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Special Machinery Solutions

Voltage instability kills productivity.
We make it bulletproof.

From CNC spindles to MRI magnets, elevators to data centres — AltraVolt servo stabilizers and isolation transformers keep mission‑critical machinery running at peak performance, 24/7.

Engineered for harsh industrial environments · 45 years
Industrial machinery protected by AltraVolt power solutions
Precision machining

CNC & Machine Tools

Voltage sags cause spindle encoder errors and servo drive nuisance tripping.

Modern CNC controllers rely on tight voltage rails for servo amplifiers and spindle drives. A sag of just 15% can reset the controller, corrupt tool offsets, or trigger an E-stop — scrapping parts and wasting hours of setup time. Harmonic distortion from other plant loads further degrades position feedback, leading to surface finish defects.

Our servo stabilizers deliver ±0.5% regulation with <50ms response, ensuring the control electronics see a clean, stable supply even when the grid dips during heavy motor starts.

Recommended AltraVolt Product Three‑Phase Servo Stabilizer Suggested rating: 50 KVA – 500 KVA (depending on spindle load)
  • Input range ±20%
  • Accuracy ±0.5%
  • Response <50 ms
  • Isolation Optional
Laser cutting / engraving

Laser Systems

Fluctuations affect beam quality and power supply stability.

Laser resonators and RF excitation supplies demand an extremely stable DC bus. Voltage ripple or sags can cause mode hopping, power drift, and inconsistent cut quality — especially critical in medical device or aerospace component manufacturing. CO₂ and fibre lasers are equally sensitive; a 5% input change can shift output power by over 10%.

Our isolation transformers with electrostatic shielding attenuate common-mode noise, while the servo stabilizer holds the input to the laser power supply within ±1%, ensuring repeatable pulse energy and edge quality batch after batch.

Recommended AltraVolt Product Three‑Phase Servo + Isolation Transformer Suggested rating: 30 KVA – 150 KVA (depending on laser wattage)
  • Line regulation ±1%
  • Noise attenuation >60 dB
  • Efficiency ≥98%
  • Isolation Electrostatic shield
Injection moulding

Injection Moulding Machines

Heaters and motors need stable voltage for cycle consistency.

Injection moulding combines high-current barrel heaters, hydraulic pump motors, and servo-driven clamping units. Voltage dips during motor start can cause heater controller overshoot, leading to melt temperature variations — resulting in sink marks, warpage, or short shots. Simultaneously, harmonics from variable frequency drives (VFDs) can interfere with PLC analog inputs.

Our three‑phase servo stabilizers with built-in harmonic filtering maintain a clean sinusoidal output, while the fast correction loop (<50 ms) keeps the moulding cycle repeatable, reducing scrap rates by up to 30% in our customer installations.

Recommended AltraVolt Product Three‑Phase Servo Stabilizer (with harmonic filter) Suggested rating: 75 KVA – 600 KVA (machine-dependent)
  • Correction speed <50 ms
  • THD reduction <5%
  • Overload capacity 150% for 10s
  • Cooling Forced air / oil
Textile machinery

Textile & Spinning

Speed variations affect yarn tension and fabric quality.

Spinning frames, weaving looms, and finishing ranges rely on precise synchronous motor speeds. Even a 3% voltage fluctuation changes the torque-speed curve, causing uneven twist, broken threads, or shading defects in dyed fabrics. The problem is compounded when multiple machines start simultaneously in a weaving shed.

Our servo stabilizers provide a regulated voltage that holds motor speed within 0.5%, ensuring consistent yarn count and fabric density. Optional isolation transformers further eliminate ground loops that can disrupt electronic dobby controls.

Recommended AltraVolt Product Three‑Phase Servo Stabilizer Suggested rating: 30 KVA – 300 KVA (section-wise distribution)
  • Voltage regulation ±0.5%
  • Frequency response 50/60 Hz
  • Phase balance <1% unbalance
  • Enclosure IP54 (dust-proof)
Printing presses

Printing & Packaging

Registration errors from voltage noise and sags.

High‑speed offset and flexo presses use encoder‑driven servo motors for plate registration, tension control, and die‑cutting. Voltage sags as short as 20 ms can cause registration drift, misregister between colours, and wasted substrate. Additionally, RFI from variable‑speed drives can corrupt the vision‑system sensors used for print inspection.

Our isolation transformers with Faraday shields attenuate high‑frequency noise, while the servo stabilizer holds the line voltage within ±0.5%, keeping your press running at its rated speed without costly restarts or rework.

