Current transformers are indispensable in many places.
A current transformer is a transducer which changes a high primary current into a more easily processable electrical signal. It transforms a high alternating current into a galvanically isolated alternating current of 5 amps or 1 amp. This is achieved by the electromagnetic principle of operation of the current transformer and serves the subsequent further processing of the alternating current. So if you need to process and measure alternating currents in your company, the use of a current transformer is indispensable. However this is not the only place where current transformers are used. By far the most important area of application is energy management and thus the power network itself as well. It is therefore clear that nowadays one would hardly be able to manage without current transformers. So put your trust in Müller + Ziegler – a company with more than 100 years’ experience in the manufacture of electrical measuring instruments.
Müller + Ziegler offers tailored solutions for your current transformer needs too.
Our numerous products include current transformers of accuracy classes 1 and 0,5. However, if you require current transformers of higher accuracy classes, this is possible without any problems, on request. We have specialised in developing tailored solutions to satisfy individual customer wishes. Thus, not only are current transformers of higher accuracy classes but also certified transformers or models for DIN rail mounting are available on request. The rated power available at the secondary terminals is stated in VA. The choice of rated power as well as the measuring range itself are determined by the consumption of the particular meter that is connected to the current transformer, including the feeder. The loss that arises due to the feeder is dependent on its length. Hence particularly high losses arise in the case of a long feeder and secondary currents of 5A. If the length of the feeder cannot be altered, current transformers with a 1A rating are recommended to minimise the loss that arises.
Diverse current transformers from our wide product range
We are able to offer you a wide choice of current transformers for diverse purposes. Besides straight-through current transformers we can also supply wound primary current transformers, summation current transformers and split-core current transformers. Which model of the respective category is best suited for use in your company is dependent on numerous factors. In general it should be borne in mind that with straight-through current transformers with a lower transformation ratio, the output power in VA falls as well. Through repeated passage of the primary conductor, a smaller ratio can be achieved for unaltered output power (VA).
When using the current transformer always be aware that hazardous voltages may be present on exposed secondary terminals and therefore “exposed working” should be avoided without fail.
Current transformers and much more – Müller + Ziegler is your point of contact for all types of electrical meters
In addition to diverse current transformer models, we also offer a large choice of other products which are ideally suitable for use in switchgear, machine and control engineering, the wind power industry and automation technology. From diverse meters such as analogue or digital panel meters or Universal meters through to Energy meters you can obtain all of the electrical measuring equipment your company needs from us. As our customer, we give priority to your individual requirements. We look forward to receiving your enquiry!