New MCC from Rittal gives fast delivery

Close Engineering Services, with 56 years experience in the electricity supply business, chose the new Rittal TS 8 Motor Control Centre system on a recent project, where fast delivery was needed

Close Engineering Services, based in Tadcaster, have 56 years experience in the electricity supply business making them fully conversant with the demanding and stringent requirements of this type of industry.

Their engineering capabilities and workshop facilities also make them ideal for numerous other industrial electrical projects.

Having recently been notified that a new Rittal TS 8 Motor Control Centre (MCC) system had just been launched, when one of their customers approached them for an MCC, Close Engineering decided to contact enclosure specialist Rittal, based in Hellaby, South Yorkshire.

The MCC was required for use in the electrical supply industry to enable the distribution of substation supplies from 100 amps to 250 amps.

The specification called for a Form 4b, type 7, 3 phase, neutral and earth system.

The fault rating was 31.5 kA for 1 second and the ingress protection rating was IP 54.

Cable entry was to be from the bottom with cable access from the front, and the system had to be easily extendable in the future.

Already familiar with the Rittal TS 8 range of enclosures, Close Engineering knew they would be readily available ex-stock, which was a crucial factor as their customer had specified that the delivery was of paramount importance.

With standard TS 8 frames the MCC could easily and cost effectively be extended.

With Motor Control Centres it is critical that incoming cables are brought into large cable chambers.

The Rittal MCC has a generously sized 400mm wide chamber that allows plenty of manoeuvrability for the contractor on site.

The adjustable mounting plates allow easy and rapid location due to the innovative sliding rail system.

A choice of compartment height size ranging from 200mm to 2000mm means that the MCC, as with the TS 8, is a truly flexible solution.

To assist Close Engineering, Rittal mounted the fuse switches in the compartments prior to delivery.

The MCC was delivered into the customer fully bayed together with the copper busbar system already installed.

All MCCBs were mounted into the compartments and handles installed on the doors.

The only work required by the customer was to wire up the MCCBs.

A further consideration was for Rittal to manufacture and connect the copper bar from the 'dead side' and the incoming side of the main protective device, which proved to be cost effective as well as reducing timescales.

The busbar systems are manufactured from hard drawn copper and the MCC offers safe operation under fault conditions of up to 50kA for 1 second.

With a separation that is available of up to form 4b Type 7 (BS EN 60439-1) this achieves a well-engineered cost effective solution.

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