The Wiring Installation Training for Industrial Electrical Protections Unit, "WIT-IEP", has been designed by EDIBON to provide experimental training in the installation, wiring, and testing of protective devices used in industrial electrical installations. By assembling electrical circuits and performing functional tests, students can identify the connections of each protective device, analyze its response to different electrical conditions, and verify tripping characteristics and selectivity. This provides practical knowledge of protective device integration, fault identification, and electrical panel installation and testing procedures.
The unit includes the Assembly Frame with Safe Electrical Power Supply, "FP-STR", which provides the working structure for mounting and connecting the different components. Its three aluminum profiles allow components to be arranged in different configurations and several students to work simultaneously. The mounting system facilitates changes to the electrical assemblies. Three-phase power is supplied through a safety electrical box equipped with residual-current and circuit-breaker protection, an emergency stop button, and a voltage presence indicator.
Electrical installations are prepared using the Feeders Installation Kit, "FP-KIT-1", which includes an electrical panel, a combined residual-current and circuit-breaker protective device, and cartridge fuses with an enclosed three-phase fuse holder. The Wiring Installation Kit, "FP-KIT-4", supplies the conductors required for electrical connections, while the Tubes and Fittings for Channelling Wiring Kit, "FP-KIT-10", allows students to route wires through conduits and junction boxes. The 400 VAC contactors included in "FP-KIT-9" provide three-pole contactors with control coils and auxiliary contacts for integration into electrical assemblies.
Residual-current protection is studied using the Differential Circuit Breakers Kit, "FP-KIT-24", which includes two-pole and four-pole Type A and Type AC devices with different rated residual operating currents, including a selective residual-current circuit breaker. These configurations allow students to identify electrical connections, compare protective device characteristics, and verify operation and selectivity.
The Magnetothermal Circuit Breakers Kit, "FP-KIT-25", includes two-pole and four-pole circuit breakers with different current ratings and Type B and C tripping curves. It allows students to study protection wiring for installations with and without neutral conductors and relate operating conditions to circuit-breaker tripping characteristics.
For overload protection studies, the Thermal Relays Kit, "FP-KIT-27", includes three-phase thermal and electronic thermal relays with adjustable current settings, auxiliary contacts, and associated contactors. Students can examine their electrical connections and adjust tripping current settings. The Overvoltage Protection Kit, "FP-KIT-28", includes a Class 2 transient overvoltage suppressor for studying its installation and wiring.
Electrical protection testing is carried out using the Electrical Protections Testing Kit, "FP-KIT-30", which includes adjustable current injection equipment. Differential current injection allows students to test residual-current circuit-breaker operation, while current injection for thermal-magnetic circuit breakers enables the analysis of tripping current and time, B and C tripping curves, and protective device selectivity.
The unit supports practical exercises involving the identification, assembly, and wiring of residual-current, thermal-magnetic, thermal overload, and surge protective devices, together with operating and adjustment tests. A dedicated manual covering theoretical principles and practical installation and wiring procedures is provided. The Tool Box, "CHER", is required but not included.
Additionally, to expand the experimental possibilities, several additional recommended elements can be incorporated, but are not included: the Digital Multimeter, "MED65", and the Measuring Kit, "FP-KIT-5", for electrical measurements and testing, the Rigid Tube Kit, "FP-KIT-10/B", for additional conduit installation configurations, the Isolation Transformers Kit, "FP-KIT-26", for single-phase and three-phase transformer installation and wiring exercises, the Three-Phase Line with Fault Simulation Kit, "FP-KIT-31", for ground fault and protection selectivity studies through fault simulation, and the Earth Installation Kit, "FP-KIT-29", which includes a variable grounding resistor and an earth collector.
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