The three numbers that matter

Voltage, frequency and phase count together define the supply. A 380 V 50 Hz three-phase supply, common in China and much of Europe, is not interchangeable with 415 V 50 Hz, 440 V 60 Hz or 220 V three-phase. Heater elements, motors, transformers and contactor coils are all specified against these values, so the nameplate must state all three rather than voltage alone.

What changes inside the cabinet

Heater banks are usually wired in groups that can be reconnected in star or delta, or supplied as elements rated for the destination voltage. Motor windings and drive parameters follow the supply. Control transformers step down to the voltage the PLC and sensors expect. Breakers and cable cross-sections are sized for the resulting current, which rises as voltage falls for the same power.

Site realities that override the drawing

Many plants do not receive the voltage they believe they do. Measured voltage at the incoming panel during production can sag well below nominal when heavy loads start, and a line that trips on undervoltage is often blamed on the machine. Ask for a week of logged voltage at the intended connection point, not a single reading.

Frequency and rotation

A 50 Hz machine on a 60 Hz supply runs motors faster unless the drive is reconfigured, which changes pump output and cycle timing. Phase rotation must be checked at the panel, because a reversed phase stops a pump from building pressure and looks like a mechanical fault.

What to settle before ordering

Destination voltage, frequency and phase; whether a neutral is available; the earthing arrangement; the ambient temperature inside the proposed cabinet location; and the standard the buyer's inspector will apply. These four or five answers remove most of the risk from the electrical package.

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Product Snapshot (Structured Summary)

• Product Name: Cup Making Machine and Sheet Extrusion Machine
• Category: Export-configurable plastic machinery
• Primary Use: Forming cups and extruding sheet on the buyer's local power supply
• Representative Models / Specs: FS-8556, HSS-8556 and HAI-8556 cup machines; DSI-PP, LSI series and SI-PE sheet lines
• Materials: PP, PS, HIPS, PVC, PET, PLA, PE and biodegradable materials
• Applications: Export projects in Europe, the Middle East, Africa, Latin America and Southeast Asia