IVR / IVRI — three-phase oil-filled induction voltage stabiliser 250–5000 kVA
Country: United Kingdom · Model: IVR / IVRI
The oil-filled IVR induction stabilisers cover 250–5000 kVA, and the IVRI with per-phase regulation covers 250–3000 kVA. These compact units for powerful industrial consumers respond to a grid change in less than 1.5 ms.
- Power
- IVRI 250–3000 kVA (13 ratings), IVR 250–5000 kVA (15 ratings)
- Grid
- 380–415 V, 190–240 V or 440–480 V
- Cooling
- oil
- Technology
- magnetic induction, brushless
Technical specifications
| Power | IVRI 250–3000 kVA (13 ratings), IVR 250–5000 kVA (15 ratings) |
|---|---|
| Grid | 380–415 V, 190–240 V or 440–480 V |
| Cooling | oil |
| Technology | magnetic induction, brushless |
| Regulation | IVRI: independent per phase, IVR: common |
| Response time | < 1.5 ms |
| Efficiency | over 97 % |
| Warranty | 2 years |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The oil both insulates and cools the active part, so at the same power the unit is more compact than an air-cooled one. Regulation is brushless, based on magnetic induction, with no mechanical wear of contacts. The IVRI has 13 ratings and regulates the phases independently, so it suits grids with unbalanced load. The IVR has 15 ratings and regulates all phases together. The grid options are 380–415 V, 190–240 V or 440–480 V. Efficiency is over 97 %. To order, an isolation transformer and an MSB main switchboard are added, and then the stabiliser becomes the central node of the low-voltage supply. The warranty is 2 years.
How to choose
The per-phase regulation of the IVRI is needed for unbalanced load, and the IVR gives a higher upper power limit, up to 5000 kVA. For rooms where oil-filled equipment is undesirable, consider the static ESR-3P-T2F/T3F for 450–3125 kVA.
Request a price and lead time
IVR / IVRI — three-phase oil-filled induction voltage stabiliser 250–5000 kVA. 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 IVR stabiliser?
The IVR is made up to 5000 kVA in 15 ratings, and the per-phase IVRI up to 3000 kVA in 13 ratings.
Why does the IVR stabiliser contain oil?
The oil insulates and cools the windings, which makes the unit more compact at the same power. The installation place must be prepared in line with the requirements for oil-filled equipment.
How fast does the IVRI respond to a voltage dip?
The response time is less than 1.5 ms, that is, correction takes place faster than a quarter of the grid period.
Can the IVR be ordered with an isolation transformer?
Yes, to order the stabiliser is supplied with an isolation transformer and an MSB main switchboard.
What is the warranty on IVR / IVRI?
The manufacturer gives a 2-year warranty, the units' efficiency is over 97 %, and the brushless design has no assemblies that need scheduled replacement.
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