ESL-511The microcomputer comprehensive protection and measurement device is a new generation of digital protection and measurement device. Microcomputer protection is a relay protection composed of microcomputers and is the development direction of power system relay protection. It has high reliability, high selectivity, and high sensitivity. The hardware of the microcomputer protection device is centered around a microprocessor (microcontroller), equipped with auxiliary circuits such as input and output channels, human-machine interfaces, and communication interfaces, to achieve real-time monitoring and protection of the operation status of electrical equipment.

ESL-511Universal microcomputer protection device (with optional arc protection function) can complete35KVFast line protection for busbars and below that are difficult to complete, as well as explosion-proof protection for cable heads.ESL-511Microcomputer comprehensive protection is suitable for35kvSubstations, power plants, switch stations, and lightning circuit distribution automation systems with voltage levels below. The protection and measurement device adopts a four in one design, which can be used as line protection, transformer protection, capacitor protection, and motor protection.