IREM’s MINISTAB and STEROSTAB three-phase voltage stabilisers represent world-class Italian engineering for precise, reliable, and stable voltage control. Designed for industrial and commercial applications, these stabilisers ensure clean, regulated output during voltage fluctuations, load variations, and supply disturbances. Their fan-free design, high efficiency, and independent phase control make them one of the most dependable solutions in the global market.
ELECTROSERVICE supplies, installs, and supports the complete range of IREM MINISTAB and STEROSTAB stabilisers across Pakistan.
We work strictly according to international engineering codes and global standards, including IEC, ANSI, IEEE, NEC, NFPA, ASTM, and NFC. This ensures every project meets high-level performance, safety, and compliance requirements.
Our products are sourced from leading brands such as IREM (Italy), VARSAN (Turkey), Solis, Huawei, ABB, BENY, and others — ensuring long-term reliability and superior value.
| Parameter | Specification |
|---|---|
| Type | MINISTAB Y 3–120 kVA / STEROSTAB Y 45–8000 kVA |
| Input Type | Three-phase |
| Nominal Input Voltage | 380V or 400V or 415V |
| Nominal Output Voltage | Same as input version |
| Output Accuracy | ±1% RMS |
| Frequency | 50/60 Hz ±5% |
| Admitted Load Variation | 0 to 100% |
| Load Unbalance | Up to 100% |
| Admitted Overload | 10× nominal (10 ms), 5× (6 s), 2× (1 min) |
| Harmonic Distortion | <0.1% |
| Efficiency | >98.5% |
| Cooling | Natural air convection (fan-free) |
| Colour | Black or RAL 7035 |
| Protection Degree | IP21 |
| Installation | Indoor |
| Standard Fittings | Digital voltmeter, pilot lamps, tropicalised boards |
| Optional Fittings | Isolation transformer, adapting transformer, neutral point reactor, surge arrester, IP54 enclosure |
| Symbol | Description |
|---|---|
| T | Series transformer (booster) |
| R | Variable autotransformer |
| C | Electronic control circuit |
| M | Servomotor |
| Protection / Feature | Availability |
|---|---|
| Short-Circuit Protection | Yes |
| Overload Protection | Yes |
| Over/Under Voltage Protection | Yes |
| Phase Sequence & Failure Protection | Yes |
| Soft Start | Yes |
| Auto/Manual Bypass | Yes |
| Digital Power Monitor | Yes |
| Isolation Transformer (Optional) | Yes |
| Adapting Transformer (Optional) | Yes |
| Neutral Point Reactor (Optional) | Yes |
| Surge Arrester (Optional) | Yes |
| IP54 Indoor/Outdoor (Optional) | Yes |
Independent regulation on each phase
Italian manufacturing & quality assurance
Robust performance under unstable grid conditions
Fan-free system ensures silent operation and long life
High response speed and stable output
Designed for sensitive industrial equipment
Ideal for factories, hospitals, laboratories, data centres, and automation systems
Industrial automation and process equipment
CNC machines and production lines
Medical imaging and diagnostic systems
Commercial buildings and IT infrastructure
Laboratories and test facilities
Telecom and communication networks
Energy-sensitive load environments
