In the selection, generally take into account the following factors: fire requirements, insulation should be flame retardant, heat resistance, will not release toxic gases at high temperatures, in the structure to prevent the chimney effect, should be given priority to the selection of dense insulated busway, such as the selection of air-insulated type, it should be set up in the line trough shell of each unit of the fire-stopping isolation; for the particularly important places, should be selected fire-resistant type trough to ensure that the emergency power supply fire to maintain the work of the work. For particularly important places, fire-resistant tanks should be used to ensure the maintenance of emergency power supply under fire.

In terms of the installation site, the first consideration of the slot shell protection level, followed by the building structure on the shape of the trunking, mounting bracket form and span: indoor specialised workplaces, such as large-capacity substations, to ensure safety, should be selected IP30 level of busway; indoor work in general, such as the floor of the electrical shafts and distribution room, to ensure safety, should be selected not less than IP40 level of busway; indoor humid places, or have splash-proof requirements, should be selected. Or splash-proof requirements, should be from the technical performance, thermal effect, price and other aspects of the overall consideration, the current market more choice of high thermal performance, low energy consumption of aluminium alloy shell, low impedance dense insulated busway.

How to accept the busbar?

First look at the random documents of the busway: at least: a copy of the ccc certificate, a copy of the inspection report, the busway selected busbar quality assurance certificate. If required, installation instructions for the busbar should be provided. Of course, you also need to check the nameplate, certificate and other information.

Second, the physical quality acceptance: according to the contract or busway inspection report requirements, inspection busway using busbar size, should be in line with the corresponding current level of the size of the stated size, size tolerance strictly according to GB/T5585 tolerance acceptance. Busway supply form is in line with the contract requirements. The basic test of busway: insulation resistance test, voltage resistance test, protection line continuity test, protection level test, with plug-in box should also be tested for mechanical operation. Through the test should be carried out after the power test.

• Prev
• Next