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GB 50343-2012 建筑物电子信息系统防雷技术规范
$31.72
1总则2术语3雷电防护分区 3.1地区雷暴日等级划分 3.2雷电防护区划分4雷电防护等级划分和雷击风险评估 4.1一般规定 4.2按防雷装置的拦截效率确定雷电防护等级 4.3按电子信息系统的重要性、使用性质和价值确定雷电 防护等级 4.4按风险管理要求进行雷击风险评估5防雷设计 5.1一般规定 5.2等电位连接与共用接地系统设计 5.3屏蔽及布线 5.4浪涌保护器的选择 5.5电子信息系统的防雷与接地6 防雷施工 6.1一般规定 6.2接地装置 6,3接地线 6.4等电位接地端子板(等电位连接带) 6.5浪涌保护器 6.6线缆敷设7榆测与验收7.1检测7.2验收项目7.3竣工验收8维护与管理8.1维护8.2管理附录A用于建筑物电子信息系统雷击风险评估的N和Nc 的计算方法附录8按风险管理要求进行的雷击风险评估附录C雷电流参数附录D雷击磁场强度的计算方法附录E信号线路浪涌保护器冲击试验波形和参数附录F全国主要城市年平均雷暴日叛统计表本规范用词说明引用标准名录附:条文说明
Shipping Overview:
• Shipping: Standard Domestic Shipping within the United States charges USD 4.99. Standard International Shipping from United Kingdom, Germany and Japan to the United States charges 14.99.
• Order Processing: Please allow 1-2 business days for order processing and preparation before shipment.
• Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. The average transit time is 3-7 business days.
• International Shipping: Currently, we only ship within the USA.
• Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.
Shipping Delays:
Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.
Shipping Options:
Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.
Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.
Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.
Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.
Delivery Details:
Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.
Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.
Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.
Shipping Confirmation:
You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.
Order Modifications:
If you need to cancel or modify your order, please contact our customer support immediately.
Issues with Delivery:
If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.
Customer Support:
Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.
Return & Refund Policy Overview
Please review our return and refund policies below to ensure a smooth transaction process.
Return Policy
Duration: You have 30 days from receiving your item to initiate a return.
Condition: Items must be unworn, unwashed, with original tags and packaging intact.
Shipping Costs: Customers are responsible for return shipping costs.
Packaging: Ensure returned items are well-packaged to avoid damage during transit.
Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.
Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.
How to Return
Method: Returns must be sent back by mail to the address provided in the return instructions.
Return Label
Defective Products: Return labels are provided for defective items.
Non-Defective Returns: Customers are responsible for obtaining their return shipping label.
Product Conditions for Return
Eligible Products: Returns are only accepted for items in new condition.
Nonreturnable Items
Certain items are not eligible for return:
Electronic devices after 30 days (e.g., computers, laptops, Kindles)
Gift cards, prepaid game cards
Perishable goods, live insects, some jewelry, some health and personal care items
Customized or personalized products
Items with special shipping restrictions
Refund Policy
Window: Eligible products may be returned within 30 days of delivery for a refund.
Refund Method: Refunds are processed to the original payment method or as store credit for items purchased with gift cards.
Processing Time: Refunds are processed within 3-5 business days after we receive the return; please allow additional time for shipping and bank processing.
Claims
Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.
Exchange Policy
For the quickest service, return your original item and place a new order for the desired product once your return is accepted.
Return Address
EveryMarket Customer Service 2101 E Terra Ln, O'Fallon, MO 63366
Customer Support
Available 24/7 for any questions or assistance needed:
Phone: +1 636-312-5925
Email: cs@everymarket.com
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