電潛泵電纜英ppt課件(編輯修改稿)
2025-05-29 07:43 本頁面
【文章內(nèi)容簡(jiǎn)介】 at up to 550176。 F (288176。 C) in geothermal wells 19 Initials ? Susceptible to mechanical damage at elevated temperatures EPDM DISADVANTAGES ? Limited well fluid resistance, oil swells EPDM pounds 20 Initials ? 3 kV: tested at 20 kV DC, 7 kV AC ? 4 kV: tested at 30 kV DC, 10 kV AC ? 5 kV: tested at 35 kV DC, 13 kV AC Voltage Rating and Selection Criteria ? OPERATING VOLTAGE ? VOLTAGE SPIKES/TRANSIENTS ? MECHANICAL DAMAGE 21 Initials ? Surface Voltage is higher than motor Voltage (Voltage drop) ? Energy is required to push current through a cable ? Ohm39。s law。 V = I(R+XL) = IrL/A+IXL Voltage Drop x, 000 ftVsurfaceVmotor22 Initials C u r r e n t ( A ) 0 20 40 60 80 1 0 0 1 2 0 1 4 00102030405060Voltage Drop (V, per 1,000 ft) 1 / 0 A W G 1 A W G 2 A W G 4 A W G 6 A W GVoltage Drop Graph 23 Initials ? TEMPERATURE ? CHEMICAL ENVIRONMENT ? GAS ? HANDLING Barrier Selection Barrier24 Initials Barrier Types ? TEDLAR? TAPE 300176。 F (150176。 C) ? TEFLON? FEP EXTRUSION 350176。 F (175176。 C) ? PROPRIETARY HIGH TEMPERATURE TAPE 400176。 F (205176。 C) ? LEAD 550176。 F (288176。 C) POLYVINYLEDINE FLUORIDE EXTRUSION 300176。 F (150176。 C) 25 Initials – SUPERIOR HOOP STRENGTH – HIGHER TEMPERATURE TAPE vs. EXTRUDED BARRIER TAPE ADVANTAGE EXTRUDED BARRIER ADVANTAGES – FASTER TO PROCESS 26 Initials ? TEMPERATURE ? CHEMICAL ENVIRONMENT ? GAS ? HANDLING CONDITIONS Jacket Selection Jacket 27 Initials ? 185176。 F (85176。 C), HIGH DENSITY POLYETHYLENE (HDPE) ? 250176。 F (121176。 C), NITRILE 1 ? 275176。 F (135176。 C), NITRILE 2 ? 350176。 F (176176。 C), NITRILE 3 ? 350176。 F (176176。 C), EPDM Jacket Types
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