PQI-LV permanent power quality analyzer for 0.4 kV networks
Country: Germany · Model: PQI-LV
The permanent PQI-LV analyzer, class A under IEC 61000-4-30, for 0.4 kV networks monitors voltage quality, measures the currents of up to 16 outgoing feeders through the I-Sense system and at the same time works as a fault recorder. The budget version is designed for permanent monitoring of low-voltage networks and substations, including during their upgrading.
- Class
- A under IEC 61000-4-30
- Network
- low voltage
- Outgoing line current measurement
- I-Sense system, up to 16 feeders
- Functions
- quality analyzer and fault recorder
Technical specifications
| Class | A under IEC 61000-4-30 |
|---|---|
| Network | low voltage |
| Outgoing line current measurement | I-Sense system, up to 16 feeders |
| Functions | quality analyzer and fault recorder |
| IT security | built-in IT security functions |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The device is mounted in a substation or in the main LV board for permanent operation, so data on voltage quality accumulates continuously, without separate trips for surveys. Measurement to class A gives results that can be compared with measurements by portable analyzers of the same class. The I-Sense system picks up the currents of the outgoing lines, so the load of each feeder is visible separately. The fault recorder function records events in the network, such as voltage sags or short circuits, and helps to establish the cause of an outage. The built-in IT security functions are needed when the analyzer is connected to the operator's communication network and data from the substation goes to a central server. The budget level of the device makes it possible to install it at many substations during the upgrading of a distribution network.
How to choose
The main question when choosing is the number of outgoing feeders whose currents must be monitored. One PQI-LV covers up to 16 lines through I-Sense, and for a larger board a second device will be needed. If one-off measurements in final circuits or an energy audit without installation in a board are needed, the portable PQ-Box ONE of the same class A is enough.
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PQI-LV permanent power quality analyzer for 0.4 kV networks. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How many feeders can the PQI-LV monitor?
Through the I-Sense system the analyzer measures the currents of up to 16 outgoing lines. For a board with more feeders an additional device is installed.
Does the PQI-LV record fault events in the 0.4 kV network?
Yes, the device combines a power quality analyzer and a fault recorder. Event records help to find the cause of an outage on the LV side.
Under which standard does the PQI-LV measure?
To class A of the IEC 61000-4-30 standard, like the portable PQ-Box ONE. Therefore the data of the permanent and portable devices are comparable with each other.
Is it safe to connect the PQI-LV to the operator's communication network?
The analyzer has built-in IT security functions for operation in the substation communication network. The protection settings are agreed with the IT department of the network company.
Is the PQI-LV suitable for substation upgrading?
Yes, this budget permanent analyzer is designed for permanent monitoring of LV networks and substations, including during upgrading.
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