Keep your moulding shop running at full capacity — protect Windsor, L&T, Milacron, Toshiba, Haitian, and Engel machines from voltage fluctuations that cause barrel temperature drift, short shots, and hydraulic pump failures.
From single-machine job shops to 50+ machine automotive moulding plants — VoltaPex protects every injection moulding asset.
High inrush hydraulic pump motors and barrel heaters need stable 3-phase voltage for consistent shot weight.
Servo-driven electric machines — voltage fluctuation causes position errors and mould protection faults.
Combined servo and hydraulic systems — dual protection for electronics and high-power hydraulics.
Multi-zone barrel heaters — voltage dips cause temperature drift, material degradation, and colour variation.
Clamp force consistency depends on stable hydraulic pressure from regulated voltage supply.
Precision hot runner temperature controllers — voltage instability causes gate freeze-off or drool.
Take-out robots and sprue pickers — voltage dips cause missed picks and mould damage.
Desiccant and hot air dryers — voltage instability causes dew point problems and wet material.
Water and oil TCUs — pump and heater stability required for consistent mould surface temperature.
Process chillers for mould cooling — compressor motors need stable voltage for efficient operation.
High-torque granulator motors — voltage dips cause stalling and motor burnout on start-up.
Masterbatch dosing and blending — motor speed variation affects additive ratio consistency.
Plant-wide compressed air — compressor motor life depends on stable voltage, especially during start-up.
Post-moulding decoration — voltage stability required for consistent print quality and foil transfer.
Manufacturing execution system servers and machine monitoring — clean power for data integrity.
Injection moulding machines draw massive inrush current when hydraulic pumps start under load. VoltaPex stabilizers handle 3× rated current for motor starting — no voltage sag, no contactor chattering, no PLC resets.
Voltage variation of ±10% causes barrel temperature drift of 15–25°C on uncontrolled zones. VoltaPex ±1% output ensures heater elements receive design voltage — eliminating temperature-related defects.
Screw rotation speed varies with voltage in hydraulic machines. Stabilized voltage = consistent screw RPM = consistent shot weight = reduced dimensional variation and reject rate.
Moulding plants run continuously. Oil-cooled stabilizers handle high ambient temperatures (45°C+) without derating — no forced cooling fans to fail, no dust ingress problems common in moulding environments.
Hydraulic pump motors instantly reverse direction on phase reversal — destroying pumps and causing safety hazards. VoltaPex includes automatic phase monitoring and shutdown.
| Input Voltage Range | 300V – 470V (3-Phase) |
| Output Voltage | 415V ± 1% |
| Overload Capacity | 300% for 10 sec (motor start) |
| 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 / IP-54 |
| Insulation Class | Class F / Class H |
| Capacity Range | 20 KVA – 500 KVA |
| Standards | IS 9815, IEC 61558, CE |
From a 100-ton machine to a plant with 50+ machines — VoltaPex has the right stabilizer for every moulding operation.
| KVA Rating | Moulding Machine Application | Input Range | Cooling | Phase |
|---|---|---|---|---|
| 20–25 KVA | Small IMM (60–150 Ton) | 300–470V | Air | 3-Phase |
| 30–40 KVA | Medium IMM (200–350 Ton) | 300–470V | Air | 3-Phase |
| 50–60 KVA | Large IMM (450–650 Ton) | 300–470V | Air/Oil | 3-Phase |
| 75–100 KVA | Heavy IMM (850–1300 Ton) | 280–480V | Oil | 3-Phase |
| 120–150 KVA | Extra Large (1500–2000T) | 280–480V | Oil | 3-Phase |
| 200–300 KVA | Multi-Machine Bus (4–6 IMMs) | 260–480V | Oil | 3-Phase |
| 400–500 KVA | Full Moulding Plant (15+ IMMs) | Custom | Oil | 3-Phase |
Injection moulding is a precision thermal-mechanical process where every gram of shot weight, every degree of barrel temperature, and every second of cycle time impacts part quality and profitability. Voltage fluctuations — common in Indian industrial areas — directly affect all three of these critical parameters.
A 10% voltage dip on a 500-ton Windsor machine changes heater output by 21%, causing temperature drops of 20–30°C in barrel zones. This results in short shots, unmelted material, screw stalling, and potentially screw breakage — a ₹3–8 lakh repair. A servo stabilizer eliminates this risk for under 10% of that repair cost.
Heater bands are resistive loads where power varies with voltage squared (P = V²/R). A 10% voltage drop means 19% less heating power. The PID controller compensates by running heaters at 100% duty cycle — still not reaching setpoint. Result: cold material, screw overload, and potential screw breakage.
In hydraulic machines, screw RPM is directly proportional to hydraulic motor speed, which varies with pump motor speed, which varies with input voltage. Electrical voltage fluctuation = screw speed variation = inconsistent plasticizing = shot weight variation.
IMM hydraulic pumps are the single most expensive component after the screw-barrel assembly. Low voltage causes increased current draw (I = P/V), overheating motor windings. Each 10°C rise above rated temperature halves insulation life. Regular voltage dips can reduce motor life from 15 years to 3–4 years.
Answers for moulding plant managers and maintenance heads.
Get a free injection moulding plant power audit and custom stabilizer recommendation from our plastics industry power specialists.