MVR / MVRI — three-phase air-cooled induction voltage stabiliser 250–2000 kVA
Country: United Kingdom · Model: MVR / MVRI
The air-cooled MVR and MVRI induction stabilisers are designed for 250–2000 kVA (11 ratings) and respond to a grid change in less than 1.5 ms. They are installed at the supply of large industrial and commercial sites, where the unit must work for years with practically no maintenance.
- Power
- 250–2000 kVA (11 ratings)
- Grid
- 380–415 V, 190–240 V or 440–480 V
- Technology
- magnetic induction, brushless
- Regulation
- MVRI: independent per phase (up to 100 % imbalance), MVR: common
Technical specifications
| Power | 250–2000 kVA (11 ratings) |
|---|---|
| Grid | 380–415 V, 190–240 V or 440–480 V |
| Technology | magnetic induction, brushless |
| Regulation | MVRI: independent per phase (up to 100 % imbalance), MVR: common |
| Response time | < 1.5 ms |
| Efficiency | over 97 % |
| Options | isolation transformer, main switchboard (MSB), container version |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
Regulation is based on magnetic induction without brushes or sliding contacts, so there is practically no mechanical wear. The MVRI regulates each phase independently and copes with load imbalance of up to 100 %, while the MVR corrects the three phases together. Cooling is by air and there is no oil in the unit, which simplifies the room requirements. Grids of 380–415 V, 190–240 V and 440–480 V are supported. Efficiency exceeds 97 %. To order, the stabiliser is supplied with an isolation transformer and an MSB main switchboard, or in a container version for installation next to a substation.
How to choose
If the load across phases is uneven, take the MVRI, and for balanced three-phase consumers the MVR is enough. When the supply power is below 250 kVA, look at the static ESR-3P-T1F for 6–400 kVA. For sites above 2000 kVA there are static ESR-3P-T2F/T3F units up to 3125 kVA.
Request a price and lead time
MVR / MVRI — three-phase air-cooled induction voltage stabiliser 250–2000 kVA. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How does the MVRI differ from the MVR?
The MVRI regulates each phase independently and withstands imbalance of up to 100 %, while the MVR regulates the three phases together.
What is the response speed of the MVR induction stabiliser?
The response time is less than 1.5 ms, so voltage dips are corrected before the equipment notices them.
Does the MVR need brush replacement?
No, the magnetic induction technology is brushless and the stabiliser has no wearing assemblies.
Can the MVR be placed in a container outdoors?
Yes, the container version is among the options, along with an isolation transformer and an MSB switchboard.
What is the power of MVR / MVRI stabilisers?
From 250 to 2000 kVA, with 11 ratings in total and efficiency over 97 %, so ordinary ventilation removes the losses even of the largest model.
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REQUEST
Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.