Numerical relays are based on the use of microprocessors. The first numerical relays were released in 1985.
A big difference between conventional electromechanical and static relays is how the relays are wired. Electromechanical and static relays have fixed wiring and the setting is manual. Numeric relays, on the other hand, are programmable relays where the characteristics and behavior can be programmed. Most numerical relays are also multifunctional.
Scope
Modern protection relays
Multifunctional protection
Product benefits
Provide continuity of power to consuments
Protection of network assets
Protection against life-threatening electrical incidents
Product features
Self-checking facility
Low burden relays improve accuracy
Fast fiber optical communication with substation LAN
Adaptive relaying schemes
Permit storage of historical data
Time stamping
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