Protect your CNC investment — Fanuc, Siemens, Haas, DMG Mori, Makino controllers and servo drives — from voltage fluctuations that cause tool crashes, scrap parts, and costly downtime. VoltaPex delivers ±1% precision output.
From high-speed machining centers to precision grinding — VoltaPex servo stabilizers protect every CNC machine tool and production asset.
3-axis and 5-axis vertical machining centers need stable voltage for micron-level precision.
Spindle drives, servo motors and tool changers require clean, regulated power.
Pallet changers and high-torque spindles in horizontal machining centers.
Live tooling turrets and sub-spindle machines need voltage stability for surface finish.
Spark erosion machines — voltage fluctuations affect gap control and cutting accuracy.
Precision die sinking requires ultra-stable voltage for consistent spark generation.
Grinding wheel motors and feed drives need surge-free, stable voltage supply.
Surface finish quality depends on stable spindle speed from regulated power.
CNC gear cutting with synchronized axes requires clean, stable power input.
CMM machines require voltage-stable power for accurate measurement repeatability.
CNC tool grinding for carbide and HSS tools demands voltage-stable motors.
Laser power supplies and motion controllers are extremely voltage-sensitive.
High-pressure pump motors and CNC controllers need stable 3-phase supply.
Wood and metal CNC routers — spindle speed variation ruins workpiece quality.
High-speed PCB CNC machines — micron tolerances demand ultra-clean power.
CNC servo drives cannot tolerate harmonic distortion. VoltaPex outputs pure sine wave — preventing encoder errors, drive faults, and tool path deviations that cause costly crashes.
A 50ms voltage dip during a finishing pass can scrap a ₹2 lakh workpiece. VoltaPex corrects deviations in 10ms — faster than any CNC controller can detect the disturbance.
Over-voltage spikes are the #1 killer of expensive spindle drives and servo amplifiers (₹1–₹5 lakh replacement each). Multi-stage surge protection prevents catastrophic damage.
Automatic bypass allows maintenance without stopping production. 98%+ efficiency means no additional electricity cost — the stabilizer pays for itself within months.
CNC machines are 3-phase devices. Phase loss during operation can destroy spindle motors instantly. VoltaPex includes phase monitoring and automatic shutdown protection.
| Input Voltage Range | 300V – 470V (3-Phase) |
| Output Voltage | 415V ± 1% |
| Single Phase | 230V ± 1% (available) |
| Frequency | 50 Hz ± 0.5% |
| Efficiency | ≥ 98% |
| Response Time | ≤ 10 ms |
| Waveform Distortion | < 1% THD |
| Cooling Type | Air / Oil Cooled |
| Bypass | Automatic (no-break) |
| IP Protection | IP-20 / IP-42 |
| Insulation Class | Class F / Class H |
| Capacity Range | 1 KVA – 500 KVA |
| Standards | IS 9815, IEC 61558, CE |
From a single CNC lathe to a shop with 50+ machining centers — VoltaPex has the right capacity for every machine tool.
| KVA Rating | CNC Machine Application | Input Range | Cooling | Phase |
|---|---|---|---|---|
| 5–10 KVA | CNC Lathe / Turning Center | 170–270V | Air | 1-Phase |
| 15–25 KVA | VMC (Single Machine) | 300–470V | Air | 3-Phase |
| 30–40 KVA | HMC / Large VMC | 300–470V | Air | 3-Phase |
| 50–75 KVA | 2–3 CNC Machines on Bus | 280–480V | Oil | 3-Phase |
| 100–150 KVA | EDM + CNC Shop (5–8 Machines) | 280–480V | Oil | 3-Phase |
| 200–300 KVA | Large Machine Shop (15+ Machines) | 260–480V | Oil | 3-Phase |
| 400–500 KVA | Full Manufacturing Plant | Custom | Oil | 3-Phase |
CNC machines represent some of the most expensive capital equipment in any manufacturing facility — and also some of the most electrically sensitive. A single voltage fluctuation during a precision machining operation can result in a tool crash, scrapped workpiece, damaged spindle, or fried servo drive — costs that range from ₹50,000 to ₹15,00,000 in an instant.
Voltage variations of just ±5% can cause servo drive faults on Fanuc and Siemens controllers. Many CNC shops in Indian industrial areas experience ±15–30% voltage variation during peak hours. Without a servo stabilizer, you're gambling with your CNC investment on every shift.
Servo drives contain sensitive IGBT power modules that fail catastrophically during over-voltage events. A typical Fanuc or Siemens servo drive costs ₹1–5 lakh to replace — and the downtime waiting for replacement can cost even more.
Spindle drives handle the highest power in a CNC machine. Under-voltage causes increased current draw, overheating windings and reducing motor life. Over-voltage spikes can punch through drive insulation instantly.
Even a 30-millisecond voltage dip can cause the CNC controller to reset mid-program — resulting in a tool crash, scrapped workpiece, and potential mechanical damage to the spindle and axis drives.
Servo feedback systems rely on clean power. Voltage noise and harmonics cause encoder reading errors, leading to position drift, surface finish problems, and out-of-tolerance parts.
Answers for CNC machine shop owners and maintenance engineers.
Get a free CNC shop power audit and custom stabilizer recommendation from our machine tool power specialists.