Injection Moulding Machine Power Requirements

 A new press arrives at your plant, and the electrician opens the cabinet. The rating plate says 380 V, 50 Hz, but your plant runs 480 V at 60 Hz. That one mismatch can delay startup by weeks. So, check your injection moulding machine power requirements before you order to prevent it.

Power affects more than the cable plug. Supply voltage, grid frequency and connected load decide your cable size, breaker, transformer and monthly bill. Also, an unstable grid can trip servo drives and stop production mid-shift.

This short guide covers three power checks every buyer should make. It also lists the grid supply for buyers in the USA, UK, Türkiye, Malaysia, the Gulf and Africa.

Quick Answer: Injection moulding machine power requirements come down to three numbers: three-phase voltage, grid frequency (50 or 60 Hz) and connected load in kW. The machine must match your grid within about ±10% voltage and ±1% frequency. Then size cables, breakers and any transformer for the full connected load.

Injection Moulding Machine Power Requirements by Country

Every injection moulding machine needs motors and heaters rated for your local voltage and frequency. Most markets supply 380–415 V three-phase at 50 Hz. However, the USA and Saudi Arabia run at 60 Hz, and many US plants use 480 V. So, give your supplier both numbers before production starts.

Frequency matters because it changes motor speed. A standard induction motor built for 50 Hz spins about 20% faster on a 60 Hz grid. As a result, pumps, fans and chiller motors can overload. Servo drives cope better, but heaters, contactors and auxiliary motors still need the right rating.

The IEC 60204-1 standard for machine electrical equipment sets the limits. Under it, a machine must work from 90% to 110% of its rated voltage. Frequency must stay within 1% during normal running. Therefore, if your grid swings more than that, plan for a voltage stabiliser.

Market	Three-phase voltage	Frequency	What to tell your supplier
USA	480 V (some plants 208 V)	60 Hz	60 Hz motors; ask about NFPA 79 wiring
Saudi Arabia	400 V	60 Hz	60 Hz motors and pumps
UK	400 V	50 Hz	UKCA or CE marking
Türkiye	400 V	50 Hz	CE marking
Malaysia	415 V	50 Hz	415 V rated transformer taps
UAE	400 V	50 Hz	Cabinet cooling for summer heat
Qatar	415 V	50 Hz	Cabinet cooling for summer heat
Yemen	400 V	50 Hz	Voltage stabiliser and surge protection
South Africa	400 V	50 Hz	Controller UPS for grid outages
Morocco	380 V	50 Hz	380 V rated motors and heaters

Nominal values from mains electricity data by country. Always confirm the supply at your own site.

How to Size the Connected Load

Connected load is the most power the machine can draw at once. It covers the pump or servo motors plus the barrel heaters, and it grows with tonnage. Use it to size the main breaker, cables and transformer. Running power is lower, often 40–60% of connected load on a servo machine.

As a rough guide, a 100–150 ton servo-hydraulic press needs about 20–30 kW. A 300 ton machine usually sits around 45–65 kW, while a 1,000 ton press can reach 120–180 kW. Barrel heaters make up about a quarter to a third of that total. Always confirm the exact figure on the supplier's spec sheet.

Next, add the auxiliary equipment. Dryers, chillers, loaders and robots often add 20–40% on top. For example, a 300-ton press with a dryer and chiller may need about 80 kW at the panel. Also, if your plant voltage differs from the machine's, size the step-down transformer at about 1.25 times the connected load.

How to Protect Your Injection Moulding Machine From a Weak Grid

Voltage dips, spikes and outages can damage servo drives and controllers. They also scrap parts in the middle of a cycle. So, fit surge protection, add a stabiliser where the grid swings, and put the controller on a UPS. Good earthing matters too. These steps cost little next to a burnt drive.

Grid quality varies across the target markets. For instance, plants in Yemen and parts of Africa often see frequent dips and outages. In those sites, a stabiliser sized for the full connected load is a sound investment. A small UPS also lets the controller save its data and shut down safely.

Heat is the other risk. Summer air in Saudi Arabia, the UAE and Qatar often passes 45 °C. Servo drives lose output in a hot cabinet, so ask for a cabinet air conditioner or larger fans. In addition, keep the electrical room shaded and well ventilated.

Order a Press That Starts on Day One

The easiest fix is to send your power data with your first enquiry. List your voltage, frequency, available kW and any transformer details. A good supplier then sets the motors, heaters and cabinet for your site before the machine leaves the factory.

Before you sign, ask for the electrical drawing and the motor nameplate data. Then check the rated voltage, frequency, connected load and breaker size against your site survey. Also confirm the cabinet's temperature rating if your plant runs hot. A short check now saves a costly rewire later. If anything does not match, fix it on paper, not on the factory floor.

Daoben Machinery builds machines from 30 to 4,000 tons and exports to more than 35 countries. To compare models and tonnage options, browse the Daoben plastic injection moulding machine range. Then share your plant details for a quote that matches your grid.

Injection Moulding Machine Power Requirements: FAQs

Can I run a 50 Hz injection moulding machine on a 60 Hz grid?

It is not a good idea. On 60 Hz, standard 50 Hz motors run about 20% faster, which can overload pumps and fans. Heaters and contactors may also fall outside their rating. Instead, order the injection moulding machine with 60 Hz motors, or use a frequency converter sized for the full load.

How much electricity does an injection moulding machine use per hour?

A servo-hydraulic injection moulding machine usually draws 40–60% of its connected load while running. For example, a 300-ton press rated at 55 kW may use about 22–33 kWh per hour. The exact figure depends on cycle time, resin, barrel temperature and how often the machine idles.

Do I need a transformer for an imported injection moulding machine?

You need one only if your plant voltage differs from the machine's rated voltage. For example, a 380 V injection moulding machine in a 480 V US plant needs a step-down transformer. Size it at about 1.25 times the connected load. Better still, ask the supplier to build the machine for your voltage.

What voltage does an injection moulding machine use?

Most industrial machines run on three-phase power. In the UK, Türkiye, the Gulf, South Africa and Morocco, that means 380–415 V. In the USA, 480 V is common. So, order your injection moulding machine for your local supply and check the power data first.