Case Studies

Power Generation - S&I Limited

Switchgear and Instrumentation Ltd, part of the Powell Group, have a large manufacturing plant in Bradford producing substations, transformers and busbars amongst a range of products for medium and low voltage electrical power distribution.

These are bespoke or low volume custom built items requiring precision engineered components. For the last 15 years they have been customers of Presspahn for insulation, supports and barriers. Recently S & I Ltd was in need of numerous parts delivered within exceptional time-scales. Their purchase team emailed the drawings to our office with details of materials, quantities and the target delivery date. As is frequently the case in the power generation industry where volumes don’t often exceed 50, this was for a one-off item. GPO-3 machined to tolerances within +/- 0.15mm was the specified material.

Matthew Pinder explains the Presspahn process, “When we receive an enquiry it is our aim to respond promptly to the customer to ensure we have all the information to accurately assess the requirements of the job. At this point we are often able to provide advice, sometimes suggesting more appropriate material or more efficient methods of manufacture. We would then produce a quotation for the customer to review and discuss delivery requirements. In all cases we aim to exceed our customers expectations.”

Purchasing at S&I Ltd commented “Presspahn is competitively priced and over the years has proved to be very consistent, delivering good quality solutions and service, helping us on several occasions when a very short turnaround has been required.”


Automotive - Amberjack 

A customer developing car batteries to power custom hybrid and electric cars, needed to source materials to incorporate a bulkhead failsafe. This not only had to provide electrical insulation but needed to be fireproof to meet automotive recommendations and have a degree of flexibility so as not to crack with stress from road vibration.

Having found Presspahn on the internet the guys at Amberjack, gave us a call. Matthew was soon on the road to Grantham with a variety of samples and fully equipped to provide a combustion demonstration. After detailed discussions several prototypes were created based upon cad cam files emailed to Presspahn. Again GPO-3 glass fiber sheet provided the solution however in the batteries themselves Mica was the more appropriate option. Richard at Amberjack chose Presspahn after being impressed with the prompt personal attention following his enquiry and the promise of continued high quality service. He was keen to ensure that delivery lived up to this standard. “I am pleased to say that the close tolerance of precision cutting and rapid turnaround exceeded our expectations and as a result we will be entering full production on schedule.”

Electrical Insulation

Electrical insulation is chosen for its ability to resist the flow of electricity, nonconductive, it can be supplied in flexible thin films, thicker flexible laminates or rigid laminates and can be offered to suit various temperature ranges.


Thermal Insulation

Thermal Insulation is normally requested for two reasons; firstly when electrical insulation is required to work in high temperature ranges, secondly when there is need to prevent the loss of heat from a system