時間:2011-06-14 21:26來源:藍天飛行翻譯 作者:航空 點擊:次
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(5) Application of 28 volt dc to close, allows momentary energizing of the coil . when the breaker closes, the coil deenergizes through the auxiliary contact and the breaker is held closed by the permanent magnet. Application of 28 volt dc to trip. Reverses the polarity of the coil and the contactor opens assisted by the spring. The coil deenergizes through the auxiliary contact. 28伏直流電關(guān)閉的應(yīng)用,允許線圈瞬時接通。當(dāng)跳開關(guān)閉合時,線圈通過輔助觸點斷電,跳開關(guān)通過永久磁鐵被保持在閉合位。 28伏直流電松開的應(yīng)用,將線圈極性反向,觸點在彈簧的幫助下打開。線圈通過輔助觸點斷電。 (6) The 115 volt ac, 400HZ, 3-pahse power from an external source (ground power unit ) can also be supplied to the airplane for systems use. The external ac power system consists of an external power receptacle, bus protection panel, two external power contactors, relays, switches and indicating lights. The ac external power receptacle is located on the right side of the airplane, forward of the nose wheel well, the bus protection panel (BPP) is used for control and protection of the airplane circuits connected to external power. The two external power contactors connect 115 volt ac, 400Hertz, 3-phase power to the distribution system from external power source. 從外部電源的(地面電源) 400HZ,115伏三相交流電也能夠提供到飛機上供系統(tǒng)使用。外部交流電源系統(tǒng)包括一個外部電源插座,匯流條防換板,兩個外部電源接觸器、繼電器、開關(guān)及指示燈。外部交流電源插座位于飛機右側(cè)、前輪艙前方。匯流條防護板用來保護與外部電源連接的飛機線路。兩個接觸器將外部來的 115伏, 400HZ的三相交流電源接到分配系統(tǒng)。 (7) The 115 volt ac system is supplied by two engine driven generators, APU driven generator or external power. The powr is connected to the generator main busses by engine generator breakers. APU breakers and external
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