AVR-L (AVR3LS) — three-phase stabilizer 70–140 kVA with digital meters
Country: United Kingdom · Model: AVR-L (AVR3LS)
The three-phase solid-state voltage stabilizer of the L series, rated 70–140 kVA, holds the output to within 3 % with a mains deviation of ±20 %. It is installed at the input of a building, workshop or telecom node where the supply parameters must be visible in real time.
- Power
- 70–140 kVA
- Input range
- ±20 %
- Output accuracy
- 3 % (better than the EN 50160 requirement)
- Technology
- solid-state, no moving parts
Technical specifications
| Power | 70–140 kVA |
|---|---|
| Input range | ±20 % |
| Output accuracy | 3 % (better than the EN 50160 requirement) |
| Technology | solid-state, no moving parts |
| Measurements | input/output voltage, current, frequency; USB-B for the log |
| Protection | class II surge arrester, output circuit breaker |
Ukrainian replacement/analogue
- Three-phase inverter voltage stabilizer Volter Smart-100 (105 kW)
- Three-phase stepped voltage stabilizers Volter 100 / 150 / 200 (105–210 kW)
- Three-phase stepped thyristor voltage stabilizers Hertz-PRO V3.0, 66–106 kW (3×100 … 3×160 A)
- Three-phase inverter voltage stabilizers 66–216 kW (Quant-66 … Quant-216) with power combiner
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
Regulation is fully electronic with no moving parts, so the unit handles voltage jumps 10 times faster than servo-driven stabilizers. The 3 % accuracy is better than the EN 50160 requirements for voltage in public networks. The front panel carries digital meters for input and output voltage, current and frequency, and the event log is downloaded through the USB-B port for fault analysis. A class II surge arrester is fitted at the input and a circuit breaker at the output, so a separate protection panel for the stabilizer is usually not needed. The Pi version has an extended display and communication facilities for remote monitoring.
How to choose
The model is chosen by the total load of the three phases with a margin for inrush currents, within 70–140 kVA. If the mains sags deeper than 20 %, it is better to take AVR3x with a range of −30…+22 % and a power of 18–190 kVA. For substations and wind farms where up to 2 MVA is needed, the thyristor series AVR3AS / AVR3AE / AVR3AN is suitable. The Pi version is taken when the stabilizer has to report to a dispatch system.
Request a price and lead time
AVR-L (AVR3LS) — three-phase stabilizer 70–140 kVA with digital meters. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How much faster does AVR-L react to voltage jumps than a servo-driven stabilizer?
According to the manufacturer, the response speed of the L series is 10 times higher than that of servo-driven models, because regulation is solid-state and there is no mechanics.
What output voltage accuracy does AVR3LS provide?
The output voltage is held to within 3 %, which is better than the EN 50160 requirements, with an input deviation of up to ±20 %.
Does the AVR-L stabilizer have surge protection?
Yes, a class II surge arrester is built in, and the output is protected by a circuit breaker.
How can the event log be read from the AVR3LS stabilizer?
The log is downloaded through the USB-B port. For permanent remote monitoring there is the Pi version with an extended display and communication facilities.
What is the power of the AVR-L three-phase stabilizer?
The range covers 70–140 kVA. For a smaller load there is AVR3x from 18 kVA, for a larger one the thyristor Pro Series up to 2 MVA.
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