復(fù)合型防腐屏蔽電纜橋架的應(yīng)用
1. For the vibration site, the spring shall be installed at the joint of the grounding part
2、橋架系統(tǒng)應(yīng)具有可靠的電氣連接并接地(只對(duì)金屬橋架).
2 the bridge system shall have reliable electrical connections and earthing (only for metal bridge)
3、沿橋架全長另敷設(shè)接地干線時(shí),每段(包括非直線段)橋架應(yīng)少有一點(diǎn)與接地干線可靠連接.
3, along the length of the bridge to lay the ground line, each paragraph (including non linear section) bridge should be at least a little reliable connection with the grounding trunk
4、當(dāng)允許利用橋架系統(tǒng)構(gòu)成接地干線回路時(shí)應(yīng)符合下列要求.橋架端部之間連接電阻應(yīng)不大于0.00033歐姆,接地孔應(yīng)絕緣涂層.在1KV及以下中性點(diǎn)直接接地系統(tǒng)中,受電設(shè)備的接地與系統(tǒng)中性線接地相連.裝有處動(dòng)切斷供電裝軒時(shí),橋架的級(jí)長方向金屬橫截面積應(yīng)不小于規(guī)定值.
4, when allowed using the bridge system composed of grounding line circuits should meet the following requirements. The bridge between end connection resistance should be less than 0.00033 ohm, grounding hole should remove the insulation coating at 1KV and below the neutral grounded system, electrical equipment grounding system with neutral grounding connected. A dynamic assembly when the power supply is cut off, the prefect direction of metal cross section bridge should be not less than the specified value.
5、在公共通道或戶外跨越道路段,底層梯級(jí)的底部宜加墊板。
5, in public or outdoor crossing the road section, the bottom of the bottom of the ladder should be added padding.
6、需屏蔽電器干擾的電纜網(wǎng)路或有防護(hù)外部(如:有腐蝕液休,易燃粉塵等環(huán)境)影響的要求時(shí),應(yīng)選用(FB)類槽式復(fù)合型防腐屏蔽電纜橋架(帶蓋)
6, the need to shield electrical interference cable network, or to protect external (such as: corrosion liquid, flammable dust and other circumstances) influence, should choose (FB) trough type composite anti-corrosion shield cable bridge (with cover)
7、強(qiáng)腐蝕性環(huán)境應(yīng)采用(F)類復(fù)合環(huán)氧樹脂防腐阻燃型電纜橋架.托臂、支架也要選用同樣材料,提高橋架及附件的使用壽命,電纜橋架.在容易積灰
7, strong corrosive environment should be used (F) composite anti-corrosion epoxy resin flame retardant type cable tray bracket, bracket. To use the same material, improve the service life of the bridge and annex, cable tray in the dirt.
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