700 kW of raw power

Hoyer has manufactured the largest low-voltage motors in the history of the company. Logistical customisation, administrative patience and extensive expertise formed the trinity behind the project.

With a weight of 3.5 tonnes each, Hoyer has made its mark as a supplier of large low-voltage motors to the international market. In September the company was able to deliver three of the large motors to a customer in Norway.

Special containers and lifting gear

Specifically, the motors are pump motors performing 700 KW each. The motor type is construction size 450, i.e. 140 centimetres high and 220 centimetres long in this case.

“These are the largest low-voltage motors we have delivered in the history of Hoyer. This also resulted in a few logistical challenges throughout the process. As an example, we did not have any lifting gear that could handle these dimensions and the motors had to be shipped to the customer in special containers,” explains Loke Svendsen, Country Manager at Hoyer.

Extra dimensions – extra paperwork

There is also a great deal of administrative work associated with the manufacture of such large motors. When a new project is launched, new documentation and testing are naturally required. The project, comprising Hoyer Motors’ largest low-voltage motors to date, is somewhat more complicated as the end user of the pumps is Russian. The motors must therefore be classified in accordance with RMRS – the Russian classification society.

“This meant that we needed to enter a type approval process for the individual motors. And when we are dealing with such large motors, there is additional paperwork that must be prepared even before we can test them,” says Loke Svendsen.

A global door-opener

But the delivery of the large motors has not only meant that Hoyer Motors has had the chance to gain experience in manufacturing and paperwork.

“We have not previously been able to offer such large motor sizes to our customers as we have not had the expertise to manufacture them. But over the last five years we have gained a lot of experience in this area. And since we will now be able to use the three large motors as reference project, it also provides us with better opportunities to contribute technical know-how and act as a professional partner for companies using motors of this size. This leaves no doubt that the project is also opening doors on a global level,” Loke Svendsen points out.