Glasgow Busbar Chamber System

Switch & control gear enclosures

Eaton’s busbar chamber system is designed to provide either compact, wall-mounting installations or – by using optional pedestal sets – easily assembled switchboards. Every facility is provided to enable Eaton’s switchgear and distribution gear to be mounted easily and economically to busbar chambers which can be applied either to a suitable load-bearing vertical surface; or, by means of a pedestal set, affixed to a vertical surface which need not be load-bearing.

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Core features

Busbar chambers

Produced in 100, 200, 400, 630 and 800 Amp ratings and in four nominal lengths
100, 200 and 400 Amp units are available in all four sizes; 630 and 800 Amp ratings are offered in the three longest units only
All units in the range share the same height and depth dimensions
Detachable end plates enable all units to be extended by coupling to a second busbar chamber using extension sets
Complete mounting kits, including templates, are available for mounting all Exel and Glasgow switchgear
Each unit can be coupled to any other Eaton chamber in the range of the same rating by removing adjacent end plates and using the appropriate busbar chamber extension set. These comprise a set of four copper links complete with all necessary clamps, washers and fasteners plus fitting instructions.

Pedestal and back-plate sets

Pedestal and back-plate sets are available to accommodate 1800, 1350 and 900mm nominal length busbar chambers in all ratings.
These sets enable complete industrial switchboards to be built up easily and at competitive cost to produce a ready-painted unit of pleasing appearance.
Each set comprises two pedestal sideplates and feet plus a pedestal backplate, all-ready drilled; together with all necessary fastenings and spacers for floor-mounting bolts.
Components are of rust-protected sheet steel with light grey paint finish.

Connection sets for Glasgow fuse-switch-disconnectors & switch-disconnectors

Cable clamps covering all ratings are available for switchgear up to 200A.
For connecting Glasgow units of 160A and above, solid copper connection sets are recommended as cost effective and convenient. These comprise pre-formed, insulated links in 4-pole sets supplied with all necessary clamps and fasteners. The appropriate switchgear mounting set (41, 51 or 61 BBMS) must be used with connection sets for 160–800A Glasgow units

Connection sets for Glasgow fuse-switch-disconnectors & switch-disconnectors

Cable clamps covering all ratings are available for switchgear up to 200A. For connecting Glasgow units of 160A and above, solid copper connection sets are recommended as cost effective and convenient. These comprise pre-formed, insulated links in 4-pole sets supplied with all necessary clamps and fasteners. The appropriate switchgear mounting set (41, 51 or 61 BBMS) must be used with connection sets for 160–800A Glasgow units.

Busbar cable clamps and sockets

Incoming main cable clamps or sockets are not supplied due to the wide range which would be necessary to meet all requirements. Busbar cable clamps comprise plated brass U-clamps and steel slides with all bolts and washers. They are suitable for the connection of small solid or stranded copper conductors and also aluminium conductors using a barrier grease. Busbar cable sockets are plated brass castings complete with clamps and fixings, suitable for the termination of either copper or aluminium conductors. Both clamps and sockets allow for clamping on the busbars without drilling. For cabling direct on to busbars of 630– 800A rating a special cable extension is required which can be made to special order.

Switchgear mounting sets

Available for all ratings of Exel switch-disconnectors/switch-disconnector fuses and Glasgow fuse-switch disconnectors and switch disconnectors enabling these units to be mounted simply and efficiently either above or below the busbar chamber. Each mounting set comprises a template with instructions for machining the top/bottom plate of the busbar chamber; clamping channels, ready pierced for fasteners; all necessary fastenings; and, for Glasgow units, insulated shields and switch filler plates where appropriate.

Specifications

Busbar chambers

Fabricated from rust-protected sheet steel with a light grey paint finish.
Type tested to BS EN 61439 with a rated conditional short circuit current rating of 63kA at Ue 550V and a rated short-time withstand current Icw 20 times nominal rated current for one second.
They are designed for use in factory-built assemblies to BS EN 61439.
All chambers are subjected to an on-line dielectric test unit which provides a high voltage test between poles; and from poles to earth
Earth continuity is also tested
Rated insulation voltage 660V

Operational performance

In accordance with BS EN 60947-3 all ratings have been tested to values specified below:

Description	Cycles
Operating cycles without current	8500
Operating cycles at rated current	1500
	Total: 10000

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