Nexus Series: power quality meters
Nexus Series meters combine revenue-grade energy metering with power quality analysis in a single panel instrument. They suit demanding metering points — substations, interties, large consumers — where dependable energy accounting and disturbance recording are needed at once.
What do they measure and how?
A Nexus meters active and reactive energy at high metering accuracy (typically class 0.2 per IEC 62053-22 / ANSI C12.20) while simultaneously logging harmonics, sags, transients and fault waveforms at high sampling rates. Internal memory and synchronisable clocks let you reconstruct an incident second by second and correlate it across several bays.
Choosing the right model
- Nexus 1252: metering plus power quality for standard bays.
- Nexus 1272: extended recording for interties.
- Nexus 1450: advanced communications for telecontrol integration.
- Nexus 1500: top sampling speed and transient capture.
Also check the instrument-transformer inputs and the protocols your SCADA requires. Ask info@amperis.com for guidance.
Applications
- Main and check metering in transmission and distribution substations.
- Monitoring of utility interties and large industrial customers.
- Disturbance recording for incident analysis and supply-quality claims.
Applicable standards
- IEC 62053-22 / ANSI C12.20: energy meter accuracy classes.
- IEC 61000-4-30: power quality measurement methods.
- IEC 61850: substation automation integration (model dependent).
Frequently asked questions
What does a Nexus add over a conventional meter?
Beyond revenue-grade metering it records power quality and waveforms, so one instrument covers billing, verification and incident analysis — fewer panel slots and less wiring.
Can it integrate with substation telecontrol?
Yes. Depending on the model, the series supports standard industrial and substation communication protocols, including integration into IEC 61850 architectures, reporting measurements and events in real time.
Is it suitable as a check meter against the utility?
Yes; its accuracy class qualifies it for check metering, and its disturbance records help document power quality claims with the utility.
Resources and contact
Compare with the APQM Series for portable analysis and the Shark Series for submetering. Quotations: info@amperis.com · +34 982 20 99 20.