隨著社會對于重大自然火災發生時，要保護消防電路設備能夠正常使用一段時間，以用來進行消防滅火，不能因為建筑物一發生火災，里面的消防電路設備就馬上不能使用了，導致火災給社會和人民帶來巨大損失，防火橋架就是在這個背景下誕生的。

With the occurrence of major natural fire, the society should protect the fire circuit equipment to be able to use normally for a period of time for fire fighting. The fire circuit equipment inside the building should not be used immediately because of a fire in the building, resulting in huge losses to the society and people. The fire Bridge was born under this background.

該橋架能夠在外界環境起火后，保護防火橋架內的電纜不會受到干擾影響，還能夠正常工作一段時間，以保證消防工作正常開展。跨接線用在兩節橋架之間用來保證電路的通暢，平常狀態下一般不會有電流通過。

The cable tray can protect the cables in the fire-proof cable tray from interference after a fire in the external environment, and can work normally for a period of time to ensure the normal development of fire protection work. The jumper wire is used between two bridges to ensure the smoothness of the circuit. Generally, no current will pass through under normal conditions.

如果橋架發生漏電，則電流會通過跨接線相連接的接地保護導體流入大地，從而保證橋架上面不會有積電，避免發生漏電事故保護人身安全。

If there is leakage in the bridge, the current will flow into the earth through the grounding protection conductor connected with the jumper wire, so as to ensure that there is no accumulated electricity on the bridge, avoid leakage accidents and protect personal safety.

要求金屬橋架線路建議有相關接地連接，以保護橋架不會有積電導致發生漏電事故，危及人身安全。2節橋架跨接處的電阻應小于等于50歐姆。

It is required that the metal bridge lines must have relevant grounding connections to protect the bridge from electric leakage accidents caused by accumulated electricity and endanger personal safety. The resistance at the jumper of section 2 bridge shall be less than or equal to 50 ohms.

每節橋架本身的電阻應小于等于5歐姆，要求非金屬橋架線路要單獨敷設專用接地線。總之要保護橋架線路的電流的通暢性，不讓橋架產生積電。電纜橋架生產廠家供貨時都要遵循以上電路保護標準。

The resistance of each cable tray shall be less than or equal to 5 ohms. It is required that the non-metallic cable tray lines shall be separately laid with special grounding wires. In a word, it is necessary to protect the current smoothness of the bridge line and prevent the bridge from generating accumulated electricity. The cable tray manufacturer shall follow the above circuit protection standards when supplying.

防火橋架按照制造材質可以分為金屬防火橋架和非金屬防火橋架，金屬防火橋架的常用材質為鍍鋅板或經過熱鍍鋅工藝處理后的冷熱軋板，兩節金屬防火橋架連接的時候，如果有連接板且連接板兩端都有2個固定螺栓，則這兩節金屬防火橋架之間可以不使用跨接線。

The fire-proof cable tray can be divided into metal fire-proof cable tray and non-metal fire-proof cable tray according to the manufacturing material. The common material of metal fire-proof cable tray is galvanized plate or hot-rolled plate after hot-dip galvanizing process. When two metal fire-proof cable trays are connected, if there is a connecting plate and two fixing bolts at both ends of the connecting plate, the jumper wire can not be used between the two metal fire-proof cable trays.

山東電纜橋架廠家提醒您，如果沒有連接板，則建議用跨接線。非金屬防火橋架使用的材質一般為高分子或合成樹脂材料，按照標準一般不是用跨接線來保護電路安全，而是直接使用專用接地導電扁鐵。

Shandong cable tray manufacturer reminds you that if there is no connecting plate, jumper wire must be used. The material used for non-metallic fire-proof bridge is generally high polymer or synthetic resin material. According to the standard, the special grounding conductive flat iron is directly used instead of jumper wire to protect the circuit safety.

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