PQI-LV
Enhancing Transparency in the Low-Voltage Grid
Enhancing Transparency in the Low-Voltage Grid
PQI-LV
The PQI-LV is a cost-effective class A power quality analyzer & fault recorder in accordance with IEC 61000-4-30 Ed. 4 and is designed specifically for low-voltage monitoring. It is characterized by its compact design, high-quality measurement technology and simple installation thanks to sensor technologies such as Rogowski coils and current sensors. This makes the PQI-LV the ideal solution for monitoring new consumer and generator technologies (PV, e-mobility, battery energy storage system/BESS, heat pumps) and grid monitoring in industrial applications (supraharmonics up to 20 kHz). In combination with »I-Sense«, it enables more efficient grid utilization and controllability in compact and secondary substations. This power quality analyzer meets current IT security requirements and can be easily integrated into many applications thanks to standardized interfaces and web server technology.
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PQI-LV
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I-Sense: Current Feeder Measurement
Technical Data Sheets
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Rogowski Coil
Current Clamp
Divisible Differential Current Transformer
GPS Receiver Set
PQI-LV – Transparency in the Low-Voltage Grid
Cost-Efficient Monitoring in the Low Voltage Range
The PQI-LV is an economical Class A grid analysis device in accordance with IEC 61000-4-30 Ed. 4. Developed to meet the challenges posed by the increasing integration of new consumer and generator technologies such as PV systems, e-mobility, battery energy storage system (BESS) and heat pumps, the device also monitors inverter technologies in industrial applications safely and efficiently. As an option, the PQ analyzer records supraharmonics up to 20 kHz and can be expanded into a complete transient recorder and fault recorder for high-resolution fault records in the event of a fault.
- Ensuring power quality for fast and efficient charging and simplified troubleshooting at e-charging stations such as hyperchargers and/or DC charging parks
- …and many other possible measurement tasks in the low-voltage grid.
The Right Solution for a Wide Range of Low-Voltage Measurement Tasks
The PQI-LV is ideal for measuring and monitoring tasks in the low voltage range. It impresses with its cost efficiency and very high measurement accuracy (deviation < 0.1%). As a class A measuring device in accordance with IEC 61000-4-30 Ed. 4, the power analyzer always provides the right measurement data – suitable for your application:
- High-quality power quality monitoring in the secondary substation with optional current feeder measurement for up to 16 feeders with »I-Sense«
- Monitoring processes and machinery in industrial power grids
- Energy management with power quality monitoring
- Monitoring of EMC filters (passive/active)
- Monitoring of critical processes for preventive maintenance and reduction of downtimes
- Installation in large-scale PV systems to detect grid oscillations at an early stage
- Securing the power supply in critical situations in emergency power systems (EPS) and large UPS systems in data centers as well as in critical infrastructures such as hospitals, airports and military facilities and in the petrochemical industry
Compatible With »I-Sense« Current Feeder Measurement Technology
Keep the future in mind and combine PQI-LV as power quality measurement device with the simple and efficient »I-Sense« current feeder measurement technology. Use the measurement data to identify trends at an early stage and enable more efficient utilization and controllability in the depth of the grid. The system can be used to monitor up to 16 feeders in compact and secondary substations (three-phase and four-phase systems).
Easy to Install and Integrate
Quick, easy and secure installation on site via Rogowski coils. Easy wiring thanks to the daisy chain principle using standard RJ45 cables. This makes the PQI-LV power analysis device particularly user-friendly when retrofitting with existing measurement technology.
Open and Standardized Communication Interfaces
Thanks to standardized interfaces, current IoT protocols and web server technologies, the PQI-LV offers simple and secure integration into a wide range of applications. With support for standard file formats such as COMTRADE and PQDIF, the mains analysis device can be flexibly connected and guarantees maximum IT security.
- Modbus TCP & RTU
- IEC 60870-5-104
- IEC61850
- HTTPS & REST API
- COMTRADE
- PQDIF
IT Security by Design
The power quality analysis device offers state-of-the-art IT security functionality such as full audit logging, encryption technologies (AES256) and User Rights Management (URM) with Role-Based Access Control (RBAC).
Transparency in the Distribution Grid – powered by A. Eberle
Power Quality Monitoring With »PQI-LV« in Combination With »I-Sense«
High-quality power quality monitoring with the option of quick and easy feeder current measurement helps to identify trends at an early stage so that countermeasures can be initiated in time. The »PQI-LV« grid analysis device in combination with »I-Sense« thus enables more efficient utilization and controllability in the depth of the low-voltage grid.
