The SVERKER 650 single-phase relay test set has been designed to incorporate the benefits gleaned from many years of experience in field relay testing. Compact and powerful, this instrument has a well-earned reputation for reliability and convenience and it provides all of the functions needed for secondary testing of almost all types of single-phase protection now available on the market. The SVERKER 650 features logical design and construction, is extraordinarily easy to learn and use, and its compact design and light weight make it extremely portable. The SVERKER 650 is ideal for use in high voltage substations and industrial environments. This instrument is intended primary for secondary injection testing of protective relays and virtually all types of single-phase protection can be tested