PR640 Digital Protection

PR640 programmable digital protection can be used in a variety of main connection modes to support different types of power networks, such as neutral ungrounded system, arc extinguishing coil grounded system and small resistance grounded system. It is of powerful function, flexible application, stable and reliable quality. PR640, which supports the setting in protective functions, can be configured for different protections such as in-line, bus-connection, out-line, transformer out-line, capacitor out-line, motor out-line, PT and so on according to different application requirements.