Delmatic Plays a Key Role in Lighting Kings Cross New Western Concourse

kings Cross concourseA sophisticated Delmatic lighting management system with customised features is providing energy-efficient, addressable control of lighting for the recently unveiled Western Concourse at Kings Cross in London. Delmatic worked closely with consulting engineers Arup in the design of the system.

King's Cross Station is one of the busiest transport hubs in London and is undergoing major redevelopment as part of one of the largest regeneration projects in Europe. Topped by a dramatic wave-form canopy roof, the new Western Concourse has tripled the space available for circulation at Kings Cross and is a departures space only, with arriving visitors continuing to exit via the 1960s concourse (due to be replaced with a new square by Autumn 2013). As such, the station is an integral part of a ‘transport super-hub’ with links to the recently upgraded St Pancras International station, London Underground and buses.

The Delmatic system controls lighting throughout the project, including front-of-house and back-of-house areas, as well as decorative concourse and façade lighting. The lighting is configured into a variety of modes or scenes which are activated automatically at scheduled times and the complete system is managed and monitored across the IP network using animated graphical software housed in the station’s central control room.

“Energy efficiency was a vital element in the design of the lighting and the controls play a key role in achieving this,” explained Arup’s Simon King. “For example, the daylight control is quite complex because sunlight enters the concourse at different angles at different times of day with some variation throughout the year – and it is essential that design illuminance levels are maintained for safety,” he added.

To address this, the light levels and orientation are measured by a solar controller mounted outside the station, with additional feedback from photocells within the concourse space. The lighting is then controlled in relation to daylight levels.

“The general lighting in the space is provided by metal halide light sources which can’t be dimmed efficiently so we have opted for on/off switching. Maximum flexibility is achieved by controlling the lighting in banks so that individual luminaires can be switched off. In this way we have the options of having 25%, 50%, 75% or 100% of the fittings switched on at any one time,” Simon King

The Delmatic system also controls the emergency lighting and includes comprehensive integration with the central battery system. Delmatic developed custom hold-off modules and software for the project to accommodate the start-up delays of discharge lighting following an emergency condition.

The Delmatic lighting control modules used in the project are equipped with mechanically-latched relays which, for safety reasons, remain in their last state in the event of controls failure, and incorporate local manual override functions. All system hardware incorporates distributed intelligence so that, in the event of network failure, local operations continue to function without reliance on the network PC or routers.

“We have worked with Delmatic on previous projects so we knew we could rely on the products and the support. With Delmatic you know that if there is an issue they will respond promptly to ensure swift resolution,” Simon King concluded.


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