A-12 ZnO surge arrester ordering reference
This catalog entry identifies model A-12, SKU SW-0484, with 12kV and 10kA references. State the system requirements separately and request the model datasheet to establish what each rating represents. A matching voltage number alone is not enough to approve an arrester.
Published reference and selection data| Item | Catalog reference | Confirm for the proposed model |
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| Model and SKU | A-12; SW-0484 | Manufacturer designation, drawing and supplied accessories. |
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| Voltage reference | 12kV | Rated voltage Ur and continuous operating voltage Uc / MCOV. |
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| Current reference | 10kA | Meaning of the declared current, impulse waveform and applicable classification. |
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| Protection level | Request model data | Residual voltage at the specified current and equipment insulation coordination. |
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| Outdoor installation | Outdoor line application | Housing, creepage, pollution requirement, terminals, base and earthing connection. |
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Match the arrester to the electrical system
Provide nominal and highest system voltage, frequency, earthing arrangement and the equipment to be protected. Request continuous operating voltage, temporary overvoltage capability and the applicable protection data for the proposed model. Keep a discharge-current reference separate from a short-circuit withstand requirement.
The mounting drawing should show terminal interfaces, connection leads, earthing connection and any disconnector or bracket required. Confirm the installation environment and maintenance access with the project specification.
IEC 60099-4 addresses gapless metal-oxide arresters for AC systems; IEC 60099-5 provides selection and application guidance. Confirm the applicable standard edition and model-specific documents. An entry in a standards field is not a certificate for every supplied variant.
Prepare an outdoor arrester RFQ
For distributor orders, list model, quantity, accessories, labels and packaging. For project procurement, include system data, equipment insulation requirements, outdoor conditions, mounting drawing and the document schedule.
Browse lightning and surge protection products and coordinate the earthing connection with the grounding and lightning protection package. The substation earthing BOM guide helps list the related conductors and connection parts.
Request A-12 arrester data and quotation