution Cubicle combining a double-wound transformer and double-pole MCB distribution arrangement housed in a robust sheet steel enclosure. The assembly provides a Reduced Low Voltage (RLV) supply in accordance with BS7671.

Enclosure
Wall mounting, sheet steel, seam welded enclosure, phosphate pre-treated prior to powder coating, shade Traffic Yellow. The transformer compartment is ventilated to IP23. The MCB compartment is non-vented and has a padlockable, side-hinged, gasketted door. Cable entry and exit is via a removable gland plate located in the underside of the enclosure.
Dimensions: 370 x 310 x 790 mm (W x D x H).

Rating
5000 VA single-phase, double-wound, continuously rated transformer, manufactured in accordance with BS EN 61558 Parts 1 & 2-4 with an earthed secondary winding.

Primary Isolator
Fitted a 20A DP MCB Type “D”.

Primary Volts
230 with tappings at 220, 240 and 250 volts.

Secondary Volts
110 CTE (in accordance with BS EN 61558 Part 2-23).

RCD Protection
The transformer output is protected by a 300mA 110V Type A RCCB to ensure compliance with BS7671 Regulation 411.8.3, which specifies a 5 second disconnection time for RLV circuits.

Distribution
Fitted 10 no. 16A DP MCBs to BS EN 60898 Type “C”.