China China Supplier D279 Impregnated Dmd For Dry Type Transformer - China High Quality Laminated Bus Bar – D&F manufacturers and Exporter

China Supplier D279 Impregnated Dmd For Dry Type Transformer - China High Quality Laminated Bus Bar – D&F

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China Supplier D279 Impregnated Dmd For Dry Type Transformer - China High Quality Laminated Bus Bar – D&F Detail:

Laminated bus bar, also called composite bus bar, laminated no-inductance bus bar, low inductance bus bar, electronic bus bar, etc. It is a kind of connecting circuit with multi-layer composite structure. Laminated bus bar is composed of multi-layer conductive material and insulation material.

Laminated bus bar is the highway of electric power distribution systems. Compared with the traditional heavy and messy wiring mode, it has such characteristics as low impedance, anti-interference, good reliability, saving space and quick assembly. It is Widely used in rail transit, wind and solar inverters, industrial inverters, large UPS systems or other components that require electric power distribution.

Our production equipment, please visit our facilities.

The laminated bus bars are customized ones based on users’ drawings and technical requirement. All our engineers in the technical teams have over ten years of experience of developing and producing laminated bus bars, they can help users to optimize the product structure and they are sure to supply a high quality products and satisfactory service to you.

Laminated bus bar 08

Product Characteristics

1) Low inductance coefficient, compact structure, effectively save the internal installation space, increase the heat dissipation area, and effectively control the temperature rise of the system.

2) The minimum impedance reduces the line loss and greatly improves the high current carrying capacity of the line.

3) It can reduce the damage to components caused by voltage commutation and prolong the service life of electronic components.

4) Reduce system noise and EMI, RF interference.

5) High power modular connection structure components with simple and fast assembly.

Advantages Of Laminated Bus Bar

1)Lower inductance

Laminated bus bars are two or more layers of fabricated copper plates stacked together, the copper plate layers are electrically insulated by insulation materials, and the conductive layers and the insulation layers are laminated into an integral whole through related thermal lamination process.

The connecting wire is made into a flat cross section, which increases the surface area of the conductive layer under the same current cross section, and at the same time, the spacing between the conductive layers is greatly reduced. Due to the proximity effect, the adjacent conductive layers flow opposite currents, and they produce The magnetic fields cancel each other out, so that the distributed inductance in the circuit is greatly reduced. At the same time, due to its flat profile characteristics, the heat dissipation area is greatly increased, which is beneficial to the increase of its current carrying capacity.

1) Structure

Compact structure, efficient use of space and well control system temperature.

Reduce the number of components and increase the reliability of the system.

Easy to install and maintain.

Simple and beautiful.

Common copper bar connection

Laminated bus bar connection

3) Performances

Product Parameters

Items	Technical data
working voltage	0~20kV
Rated current	0~3600A
Product structure	Hot pressing edge sealing, hot pressing without edge sealing, hot pressing edge filling
Maximum machining size	900~1900MM
Flame retardant grade	UL94 V-0
Conductor material	T2Cu、1060 AL
Conductor surface treatment	Silver plating, tin plating and nickel plating
Connection mode with device	Press convex, copper column riveting, copper column welding
Insulation resistance	20MΩ~ ∞
Partial discharge	Less than 10PC
Temperature rise	0~30K

Choice Of Conductive Material

The price of laminated bus bar is determined by the material of conductor. According to the actual application requirements, the user can select the optimal performance accordingly.

Material type	Tensile strength	Elongation	Volume resistivity	Price
Cu-T2	196MPa	30%	0.01724Ω.mm2/m	moderate
Cu-TU1	196MPa	35%	0.01750Ω.mm2/m	high
Cu-TU2	275MPa	38%	0.01777Ω.mm2/m	high
Al-1060	—	—	—	low

Production Process Flow Chat For Laminated Bus Bar

Choice Of Insulation Material

The inductance of laminated bus bar is very low, which must be guaranteed by good insulation materials. To meet a series of electrical insulation and environmental requirements, users can make the best choice according to the actual application.

Material type	Density（g/cm3）	Coefficient of thermal expansion	Thermal conductivity W/(kg.k)	Dielectric number（f=60Hz）	Dielectric strength（kV/mm）	Flame retardant grade	Heat Insulation Class(℃)	Water absorption（%）/24h	Price
NOMEX	0.8~1.1		0.143	1.6	17	94 V-0	220		high
PI	1.39~1.45	20	0.094	3.5	9	94 V-0	180	0.24	high
PVF	1.38	53	0.126	10.4	19.7	94 V-0	105	0	high
PET	1.38~1.41	60	0.128	3.3	25.6	94 V-0	105	0.1~0.2	low

Material type	Material characteristic
NOMEX	Excellent fire resistance, heat resistance, good chemical corrosion resistance, good mechanical properties,radiation resistance and flame retardant
PI	Excellent electrical properties, stable chemical properties, very low moisture absorption, flame retardant
PVF	Good electrical properties, chemical resistance, low moisture absorption, low price
PET	Excellent heat resistance, good electrical properties, radiation resistance, flame retardant