Recommended AltraVolt Product Three‑Phase Servo + Isolation Transformer Suggested rating: 20 KVA – 150 KVA (press line dependent)
  • Noise rejection >100 dB
  • Sag ride‑through 30 ms
  • Regulation ±0.5%
  • Harmonic filter Optional
Pharmaceutical manufacturing

Pharma & Biotech

Critical processes require zero downtime and regulatory compliance.

In pharma, voltage disturbances can halt production lines, compromise temperature‑controlled storage, or affect analytical instruments like HPLC and mass spectrometers. The FDA and EMA demand documented power quality for validated processes — any deviation can trigger an investigation.

Our servo stabilizers with data logging provide a complete record of input/output voltage, current, and events, meeting GMP traceability requirements. Combined with isolation transformers, we offer galvanic isolation to protect sensitive bioreactor controllers and ensure batch‑to‑batch consistency.

Recommended AltraVolt Product Three‑Phase Servo + Isolation (with data logging) Suggested rating: 10 KVA – 200 KVA (process‑dependent)
  • Data logging RS485 / Modbus
  • Isolation Galvanic, 4kV
  • Regulation ±0.5%
  • Standards IS, IEC, GAMP
Medical imaging

MRI, CT & X‑Ray

Imaging artifact risk from noise; isolation per IEC 60601‑1.

MRI magnets and gradient amplifiers require ultra‑clean power with extremely low leakage currents. Voltage ripple or common‑mode noise can introduce artefacts in the reconstructed image — potentially misdiagnosing a patient. CT scanners also demand stable kV for consistent X‑ray output.

Our isolation transformers are specifically designed to meet IEC 60601‑1 medical electrical safety requirements, with low leakage capacitance (< 100 pF) and electrostatic shielding. The servo stabilizer ensures the imaging system sees a steady voltage, eliminating retakes and improving patient throughput.

Recommended AltraVolt Product Medical‑Grade Isolation Transformer + Servo Stabilizer Suggested rating: 10 KVA – 100 KVA (depending on imaging system)
  • Leakage current <100 µA
  • Isolation voltage 4 kV RMS
  • Regulation ±0.5%
  • Standard IEC 60601‑1
Data centres

Data Centers & IT

Servers and UPS need clean, stable power for 99.999% uptime.

Data centre power chains include UPS, PDUs, and server power supplies. While UPSs provide backup, they are sensitive to input voltage distortion and sags — which can cause premature battery drain or transfer to bypass, exposing downstream servers to raw utility fluctuations. Harmonic currents from switch-mode supplies also increase neutral currents and transformer heating.

Our servo stabilizers with low output impedance and wide input range (up to ±40%) clean up the feed before the UPS, reducing battery cycling and extending UPS life. For high‑density racks, we offer isolation transformers with harmonic mitigation to keep neutral‑to‑ground voltages below 1 V.

Recommended AltraVolt Product Three‑Phase Servo Stabilizer (for UPS front‑end) Suggested rating: 100 KVA – 1000 KVA (data hall scale)
  • Input range ±40%
  • Output THD <3%
  • Efficiency ≥98.5%
  • Monitoring SNMP / Modbus
Elevators & Escalators

Elevators & Lifts

Voltage sag on motor start causes false faults and entrapment.

Elevator drives draw high inrush current during acceleration. This can drag the building supply voltage down, triggering undervoltage protection in the drive controller — leading to nuisance shutdowns, passenger entrapment, and costly service calls. Additionally, regenerative braking can pump harmonics back into the grid, affecting other building loads.

Our servo stabilizers with fast correction hold the drive input voltage above its dropout threshold even during motor starts, eliminating false faults. For high‑rise buildings, we recommend isolation transformers to isolate the elevator power from sensitive building systems like fire alarms and BMS.

Recommended AltraVolt Product Three‑Phase Servo Stabilizer Suggested rating: 20 KVA – 150 KVA (per lift group)
  • Inrush withstand 200% for 5s
  • Regulation ±1%
  • Response <30 ms
  • Enclosure IP54 (machine room)
Tailored to your machine

Need a custom KVA or a special enclosure?

Every industry has unique power challenges. Our engineering team will analyse your load profile and recommend the exact stabilizer or transformer configuration — with custom enclosures, harmonic filters, and remote monitoring to match your plant floor.

Request a custom recommendation Explore custom solutions

📞 +91-XXX-XXX-XXXX  ·  ✉️ sales@altravolt.in