When a cable harness and sub-assembly manufacturer was tasked to produce a special high density voltage converter, they began designing resistive equipment to offer variable voltages for diesel engines for OEMs powering some of the world's leading construction and earthmoving equipment. The method of control employed previously was an expensive solid-state computer-based unit which was prone to failure. PHT needed a way of overcoming this.

ARCOL was tasked with ensuring that the design could operate in extreme environmental conditions, such as very high humidity, as well as providing special packaging to meet a need for minimal assembly processing in a restricted space. We also had to design a solution suitable for high power density in up to 100°C ambient conditions while meeting the customer's tight development and roll out schedule.

Engineers, production and co-ordinating staff from ARCOL worked closely with both PHT and customers to ensure the package conformed to the design brief within the pressing time scale. The project was completed in under three months, from initial contact to bulk supply.

These voltage control assemblies were installed on vehicles at a fraction of the original cost, and are now in use in some of the world's most rugged application areas, where reliability of the resistor and its assembly are of critical importance.