Power Quality Meter with Phasor Measurement Unit

Home ProductsNexus® 1500+ Power Quality Meter with Phasor Measurement Unit

Nexus® 1500+ Power Quality Meter with Phasor Measurement Unit

The Nexus^® 1500+ power quality meter provides invaluable power quality analysis using the latest PQ standards to record electrical disturbances, improving power system reliability and reducing downtime costs. It is also a precision revenue meter that collects energy usage with high accuracy. It is a cyber secured power quality meter, featuring multiport communication and is easy to install into existing infrastructure.

Precision Revenue Metering
Power Quality Analysis
Phasor Measurement Unit (PMU)

Resilient Cyber Security™
Multiport Communication
Customizable Installation

Precision Revenue Metering
Creates Confidence in Energy Measurement

Certified ANSI C12.20 0.1 Accuracy Class.
0.06% energy accuracy with Constant Calibration™ Architecture.
Extensive load profiling, TOU, and line loss compensation.
Multifunction metering, including current, volts, watts, and frequency.
Vector/arithmetic sum for VA calculation.

Nexus<span class='regmark'>®</span> 1500+ Power Quality Meter with Phasor Measurement Unit

Power Quality Analysis
Eliminating Disturbances and Outages Reduces Operating Costs

Capture power quality events, including surges and sags, and record subcycle transients at 50 MHz resolution.
Monitor voltage reliability to industry-accepted normative standards – IEC 61000-4-30 Class A Ed. 3 Certified.
Provide power quality reliability indices, including CBEMA and SEMI F47.
Quantify system reliability with power quality measurements, such as harmonics, flicker, unbalances, frequency, and power factor – IEC 61000-4-15 Class A Flicker Meter and IEC 61000-4-7 Class A Harmonics and Interharmonics analysis Certified power quality meter.
Customize and view EN 50160 power quality compliance reports.

Phasor Measurement Unit (PMU)
Synchrophasor Measurements Improve Power System Stability

Provide system operators with wide-area situational awareness through improved visibility into dynamic grid conditions.
Determine stress points of the electric power system.
Detect and aid in restoring an islanded section of the grid after a storm or major outage disturbance.
Instantaneous measurements provide early warning detection alerts that SCADA systems miss.
Provides built-in system wide PMU analysis for future implementation of big data analytics, artificial intelligence, and machine learning to proactively improve power systems and prevent outages.

PMU Captures Events SCADA Misses

The PMU provides the following synchronized measurements:
- Individual voltage/current phasors (Va, Vb, Vc, Ia, Ib, Ic).
- Symmetrical components phasors (V0, V1, V2, I0, I1, I2).
- Frequency and Rate of Change of Frequency (ROCOF).
- Built-in digital inputs.
- Analog
  - Fundamental power: (watt total and per phase, VA total and per phase, VAR total and per phase).
  - Displacement power factor: (total and per phase)
Supports P (Fast Response) or M (Precise Measurement) classes, user selectable.
Data frame rates for 50 Hz: 10/25/50 frames per second; for 60 Hz: 10/12/15/20/30/60 frames per second.
Data format: Configurable float or integer, polar or rectangular.
Time sync standard: IRIG-B or IEEE 1588 PTPv2.
Number of sessions: up to 2 simultaneous clients.
Supports Ethernet or Fiber over Ethernet: TCP communication for header, configuration, and command; UDP communication for data, including unicast, broadcast, and multicast.

Resilient Cyber Security™
A Cyber Secured Implementation Prevents Attacks on Your Power System Data

128-bit AES encrypted communication of sensitive data, including passwords, usernames, roles, and rights.
24-character complex passwords with password expiration.
Digital firmware signature with 512-bit encryption and customizable keys.
Eliminate brute force attacks with password fail timeouts.
Customizable role-based authorization with eight configurable roles.
Physical seals requiring physical access to the power quality meter make remote tampering impossible.
Security lockout prevents security from being disabled.

Multiport Communication
6 Communication Ports Communicate with SCADA and Other Software Systems Simultaneously

Communication protocols include Modbus ASCII/RTU/TCP, DNP3, IEC 61850, GOOSE messaging, IEEE C37.118 (PMU), SNMP, SMTP, SNTP, and IEEE 1588 PTPv2
Up to 64 simultaneous protocol connections
Built-in webserver to view and analyze real time data
Two independent ethernet ports, with unique IP addressing, port control for security, DHCP, and email on alarm
Two independent serial ports
Front panel ANSI optical and USB ports

Customizable Installation
Provides Multiple Installation Options

Can be mounted to panel either horizontally or vertically – allows for extra room on panel.
Display screens can be rotated to support vertical installation.
Internally mounted I/O reduces mounting footprint.