Off-the-shelf distribution systems take control
A
Rittal product story
Edited by the Engineeringtalk editorial team
Jan 22, 2003
WH Good (Systems) selected Rittal as its supplier for three large control systems for a plant to extract oil from sunflower seeds.
WH Good (Systems), of Rossendale, Lancashire, specialises in the design and manufacture of control systems.
The company selected Rittal as its supplier for three large control systems for a plant to extract oil from sunflower seeds.
The installation is for Europa Crown which is supplying the factory in the southern region of Russia.
The first control suite, consisting of seven floor-standing bayed enclosures, controls the crushing section of the plant.
The process involves a large 500kW three-phase motor that is controlled using a 500kW Allen Bradley star/delta motor contactor unit.
As well as the crushing process, this control suite controls all relevant conveyor system motors used for the removal of waste products such as husks.
WH Good (Systems) contacted Rittal to assist it in designing the optimum solution for installing the power distribution busbar system and connection to a 3200A air circuit breaker.
Previously, the company would have used a third party to manufacture the busbar system and incur the inherent expense.
By using Rittal's new Maxi-PLS3200 power distribution solution, not only was it able to reduce its costs, it was also able to manufacture the entire system in-house and within timescales.
Maxi-PLS power distribution is a new unique system from Rittal that offers the system integrator the ability to design, cost and manufacture complete air circuit breaker (ACB) incoming and outgoing systems, without resorting to third parties.
These ACB systems can then be attached to either a NH slimline isolator system or standard Rittal enclosures.
The new Maxi-PLS solutions cover a wide range of ratings from 1250 to 3200A (low voltage), with certification to EN60439-1.
The selection guide and four simple questions make selecting the correct range of 'off-the-shelf' standard busbar products for Maxi-PLS very simple.
To select the right products all an engineer needs to answer is: whether the ACB is in the door or behind the door; whether the ACB withdrawable or fixed; the manufacturer of the ACB; and the current rating of the ACB.
From these simple questions all busbar parts can be selected.
One aspect that impressed WH Good (Systems) was the speed and ease that Maxi-PLS was installed by its engineers who had no prior training.
By using the simple free assembly instruction guide combined with the no bending, no drilling and no cutting concept of Maxi-PLS, the company was able to build its 3200A busbar solution within two working days.
Commenting on the project, David Hargreaves of WH Good said that Maxi-PLS was an excellent product giving quick assembly times from staff with no previous experience of Maxi-PLS3200, and peace of mind using a proven type tested system.
The second suite, consisting of five enclosures, is used to control and monitor the solvent extraction process.
This process is required to remove the remaining oil after crushing from the sunflower seed, thus ensuring optimum production.
This control suite houses 34 smaller motors ranging from 0.75 to 110kW.
To reduce the assembly time, the internal panel area and the risk of cabling errors, WH Good opted to use Rittal's market-leading SV power distribution solution.
The SV solution was again used in the third suite that also consists of five enclosures that control the winterising of the oil where any solids and fatty deposits are removed.
Rittal's SV power distribution products are used for power requirements ranging from 12 to 1600A.
SV is unique in its ability to offer designers the option of combining moulded circuit breakers, miniature circuit breakers, motor contactors, motor circuit breakers, bottle fuses and NH fused isolators with current ratings from just a couple of amps up to 630A all on one busbar system.
WH Good chose the SV system to mount Allen Bradley MCBs and contactors as well as Merlin Gerin MCCBs, thus reducing their internal panel area and the labour time required for wiring and assembly.
SV can be integrated with all the leading manufacturers of switchgear including Siemens, Allen Bradley and Telemecanique.
Both SV and Maxi-PSL power distribution solutions are supported by Rittal's busbar design software, SV-Plan, which provides, dxf drawings, busbar performance data and characteristics.
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