Indoor Fixed Drawable Type Vcb Vacuum Circuit Bre | RFQ Sourcing Details
Compact Substations · Quote on request
This is a product procurement detail page: check specs, images, category context and related sourcing paths before sending an RFQ.
Product specs
Buyer's Digest
Use this page as a product-first sourcing checkpoint before sending an RFQ. Category: Compact Substations. Confirm application fit, capacity, materials, destination, lead time and compliance requirements before comparing suppliers.
Original product description
Resistance to vibrations VD4 circuit-breakers are unaffected by mechanically generated vibrations. For the versions approved by the naval registers, please . Tropicalization VD4 circuit-breakers are manufactured in compliance with the strictest regulations regarding use in hot humid-saline climates.
All the most important metal components are treated against corrosive factors according to UNI 3564-65 Standards environmental class C.
Galvanisation is carried out in accordance with UNI ISO 2081 Standards, classification code Fe/Zn 12, with a thickness of 12x10-6 m, protected by a conversion layer mainly consisting of chromates in compliance with the UNI ISO 4520 Standard.
These construction characteristics mean that the whole VD4 series of circuit-breakers and its accessories comply with standards as follows: IEC (climate graph 8 ) IEC (Test B: Dry Heat ) IEC (Test Bd: Damp Heat, cyclic) Altitude The insulating property of air decreases as the altitude increases, therefore this must always be taken into account for external insulation of the apparatus (the internal insulation of the interrupters does not undergo any variations as it is guaranteed by the vacuum).
The phenomenon must always be taken into consideration during the design stage of the insulating components of apparatus to be installed over 1000 m above sea level.
In this case a correction coefficient must be considered, which can be taken from the graph on the next page, built up on the basis of the indications in the IEC 60694 Standards. The following example is a clear interpretation of the indications given above.
Graph for determining the Ka correction factor according to the altitude H = altitude in metres;m = value referred to power frequency and the lightning impulse withstand voltages and those between phase and phase Graph for determining the Ka correction factor according to the altitude H = altitude in metres;m = value referred to power frequency and the lightning impulse withstand voltages and those between phase and phase.
Indoor | Applications and Buyer Notes
Indoor is organized as a sourcing-ready Compact Substations reference. The page combines visible product or company data with structured procurement cues so buyers can compare application fit, specifications, quantity, quality requirements and lead-time questi
Applications
- Initial shortlist building for related product or supplier options.
- Specification and application fit review before bulk purchasing.
- Category, keyword and detail-page comparison before sending an RFQ.
Key specifications
- Category
- Compact SubstationsBased on visible page data; confirm exact value in the RFQ.
- Unit
- setBased on visible page data; confirm exact value in the RFQ.
- power
- frequency and the lightning impulse withstand voltages and those between phase aBased on visible page data; confirm exact value in the RFQ.
Buyer tips
- State quantity range and split-delivery needs before price comparison.
- Add certification, material or inspection standards when they affect acceptance.
- For time-sensitive projects, include target arrival date and destination.
- For special applications, describe operating condition, installation environment and duty cycle.
FAQ
What should buyers confirm first?
Confirm application, specification, quantity, destination and lead-time requirements before comparing offers.
Can buyers inquire when specs are incomplete?
Yes. Add model, material, size, use case and inspection needs in the RFQ to make replies comparable.
How should this listing be evaluated?
Check title, category, specifications and related keywords against the actual sourcing requirement.
Source mix: ugc
Key specifications
Product sourcing keywords
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