6、连接器绝缘护套Bushings for Box Connectors(BPA)
  | 结构 具有钢管内螺纹的塑料件，安装在BG、WBG等外螺纹端部。BPB顶端配有封闭防尘片，待穿线时凿开即可。 用途 为了保护电线、电缆绝缘层不受损伤。防止配管施工时灰尘和沙土进入可挠金属电线保护套管管道，造成穿线困难，安装在末端的封套。 |
Structure
Thread pieces of plastic pipe is installed in BG, WBG threaded outer ends. BPB closed dust equipped with the top film, when drilling can be threading.
Uses
In order to protect the wiring, cable insulation layer from damage. Piping prevent construction dust and sａnd into Prica pipelines, which have caused difficulties threading installed at the bottom of the envelope.
(6)连接器绝缘护套规格表 Size of ( BPA)
| 型号 Catalogue | 可挠金属套管规格 PRICA Connection Size | L mm | φd mm | A mm | 管螺纹 Conduit Screws |
| BPA-12 | 12# | 9 | 14 | 28．6 | G1／2＂ |
| BPA—15 | 15# | 9 | 14 | 28．6 | G1／2＂ |
| BPA-17 | 17# | 9 | 14 | 28．6 | G1／2＂ |
| BPA-24 | 24# | 9 | 19．2 | 35．5 | G3／4＂ |
| BPA-30 | 30# | 13 | 25．4 | 41．5 | G1＂ |
| BPA-38 | 38# | 13 | 33．9 | 51．8 | G11／4＂ |
| BPA-50 | 50# | 14 | 39．6 | 58．9 | G11／2＂ |
| BPA—63 | 63# | 14 | 49.7 | 71．0 | G2＂ |
| BPA—76 | 76# | 14 | 65 | 87．4 | G21／2＂ |
| BPA—83 | 83# | 14 | 77．5 | 100 | G3＂ |
| BPA-101 | 101# | 14 | 100 | 128 | G4＂ |
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