Value for money
1) Integrator: familiar with the equipment in the computer room, complete matching, overall settlement, and high price.
2) Equipment manufacturers: It can accurately match the jack form and power parameters with the sales of equipment such as servers, routers, switches, etc., and package and settle with the equipment, and the price is moderate.
3) Cabinet factory: The cabinet factory is a sheet metal factory, and it has no production qualifications for electrical devices, especially the OEM of the cabinet factory. The quality control and product changes are poor, the price is confusing, the fish and the fish are mixed, and it is difficult to identify, but the installation Convenience. Pack and settle with the cabinet.
4) Professional power supply providers: such as column head power distribution cabinets and PDU professional sellers, you can get professional guidance and help, flexible customization, standardized configuration, high security, and low price, just need to be settled separately.
5) Domestic and foreign brands: foreign brand certification is complete, quality assurance; but the price is high, the delivery period is long, generally takes 6-8 weeks, the socket form is single, and the compatibility with the equipment plug is poor, it is a standard model product, and cannot be customized. ;Complete certification of domestic high-end brand components, complete factory qualifications, single product inspection, medium price (equivalent to 1/3~1/2 of international brands), complete service, and high degree of customization of products; while domestic low-end brands : The certification of components is incomplete and the quality stability is not high. Most of them are products assembled by small speculative factories. The factory has no qualifications or uses the qualifications of others. The parameters are chaotic and the behavior is bold. Some can also be customized, and the price is extremely low. Instead of using this PDU, it is better to use an authentic high-end brand power strip.
Planning and selection
In many computer room bidding, the PDU is not listed as a separate line like UPS, column head cabinet, cabinet and other equipment, and the required PDU parameters are also very unclear, and some even just indicate the power strip, which will cause great trouble in the later work. : That is, unable to match with other equipment, non-standard power supply, serious shortage of budget, etc. The main reason for this phenomenon is that both parties in the bidding and tendering are not clear about how to mark the required PDU? Here is a simple method for you:
1) The circuit power of the distribution branch of the column head cabinet + safety margin = the sum of the power of the PDUs on this line;
2) The number of devices in a cabinet + safety margin = the number of jacks of all PDUs in the cabinet. If there are dual redundant lines, the number of PDUs should be doubled according to the parameters.
3) Disperse the high-power equipment in different PDUs as much as possible to balance the current of each phase;
4) The hole pattern of the PDU is customized based on the device plugs whose power cords cannot be separated. Once the device plugs whose power cords can be separated are incompatible, the power cord can be replaced to solve the problem;
5) If the equipment density in the cabinet is high, the PDU should be installed vertically with multiple jacks. If the equipment density in the cabinet is low, the PDU should be installed horizontally with fewer jacks. Finally, a separate quotation budget should be given to the PDU to avoid serious shortage of budget.
Shopping points
1) Choose the product that suits you according to your specific situation;
2) Choose products from regular manufacturers (of course, some manufacturers may also be regular manufacturers, but PDU may not be their dominant product, so you should be careful when choosing. Although a veterinarian is also a doctor, you cannot think that as long as he is a doctor, he is also a famous doctor. he);
3) The state has relevant quality inspection and certification for various products. When choosing PDU products, you must first look at the qualifications of the manufacturer, and then look at the quality certification of the product. It is safer to choose regular products;
4) After summarizing the above, then understand the after-sales service of related products (no matter how good a product is, no one can guarantee that it will not be broken, so after-sales service is also a key issue; and remember that after-sales service cannot only be said by word, it is recommended to take root. , put it in words);
5) When choosing a PDU, you must first look at the manufacturer’s qualifications and factory certification documents to ensure the reliability of processing; secondly, look at the product qualifications, testing documents, product manuals, identification nameplates, etc. to ensure the product. normative. PDU is a customized product dedicated to power distribution in the computer room. The experience value of matching the power consumption of equipment in the computer room is the most valuable. Therefore, the experience of the manufacturer is an important indicator to test the stability and professionalism of the PDU product. Pre-sales guidance: Whether there is pre-sales guidance is an important sign of whether a PDU manufacturer is professional or not. If you do not have professional guidance when selecting and customizing, you will pay a painful cost in the later stage: the equipment cannot use electricity, the power matching is insufficient, the grounding is poor, and even Burned equipment and power line interruptions will follow suit.