High-Voltage Test Transformer
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This page explains how Tap Changer (if applicable) 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 that allows adjustment of the transformer's output voltage by changing the number of active turns in the winding.
Technical details and manufacturing context for Tap Changer (if applicable)
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Rated Voltage | 10–35 kV | System voltage class of the transformerIEC 60214-1 |
| Rated Current | 100–630 A | Continuous current capacity of the tap changerIEC 60214-1 |
| Number of Steps | 8–27 | Total steps including neutral position |
| Step Voltage | 100–1000 V | Voltage change per step |
| Switching Capacity | 100–1000 kVA | Maximum switching capacity per stepIEC 60214-1 |
| Operating Temperature | -40–85 °C | Ambient temperature range for operationIEC 60214-1 |
| Insulation Level | LI 75–200 kV | Lightning impulse withstand voltageIEC 60076-3 |
| Mechanical Endurance | 500000–1000000 operations | Number of switching operations without maintenanceIEC 60214-1 |
| Degree of Protection | IP54–IP65 | Protection against dust and waterIEC 60529 |
| Weight | 50–500 kg | Depends on rated voltage and current |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is essential for the following industrial systems and equipment:
| pressure: | Atmospheric to 1.5 bar (sealed tank pressure) |
| other spec: | Voltage range: Up to 500 kV, Current rating: Up to 3000 A, Switching capacity: Up to 1000 operations at rated current |
| temperature: | -40°C to +105°C (ambient), -40°C to +150°C (oil temperature) |
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.
Manufacturer profiles associated with Tap Changer (if applicable).
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A practical evidence checklist for RFQ preparation and supplier evaluation.
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The tap changer allows adjustment of the output voltage by changing the number of active turns in the transformer winding. This enables precise control of the test voltage to specific levels required for insulation testing, dielectric withstand tests, or partial discharge measurements.
According to the directory reference, the rated voltage range is 10–35 kV, and the rated current range is 100–630 A. These values are indicative and must be confirmed for the specific model and application with the manufacturer.
Relevant standards include IEC 60214-1 for tap changers, IEC 60076-3 for insulation levels, and IEC 60529 for degrees of protection. These standards are references for procurement and verification; they do not guarantee that a specific product is certified or compliant.
The mechanical endurance is rated for 500,000 to 1,000,000 switching operations without maintenance. After this period, inspection and maintenance of contacts, insulation, and mechanical parts are recommended. Always follow the manufacturer's maintenance guidelines.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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