Accurate timing and synchronization is essential to achieving next-generation Smart Grids for the power industry. Manufacturer of device networking products, Moxa offers PT-7728-PTP series switches that support the IEEE 1588v2 protocol with hardware time stamping to deliver nanosecond-accurate synchronization over Ethernet networks. The switches are the newest addition to the PowerTrans series of IEC 61850-3.
“The PowerTrans has already proven its reliability in a 500-kV smart substation in Suzhou, China,” explains Leo Tsao, senior director of Moxa’s power and transportation division. “With our switches, traffic with IEC 61850-9-1 and IEC 61850-9-2 sampled measurements can be precisely synchronized over the process bus. Protection systems are time-critical and the advanced synchronization capabilities of this technology will only grow more important in the future for electric utilities that seek to improve their monitoring and troubleshooting capabilities.”
The series switches are designed to work reliably without experiencing any communications loss under a variety of EMI phenomena commonly found in substations. The company says the highest level of reliability and availability in high voltage substation communications is achieved by combining high EMI immunity, a -40 to 85°C operating temperature range, isolated redundant power inputs, and redundancy technology. Moxa guarantees fast network fault recovery on their switches (less than 20 milliseconds), and says they also support standard STP or RSTP redundant protocols. Maximum uptime is enhanced by the use of dual redundant power supplies (24/48 VDC or 110/220 VDC/VAC).
Other product features include:
• Hardware-based IEEE 1588 PTPv2 for precise time synchronization of networks
• Verified zero packet loss under harsh EMI interference
• Turbo Ring and RSTP/STP for Ethernet redundancy
• Isolated redundant power inputs with universal 24/48 VDC or 110/220 VDC/VAC power supply range
• -40 to 85°C operating temperature range
• IEC 61850-3 and IEEE 1613 compliant
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