Power Transformers
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This page explains how Tap Changer is classified within Electrical Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
A device used to adjust the voltage ratio of a power transformer by changing the number of turns in the winding.
Technical details and manufacturing context for Tap Changer
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Rated Voltage | 10–35 kV | System voltage classIEC 60214-1 |
| Rated Current | 200–1250 A | Continuous current capacityIEC 60214-1 |
| Number of Steps | 8–27 | Total tap positions |
| Step Voltage | 100–3000 V | Voltage change per step |
| Switching Capacity | 100–2000 kVA | Max load switching capabilityIEC 60214-1 |
| Operating Temperature | -25–70 °C | Ambient rangeIEC 60214-1 |
| Degree of Protection | IP54–IP65 | Enclosure sealingIEC 60529 |
| Insulation Level | LI 75–170 kV | Lightning impulse withstandIEC 60076-3 |
| Mechanical Life | 500000–1000000 operations | No maintenance cyclesIEC 60214-1 |
| Electrical Life | 200000–500000 operations | At rated switching capacityIEC 60214-1 |
| Contact Resistance | ≤50 µΩ | Per contact pairIEC 60214-1 |
| Weight | 50–300 kg | Depending on rating |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
Commonly used trade names and technical identifiers for Tap Changer.
This component is essential for the following industrial systems and equipment:
| pressure: | Atmospheric to 1.5 bar (sealed tank pressure) |
| other spec: | Voltage rating: Up to 500kV, Current rating: Up to 3000A, Switching capacity: 10-100 operations per day |
| temperature: | -40°C to +105°C (typical for insulating oil environment) |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
3 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.
Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.
A practical evidence checklist for RFQ preparation and supplier evaluation.
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A tap changer adjusts the voltage ratio of a power transformer by changing the number of turns in the winding, enabling voltage regulation to compensate for load variations.
Typical rated voltage is 10–35 kV and rated current is 200–1250 A, but these are reference ranges and must be confirmed for the specific model.
Relevant standards include IEC 60214-1 for tap changers, IEC 60529 for degrees of protection, and IEC 60076-3 for insulation levels. These are verification references.
Check the model-specific parameters such as voltage, current, number of steps, and switching capacity against your application requirements, and confirm with the legal manufacturer or supplier.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.
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