Dense bus duct

In dense busway, the conductors are covered with insulating materials, and the phases are closely stacked through the shell to form a gap-free whole. This type of busbar is It's called intensive bus duct.

product details

Scope Of Application

RTCCX series dense insulated green bus duct is suitable for power supply and distribution systems with AC three-phase four-wire and three-phase five-wire systems, frequency 50-60Hz, and rated current 100~5000A.

It is used to output electric energy from power supply and distribution systems in industries, mines, enterprises and high-rise buildings. It is especially suitable for the renovation of workshops and old enterprises.

Structural Features

Strong heat dissipation ability.

This series of busbars are closely connected to each other, phase to phase and phase to outside: it can withstand large electric stress and stress and can quickly fix the heat of the power station. At the same time, it adopts double-connected steel bar connection.

Joint, effectively increasing the contact area of the can and greatly reducing the moisture rise at the joint.

Flexible Wiring

This series of bus duct plug-in interfaces is flexible and convenient to set up. It can set up a large number of sockets and has strong versatility. When adjusting the position of electrical equipment, there is no need to change the power supply system.

The bus duct complies with IEC439-2 and GB7251.2-1997. The bus duct can ensure normal operation under rated current and 110% rated voltage for a long time.

The bus duct passed the dynamic and thermal stability test according to the data in Table (1), and the bus duct showed no detectable permanent deformation after the test.

RTCCX-2A series bus duct can withstand 3750V.T frequency withstand voltage, and it lasts for 1 minute without breakdown or flashover.

When the rated current is supplied for a long period of time, the temperature rise of the conductive parts shall not exceed the values listed in Table (2).

The Main Technical Parameters

Busbar rated current (A)	Thermal stable current effective value (kA)	Dynamic stable current effective value (kA)
100	16	30
250.4	20	40
630800	25	50
1000	30	63
12501600	35	75
20002503150	55	120
400	80	176
500	90	198

Rated current(A)	Three-phase four-wire system			Three-phase five-wire system
Rated current(A)	W(mm)	H(mm)	Weight(kg/m)	W(mm)	H(mm)	Weight(kg/m)
100	140/150	92	16.9	150	92	17.5
250	140/150	102	19.8	150	102	20.8
400	140/150	102	22.6	150	102	23.9
630	140/150	112	25.3	150	112	26.9
800	140/150	122	27.7	150	122	29.6
1000	140/150	142	32.8	150	142	35.2
1250	140/150	162	37.7	150	162	37.6
1600	140/150	212	52.6	150	212	56.9
2000	150	230	64.7	150/170	230	71.1
2500	150	265	77	150/170	265	84.7
3150	150	290	98	150/170	290	108
4000	150	410	120	150/170	410	131.8
5000	150	480	145	150/170	480	159.4

Conductive part name	Maximum allowable temperature rise (K)
Busbar to busbar connection	60
The connection between the plug-in box plug and the busbar	60

For a comparison between the rated current of the bus duct and the specifications of each phase busbar, see Table (4)

Current level(A)	100	250	400	630	800	1000	1250	1600	2000	2500	3150	4000	5000
Busbar specifications(mm)	3×30	4×40	6×40	6×50	6×60	6×80	6×100	6×140	8×140	8×175	8×200	2-8×140	2-8x175

Selection And Drawings

● The number of plug-in and pull-out times between the plug-in box and the busbar should be no less than 200 times.

● RTCCX series bus duct is a fully enclosed structure with a protection level up to IP54.

● The cross-sectional dimensions and weight per meter of the bus duct are shown in Figure (1) and Table (3).

Three-phase four-wire; Three-phase five-wire; RTCCX bus duct is equipped with high insulation and high mechanical strength insulating green panels as connection accessories. The connector connection method is shown in Figure (2);