Ministab / Sterostab T — three-phase voltage stabilizers with common regulation, 3.5–800 kVA
Country: Italy · Model: Ministab T / Sterostab T
Ministab T and Sterostab T are three-phase voltage stabilizers for 3.5–800 kVA with regulation common to all three phases. Ministab T covers 3.5–32 kVA and Sterostab T covers 22–800 kVA. They are intended for symmetrical loads.
- Power
- Ministab T 3.5–32 kVA; Sterostab T 22–800 kVA
- Voltage
- 380/400/415 V, 50/60 Hz
- Regulation
- common to all three phases
- Load imbalance
- up to 50 %
Technical specifications
| Power | Ministab T 3.5–32 kVA; Sterostab T 22–800 kVA |
|---|---|
| Voltage | 380/400/415 V, 50/60 Hz |
| Regulation | common to all three phases |
| Load imbalance | up to 50 % |
| Accuracy | ±1 % RMS |
| Efficiency | > 98.5 % |
Ukrainian replacement/analogue
- Three-phase stepped thyristor voltage stabilizers Volter 10.5–81 kW (S, PT, PTS, PTSh, PTSSh)
- Three-phase stepped thyristor voltage stabilizers Hertz V3.0, 16.5–53 kW (3×25 … 3×80 A)
- Three-phase stepped thyristor voltage stabilizers Hertz-PRO V3.0, 66–106 kW (3×100 … 3×160 A)
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
Regulation is common to all three phases, so all of them receive the same voltage correction. For this reason the unit is designed for a symmetrical load, and the permitted imbalance is up to 50 %. If consumers are spread across the phases roughly equally, common regulation is enough. The output voltage is held to ±1 % RMS and efficiency exceeds 98.5 %. The rated voltage is 380/400/415 V and the frequency is 50/60 Hz. Lower powers from 3.5 to 32 kVA are built in the Ministab T series and larger ones from 22 to 800 kVA in the Sterostab T series, so both variants are available where the ranges overlap.
How to choose
Common regulation suits a case where the phases are loaded about equally and the imbalance does not exceed 50 %. With a larger skew you need Ministab / Sterostab Y with per-phase regulation and imbalance up to 100 %. For a single-phase 220/230/240 V network there is the Ministab / Sterostab M series at 1–350 kVA. If the task is only to cut consumption, look at the Ecostab optimizers at 8–2800 kVA or Ecobuck at 5–4000 kVA.
Request a price and lead time
Ministab / Sterostab T — three-phase voltage stabilizers with common regulation, 3.5–800 kVA. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What power ratings do Ministab T and Sterostab T have?
Ministab T is made for 3.5–32 kVA and Sterostab T for 22–800 kVA.
What load imbalance is permitted?
Up to 50 %, because regulation is common to all three phases. For a larger skew look at the Y version, where up to 100 % is acceptable.
What are the accuracy and efficiency?
Accuracy is ±1 % RMS and efficiency is above 98.5 %.
What supply voltage and frequency are supported?
The rated voltage is 380/400/415 V and the frequency is 50/60 Hz.
What is the difference between the T and Y series?
In the T series regulation is common to all three phases, while in the Y series each phase is regulated separately. Imbalance tolerance is accordingly up to 50 % against 100 %.
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