DAQO GROUP



LD
Air Type Insulation Busbar

LD Type Busbar is the air reinforced insulation busbar with good heat dispersion. As the power trans...

Air Type Insulation Busbar

LDType Busbar is the air reinforced insulation busbar with good heat dispersion.As the power transmission and distribution system for large current, it is usedto as the connection between the LV switchgear, transformer and heavy dutyload. It can meet the requirements of buildings in different regulations withits large scope of current and all kinds of structures. Its novel and flexibledesign can also offer the clients various solutions.

Product Features

1.       Quick Installation

Thecompact design of LD busbar system can save a lot of space. The connection betweenthe tap-off and busbar relies on the bolt so as to reduce the installationcost. Meanwhile, the system provides all kinds of site installation ways, sothe customer has the option of flexibility in accordance with the siteconditions. During installation at site, it’s only the wrench torque to tightenthe single bolt terminal; this special wrench torque will be equipped on thedelivery.

2.      Reliableand Safe System

Thecover of IP31 busbar system has the ventilation hole to improve the heatdissipation, so it has the big current capacity. The protection level of busbarwith the closed cover can reach IP54, which means it can adapt to all harshconditions. Meanwhile, the body of busbar is of high rigidity. As the influenceof thermal deformation to the system has been taken into the consideration, itcan ensure the reliability of system. The make-before-break ground electrodeand zero line can guarantee the personal safety as electricity was consumed.

3.      Connectionof LD System and Transformer

Thetransformer can transmit the electricity for the large equipment and LVdistribution cabinet through the LD system. The standard connection terminal ofLD system can be connected with various types of specification for thetransformer. To avoid the vibration to the whole system during the operation ofthe transformer, the flexible connection can be equipped between the twoconnection terminals. The flexible connection can be equipped between the twoconnection terminals; the maximum current can reach 5000 A.

4.       Fireproof

Thefireproof in the high building is very important, so the special fireproofbarrier has been adopted by the LD busbar. When the fire breaks out, it canstop the smoke, fire, heat spreading to the adjacent room or floor through thebusbar, even the water penetration of the outfire.


Technical Data

Item Data 
Rated Current 1250~5000A 
Protective Class IP31/IP54 
Installation method Edgewise,flat,sideways 
Rated Insulation Voltage 1000V AC/1200V DC 
Rated Operation Voltage 1000V AC 
Frequency 50Hz~60Hz 

Dimensions

Type   LDC042 0DC142 LDC242 LDC342 LDC641/2 LDC741/2 LDC741/2 
Rated current Ie 1000~1250 1250~1600 1600~2000 2000~2600 2600~3400 3200~4400 3600~5000 
Dimension  mm 180 X180 180 X180 180 X180 180 X180 180 X240 180 X240 180 X240 
Ipk  kA 176176176176286286286
PE cross section Icw kA 58585858116116116
Icw(t=1s)(KA)  mm² 5606407201040144020802480
R" ..mΩ/m 0.0350.0310.0270.0190.0140.0090.008
X" ..mΩ/m 0.0210.0210.0210.020.020.020.019
Z" ..mΩ/m 0.0410.0370.0340.0280.0240.0220.021
Voltage drop  v/m 0.0560.0640.0730.0720.0730.0740.085
Kg/m 4 wire system  Kg/m 31.835.338.552.169.995.9112.1
Kg/m 4 wire system  Kg/m     62.38599.1
Kg/m 5 wire system  Kg/m 37.74246.163   
Kg/m 5 wire system  Kg/m     66.995.9112.1
Kg/m 5 wire system  Kg/m     77.5106.83

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