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DCD-column single-phase isolating switch

    DCD-column single-phase isolating switch is a single-phase hookstick operated switch, used for isolating from 12KV overhead transmission line. It is widely used to combine with circuit breaker or load switch to provide safe visible isolating distance for circuit. The switch can realize on-off operation in the state of non-loading. The product conforms with the standard as follows: IEC 62271-102 3.6KV-40.5KV high voltage alternating isolated switch and earthing 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. 

 
Product technical parameter

Product type

DCD-12/630

DCD-12/900

Rated voltage

12KV

12KV

Rated current

630A

900A

Rated frequency

50Hz

50Hz

Rated short withstand current

25KV/3s

25KA/3s

Rated peak withstand current

65KA

65KA

Rated power frequency withstand voltage

(dry test in one minute)

To earth

54KV

54KV

Across open distance

61.5KV

61.5KV

Rated power frequency withstand voltage

(wet test in one minute)

To earth

38.5KV

38.5KV

Across open distance

46.5KV

46.5KV

Lighting impulse withstand voltage

To earth

110KV

110KV

Across open distance

110KV

110KV

Creepage distance

greater than or equal to 496mm

greater than or equal to 496mm

Creepage proportion

greater than or equal to 41mm/KV

greater than or equal to 41mm/KV

Loop resistance

less than or equal to 62

less than or equal to 46

Mechanical life

2500CO

2500CO

Weight

approximately equal to 7kg

approximately equal to 8kg

Product Quality
Brand :
ABB
Lead Time :
30-90
Negotiable :
Negotiable price
Color :
silver
Min.Order :
100   
 
Product Pictures
DCD-column single-phase isolating switch/outdoor HV
 
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