UR7DH GE Inter-Relay Communications Module

The type 7 Communications Module UR Series Universal Relays GE Multilin UR-7DH COMMS Module is of the 7D order specification. This means that this communications module only has one channel (some have two). The UR-7DH COMMS Module is described by a single-mode Laser with a 1300 nm wavelength. The orientation of the one channel for the 7D and for the 72 Modules is at the top vertical position with a Tx1 and an Rx1. The visual for this description is found in figure 3-29 of the T60 Transformer Protection System catalogue. A maximum of one inter-relay communications order code can be selected per T60 unit. The 7D communications module order code may also be included in the reduced size version (vertical T60). The 7D order option can also be found in the L90 Multilin GE universal relay. This communications module provides the universal relay with advanced communication capabilities to add flexibility to communicate data remotely and to provide engineering access. This advanced communication ability reduces the need to add an external communication hardware to the system, benefiting the end user.