The analog signals from the CTs and VTs in the yard are converted to digital and transmitted via the Sampled Values (SV) network communication protocol. IEC 61850-9-2LE compliance offers interoperability with any process bus device – there is no reliance on proprietary techniques. The MU320 has a compact design, with a shallow case depth for easier accommodation inside space-constrained yard kiosks.
MU320 installations offer cost savings thanks to the simplified Ethernet cabling as opposed to the many kilometers of copper hardwiring in conventional substation schemes. The device can be used in both new-build substations, and to refurbish existing facilities. Safety and maintainability are boosted by the removal of dangerous cross-site CT circuits, and the inclusion of self-monitoring to negate the need for periodic testing/inspection.