NPR550 series microcomputer protection device (continued 2)

The NPR550 series digital plant transformer protection and measurement device is suitable for use in grounded or ungrounded systems with arc suppression coils at voltage levels of 110kV and below. It serves as a protection, measurement, and control device for plant power, workshop power, and distribution transformers. It can be installed locally in centralized group fire switchgear and fully supports the comprehensive automation system of substations and distribution stations.

NPR550-T1H digital station transformer protection and measurement device: suitable for transformer protection in general occasions
NPR550-T2H digital station transformer protection and measurement device: suitable for dual zero sequence transformer protection