Testing system for relay protection and substations SVERKER 900

The SVERKER 900 system is specifically designed for basic, manual secondary current and voltage testing of protection devices. In addition, various primary current tests can be performed as current and voltage sources can be connected in series and/or in parallel to provide current output up to 105 A or voltage up to 900 V AC. All three current sources and four voltage sources can be individually adjusted in amplitude, phase angle and frequency. The fourth voltage source allows you to test digital relays that require a voltage reference that simulates a bus.

Areas of use • Commissioning and maintenance of distribution and generating electrical substations • Relay protection - Electromechanical relays / Static relays / Digital relays • Construction of excitation curves for current transformers. • Measurement of the transformation ratio of current and voltage transformers. • Load measurement of current transformer circuits. • Polarity (direction) check. • Loading of switching equipment with primary current - Three-phase systems / Single-phase systems. • Verification of alarm thresholds and measured values ​​for the SCADA monitoring and data acquisition system. • Continuity of chains.

Test software The SVERKER 900 system contains a number of test software tools, the use of which depends on the type of test being performed. Using various software tools, you can adjust the output of the current and voltage generators, however, they can also be controlled using the main knob.

Protection relay testing The SVERKER 900 system provides ample opportunities for manual testing of relay protection equipment with secondary current and voltage. Practically all types of single-phase and three-phase relay protection can be tested - from modern multifunctional relays to electromechanical relays. The system allows you to enter current up to 105 A when a high range is needed and it has a frequency range of 10 Hz to 600 Hz and DC can also be used. In the "expert" mode, the user has the ability to add levels of superimposed frequency.