What to Specify—Key Points:
- All EPMS device clocks shall be sync'd within 100 µs.
- EPMS devices shall be sync'd using PTP (IEEE1588) protocol over Ethernet.
- The first SER device shall serve as PTP Master, all other SERs shall sync automatically via PTP.
- EPMS devices without PTP shall be sync'd via legacy protocol from a PTP-enabled SER.
- The Simple PTP Profile shall be used so that no special 1588 switches are required to maintain the specified accuracy.
- Each SER device shall provide an embedded web interface for monitoring of status and events using a standard web browser.
- [OPTIONAL] Each SER device shall output a signal to trigger a waveform capture by a power meter, coincident with any event.
- [OPTIONAL] A GPS antenna and clock shall be supplied to provide an accurate time reference traceable to UTC.
- [OPTIONAL] The EPMS software shall include native drivers for SERs plus analysis and reporting for root cause analysis.
For an editable copy (Word doc) of a complete guide spec, please click:
Resources for Consulting-Specifying Engineers
To understand what we mean by precision time sync and learn why it's important, start with the documents below.Handout: Sequence of Events Recording (SER)
DataSheet: Time Sync via PTP (IEEE 1588)
Data Sheet CyTime SER-3200/2408 Event Recorders
Presentation: PTP-Enabled SER
Next view the documents below to understand how PTP (per IEEE 1588) changes everything—and see how PTP makes SER systems simple, affordable and scalable.Tech Note: Hi-Res Time-Sync via PTP (1588)
Tech Note: SER System Architectures
Tech Note: SER Device Selection Guide
Tech Note: Measuring Breaker Opening Times with CyTime SER
Completing the tour, please click on any of the resources below to help you specify the latest technology for your projects now.SER Guide Spec (doc)
SER Guide Spec (pdf)
Online Demo: SER-3200
Frequently Asked Questions (FAQs)