High-Precision Transformer Measurement in the Secondary Substation with the »PQI-LV«
- Measure voltage, current, power and power quality parameters at the transformer feed-in with extremely low deviations in accordance with IEC 61000-4-30 Class A Ed. 4. Evaluate the power quality via in accordance with EN50160 and IEC61000-2-2.
- Analysis of flicker, THD, harmonics (H2-H50), supraharmonics 2-20kHz, transients & PQ events with fault recording in the case of an event of under- or overvoltage.
Measuring, Recording and Evaluating Outgoing Circuits With the »I-Sense« Current Feeder Measurement Technology
- Current measurement L1/ L2 / L3 / (N) with min. and max. values for up to 16 feeders.
- Simple connection possible using existing third-party devices, such as switching pannels with intelligent transducers.
Reporting – To the Point With the Analysis Software »WinPQ« & »WebPQ«
- »WinPQ« & »WebPQ« analysis software for quick and easy evaluation of power quality and feeder current using intuitive, configurable reports. Click here for an example report!
Quick Comparison:
PQI-LV vs. PQI-DA smart vs. PQI-DE
Find the Right Power Quality Analyzer for Your Application.
PQI-LV
PQI-DA smart
PQI-DE
• Secondary substation
• Depth of the grid (cable-/light-/sub-distributors)
• Industrial power grids (machinery/processes & plants)
• Retrofits
Low-voltage
✔️
10.24 kHz / Optional 40,96 kHz (B1)✔️
✔️
2 kHz to 20 kHz according to IEC61000-4-7 via software option (B1)✔️
CCCI, SSH, HTTP(S)Modbus RTU & TCP (Standard)
✔️
IEC60870-5-104 (P1), IEC61850 (P2), Modbus Master (P3) MQTT*✔️
Radius, RBAC, URM, encryption✔️
1GB ~ 140 weeks with standard template❌
DIN-rail
130 x 90 x 58mm
L x W x HDirect
230 / 400 / 690VRogowski coils & current sensors
350mV input
❌
❌
❌
Optional
• PCC / Point of Common Coupling (IEC 61000-2-2)
• POC / Point of Connection (EN 50160)
• Secondary substation with increased requirements
• Industrial applications
Low-, medium- and high-voltage
✔️
10.24 kHz / Optional 40,96 kHz (B1)✔️
✔️
2 kHz to 20 kHz according to IEC61000-4-7 via software option (B1)✔️
CCCI, SSH, HTTP(S)Modbus RTU & TCP (Standard)
✔️
IEC60870-5-104 (P1), IEC61850 (P2), Modbus Master (P3) MQTT*✔️
Radius, RBAC, URM, encryption✔️
1GB ~ 140 weeks with standard template1.7 inches
DIN-rail,
Front panel installation using adapter
160 x 90 x 58mm
L x W x HDirect and transducer measurement
100 / 230 / 400 / 690V1A/5A measuring transformer (C30)
1A/5A protection transformer (C30)
Rogowski coils (C40)
Sensor technology (C44)
DC (C45)
2 / 2
❌
❌
✔️
• Substations
• Industrial applications
• Grid code compliance
• High-precision frequency measurements
• Residual Current Monitoring (RCM)
Low, medium and high voltage
✔️
10.24 kHz / Optional 40.96 kHz (B1)✔️
✔️
2 kHz to 20 kHz according to IEC61000-4-7 via software option (B1)✔️
CCCI, SSH, HTTP(S)Modbus RTU & TCP (Standard)
✔️
IEC60870-5-104 (P1), IEC61850 (P2), Modbus Master (P3) MQTT*✔️
Radius, RBAC, URM, encryption✔️
1GB ~ 140 weeks with standard template5 inches
Front panel installation
144 x 144
144 x 144 x 90 mm
L x W x HDirect and transducer measurement
Small signal transducer (E3)
1A/5A measuring transformer (C30)
1A/5A protection transformer (C30)
Rogowski coils (C40)
Mini current clamps (C44)
DC (C45)
8 / 4
✔️
5th current feeder (30mA)✔️
PT100 / PT1000 / KTY✔️
Power Quality Analysis Software
Suitable for PQI-LV
WinPQ
High-Quality Analysis Software
WinPQ system solution for all permanently installed fault recorders, power quality monitoring devices and portable power quality analyzers from A. Eberle. Permanent power quality monitoring – from high voltage to the end customer in one system. Intuitive operation despite large amounts of data.
WebPQ® Visualizer
The Intelligent Add-on for WinPQ
The fully responsive & web-based user interface as an installable app for evaluating your power quality data in your local IT environment.
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