Selective Current Generator Delta Energy Systems (Switzerland) AG Selectronik-5

The Selective Current Generator Selectronik-5 from Delta Energy Systems (Switzerland) AG is a purpose-built test instrument for producing controlled alternating test currents used in protection relay testing, fault location and cable testing. The unit delivers selectable output current waveforms and amplitude levels, stable frequency and interfaces designed to connect to protection equipment and measurement devices. It is intended for use by electrical engineers and service technicians working on power distribution networks who require reproducible, adjustable test currents for calibration and diagnostic procedures.

Advantages

The Selectronik-5 provides precise and stable current output with selectable waveforms, enabling repeatable testing and accurate verification of protection relays and fault indicators. Compact and engineered for field and workshop use, the device includes interfaces suitable for connection to a variety of protection and measurement instruments. Built for reliability, it simplifies selective tripping tests and reduces setup variability during calibration and diagnostic routines.

Suitable for

Key specifications

How to use

Connect the Selectronik-5 to the protection relay or circuit under test using the appropriate output leads and safety grounding. Select the required output waveform and current amplitude, set the frequency if applicable, and start the current output. Monitor the relay response or measurement equipment while adjusting the output to perform calibration, selective tripping, or fault location procedures. Follow standard safety procedures and lockout/tagout policies when connecting to live systems and ensure proper personal protective equipment is used.

Recommendations

Use the device in dry, well-ventilated environments and avoid exposure to excessive dust or moisture. Verify connections and grounding before operation, and start with lower current settings when first connecting to sensitive protection equipment. Perform tests according to relevant protection testing standards and manufacturer's instructions for the protection relays in the system.