Unipower Unilyzer 900 Power Quality Analyser
The Unipower Unilyzer 900 is a Class A power network analyser designed for electric power distribution companies, utilities, electrical engineers, and contractors who need accurate, traceable power quality measurements in the field. Powerpoint Engineering supplies the Unilyzer 900 to Irish utilities, renewable site operators, industrial energy managers, and PQ specialists who need a single instrument that covers permanent monitoring, troubleshooting, commissioning, and compliance reporting.
Power quality issues are rarely simple. A motor that trips on Tuesday afternoons, a UPS that alarms during a storm, a transformer that runs hot under unusual loads. The Unilyzer 900 is the tool you connect, leave running, and come back to with the answer.
What the Unilyzer 900 measures
- Voltage and current across all phases, with neutral and earth where the wiring supports it.
- Harmonics, inter-harmonics, and unbalance to the levels required by EN 50160 reporting.
- Voltage dips, swells, and transients, with high-resolution event capture and timestamping.
- Flicker (Pst, Plt) for installations sensitive to incoming voltage variations.
- Load and network impedance, useful for short-circuit and earth-fault studies.
- Real-time and trended power quality data, exportable to PQ Secure and similar reporting platforms.
Class A compliance per IEC 61000-4-30 means the measurement chain meets the highest accuracy class for power quality measurements. That matters when the data has to support compliance against EN 50160, a network code obligation, or a connection-agreement dispute. Class A data stands up; lower-class data does not.
Built for permanent and portable use
The Unilyzer 900 is built for both fixed substation installation and portable field measurement. The integrated wireless modem and router supports remote download of recorded data, so a unit installed at a difficult-to-reach substation can be polled from the office without a site visit. For field work, the unit is portable enough to move between sites as a tool for all field measurements during a PQ campaign.
The platform is designed for electric power distribution companies to investigate optimisations in the power network, but the same capability supports renewable, industrial, and large-commercial users where PQ data is the difference between blaming the network and proving the cause.
Specifications: what to confirm before you order
| Specification | What to confirm |
| Compliance | IEC 61000-4-30 Class A for power quality measurements |
| Voltage / current inputs | Direct connection limits and CT range matched to your installation |
| Communications | Integrated wireless modem and router, plus Ethernet for fixed installations |
| Software | PQ Secure or equivalent for data analysis and EN 50160 reporting |
| Power supply | Stable voltage supply options for substation and portable use |
| Calibration | Supplied calibrated; periodic recalibration through Powerpoint’s lab |
Target users and applications
- Utilities and DNOs running permanent power quality monitoring at substations and connection points
- Renewable site operators investigating PQ at wind, solar, and BESS export points
- Electrical engineers and PQ consultants providing investigation, commissioning, and compliance reports
- Industrial energy and maintenance teams diagnosing harmonic, flicker, and voltage events
- Electrical contractors carrying out PQ assessments as part of acceptance or fault investigation
Typical applications include long-term EN 50160 compliance logging, voltage dip and event capture during fault investigation, harmonic surveys on industrial sites, flicker measurement near sensitive loads, and pre-connection PQ surveys for new generation.
Powerpoint Engineering supports the Unilyzer 900 with in-house calibration and repair, accessory supply, and operator training, alongside our wider power quality monitoring survey services for sites that prefer outsourced PQ campaigns.
FAQs
What does Class A mean for a power quality analyser?
Class A is the highest accuracy class defined in IEC 61000-4-30 for power quality measurement instruments. Two Class A instruments measuring the same signal will produce results within a tightly defined tolerance. Class S and Class B are lower tiers used for screening rather than compliance reporting.
Can the Unilyzer 900 be left at a substation for long-term monitoring?
Yes. The unit is built for permanent installation as well as portable use. The integrated wireless modem and router supports remote download of recorded data, and the unit runs continuously on a stable voltage supply, capturing trended PQ data in the background.
Does the Unilyzer 900 need calibration?
Yes. As a Class A instrument used for compliance and acceptance reporting, the Unilyzer 900 should be recalibrated periodically. Powerpoint Engineering’s calibration laboratory recalibrates Unipower power quality meters and supplies a traceable certificate.
To match the right Unilyzer 900 configuration to your network, communications, and reporting requirements, request a quote or speak to our team for compatibility advice.
