DCD-column single-phase isolating switch
Product characteristics
The base is made of high intensity steel plate treated through hot dip galvanized anticorrosive technology, which guarantees reliable operation and anticorrosive properties. It also adopts square neck bolt combining with the square holes on the base plate, which is convenient for installation.
Post insulator is made of high intensity silicon-rubber insulator, which not only reduces weight of the product but also has excellent water-soluble property . The design of large creepage enables the product to reach IV degree pollution.
The adoption of symmetric dual-static contactor on main circuit design, which enables DCD to form double-circuit conduction in the meanwhile locks the turning part to non-main conductive circuit, guarantees lower temperature rise in state of normal condition (experimented current of temperature rise is rated current by 1.1 times).The elements of the main conductive circuit are treated through sliver-plated technology, which strengthens the conductive property of the isolated switch.
Wiring terminal contactor adopts double-hole wiring copper row. The size of the copper row hole and the hole interval conforms to domestic custom, which is convenient for customer installation.
Disconnector limit device can strengthen the stability of disconnetor when disconnector works. It has two limit approaches, one is 90 degree, and the other is 160 degree; the default model is 160 degree when the device leaves from factory , and user can adjust the limit position if needs 90 degree or non-limiting operation. Specification operation please refers to instruction.
Operation pull-ring
The lever-design between pull-ring and turning lock-pin is easy to realize disconnector-opening operation and improve capability of ice-broken.
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Product type |
DCD-12/630 |
DCD-12/900 |
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Rated voltage |
12KV |
12KV |
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Rated current |
630A |
900A |
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Rated frequency |
50Hz |
50Hz |
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Rated short withstand current |
25KV/3s |
25KA/3s |
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Rated peak withstand current |
65KA |
65KA |
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Rated power frequency withstand voltage (dry test in one minute) |
To earth |
54KV |
54KV |
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Across open distance |
61.5KV |
61.5KV |
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Rated power frequency withstand voltage (wet test in one minute) |
To earth |
38.5KV |
38.5KV |
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Across open distance |
46.5KV |
46.5KV |
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Lighting impulse withstand voltage |
To earth |
110KV |
110KV |
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Across open distance |
110KV |
110KV |
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Creepage distance |
greater than or equal to 496mm |
greater than or equal to 496mm |
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Creepage proportion |
greater than or equal to 41mm/KV |
greater than or equal to 41mm/KV |
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Loop resistance |
less than or equal to 62 |
less than or equal to 46 |
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Mechanical life |
2500CO |
2500CO |
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Weight |
approximately equal to 7kg |
approximately equal to 8kg |
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Chongqing Yueda Electric Equipment Co., Ltd. is a high-tech enterprise which specializes in researching and development, design, manufacture and sale of transmission equipment and importing high-tech product system integration and service. Our company manufactures and sales the following products: YD-300/800 serial power station/substation microcomputer relay protection device, YD-SCADA substation/power station synthetical automation system , YD-SCADA-1000 hydropower station monitor protection system, YD-SCADA-2000 power dispatch automation system, online monitoring and network computer, PowerMaster serial direct current power source system, SEL serial protective automation system imported original from America, ABB protective automation system, compact substation, high/low voltage switch box, cable branch box, reactive power compensation device, Environment protection non-metal box, dry-type transformer and oil immersed transformer. Our company was established June, 2005, with registered capital 5 million, which is located in Chongqing Gangcheng Industrial Park. It includes a manufacturing workshop, manufacturing base covering an area of 8 acres, manufacturing workshop and office building covering 5000 square meter. Our company has a high-qualified management and technical team , and we are pursing of combining manufacturing with researching and development, which realizes CAD design for electric complete set of equipment and production process management micro-computerization. Our company adhere to the development orientation for invention and innovation, continuously researching and developing technology and product to gradually accumulate of our own intellectual property system. We think talents as our main human resource and provide them with open and equal development opportunities. The company has a set of complete systems for development, logistics, manufacturing, quality, sales and service, insisting on professional management and development road. For completely understanding customers, we develop our own specialty to purse excellent quality and service, and steady development. The company has established long-term cooperation with ABB, GE, Schneider and other word famous enterprises in various forms. With management idea of "quality larger than victory", we provide customers with advanced technology, reliable quality and good service products. Welcome new and old friends to visit and guidance our company!
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