It is normal practice to carry out bench tests of the functional behavior of prototype circuitry during the development of any new product. This identifies problems that had not been predicted during the feasibility study and provides an opportunity to rectify those faults. It also provides an early opportunity to check that the design requirements are being met. Since EMC is also a functional requirement, it is logical to expect that this aspect of design should be checked at the prototype stage. Two items of essential equipment are the voltage transformer and the current transformer. Several manufacturers produce such items, but they are highly expensive, and not really suitable for general-purpose use. So the transducers described in this section were assembled from components obtained from a supplier of electronic components.

Chapter Contents:

• 7.1 Voltage transformer
• 7.2 Current transformer
• 7.3 Triaxial cable
• 7.4 The isolated conductor
• 7.5 Cable characterization
• 7.6 Cable transients
• 7.7 Capacitor characterization

Inspec keywords: electromagnetic compatibility; potential transformers; current transformers; transducers; circuit testing

Other keywords: design requirements; bench testing; functional requirement; current transformer; prototype circuitry; voltage transformer; functional behavior; EMC; transducers; electronic components; general-purpose use

Subjects: Production facilities and engineering; Electromagnetic compatibility and interference; Inductors and transformers; Sensing devices and transducers