AVR3AS / AVR3AE / AVR3AN (Pro Series) — thyristor stabilizers up to 2 MVA
Country: United Kingdom · Model: AVR3AS / AVR3AE / AVR3AN (Pro Series)
Pro Series three-phase thyristor stabilizers rated up to 2 MVA with a current of 200–3000 A per phase. They work at grid company substations, wind farms, in telecom infrastructure, embassies and medical imaging departments.
- Power
- up to 2 MVA, 200–3000 A per phase
- Input range
- ±20 % (AS), ±30 % (AE), ±12.5 % (AN)
- Output accuracy
- 3–4 % (AS), 4 % (AE), ±3 % (AN)
- Technology
- thyristor (SCR), maintenance-free
Technical specifications
| Power | up to 2 MVA, 200–3000 A per phase |
|---|---|
| Input range | ±20 % (AS), ±30 % (AE), ±12.5 % (AN) |
| Output accuracy | 3–4 % (AS), 4 % (AE), ±3 % (AN) |
| Technology | thyristor (SCR), maintenance-free |
| Efficiency | > 98 % (AN) |
| Overload | 150 % — 4 min |
| Enclosure | galvanized steel with anti-corrosion coating |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
Regulation is performed by SCR thyristor switches, so there are no mechanical parts that wear out and no scheduled service is needed. The three versions differ in input range. AVR3AS corrects ±20 % with an accuracy of 3–4 %, AVR3AE is designed for deep fluctuations of ±30 % and holds 4 %, and AVR3AN works in a narrower window of ±12.5 %, but gives ±3 % and an efficiency above 98 %. The stabilizer withstands an overload of 150 % for 4 min, which is enough for starting large motors and magnetizing transformers. The cabinets are made of galvanized steel with an anti-corrosion coating and are designed for long operation in technical rooms.
How to choose
The version is chosen by the quality of the mains at the input. If fluctuations do not exceed ±12.5 % and losses matter, take AVR3AN with an efficiency above 98 %. For typical networks AVR3AS is suitable, and for weak distribution lines with dips of up to 30 % AVR3AE. When the load does not exceed 190 kVA, AVR3x of 18–190 kVA with three independent regulators is enough.
Request a price and lead time
AVR3AS / AVR3AE / AVR3AN (Pro Series) — thyristor stabilizers up to 2 MVA. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What is the maximum power of the Pro Series stabilizers?
Up to 2 MVA at a current of 200–3000 A per phase, depending on the version.
How do AVR3AS, AVR3AE and AVR3AN differ?
By input range and accuracy. AS works at ±20 %, AE at ±30 %, AN at ±12.5 % with an accuracy of ±3 % and an efficiency above 98 %.
What overload does the AVR3AS thyristor stabilizer withstand?
An overload of 150 % is permitted for 4 min, after which the load on the stabilizer must be reduced.
Does a thyristor stabilizer need maintenance?
The SCR thyristor circuit has no moving parts or brushes, so there is no scheduled replacement of wearing components.
Is AVR3AN suitable for powering MRI and CT?
Medical imaging systems are among the target applications of the series, and the ±3 % accuracy of AVR3AN meets the strict requirements of such equipment.
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