FOXBORO FBM242 P0916NG開關(guān)外部輸出模塊
RS232端口僅適用于顯示器版本。更多詳情請參見第12頁第1.2.5節(jié)：訂單代碼。2.2.11介電強(qiáng)度測試可能需要在安裝PQM的情況下測試整個(gè)開關(guān)設(shè)備的介電強(qiáng)度。這也被稱為“flash”或“hipot”測試。PQM的額定值為繼電器觸點(diǎn)、CT輸入、VT輸入、控制電源輸入和安全接地端子6之間的1500 V AC隔離。有必要采取一些預(yù)防措施，以防止在這些測試過程中損壞PQM。在控制電源、串行端口、開關(guān)輸入、模擬輸出、模擬輸入和濾波器接地端子5之間使用濾波器網(wǎng)絡(luò)和瞬態(tài)保護(hù)鉗，以濾除高壓瞬態(tài)、射頻干擾（RFI）和電磁干擾（EMI）。在介電強(qiáng)度測試期間施加的相對于地的連續(xù)高電壓可能會(huì)損壞濾波電容器和瞬態(tài)吸收器。
The RS232 port is only available with the display version. See Section 1.2.5: Order Codes on page –12 for further details. 2.2.11 Dielectric Strength Testing It may be required to test the complete switchgear for dielectric strength with the PQM installed. This is also known as “flash” or “hipot” testing. The PQM is rated for 1500 V AC isolation between relay contacts, CT inputs, VT inputs, control power inputs and Safety Ground Terminal 6. Some precautions are necessary to prevent damage to the PQM during these tests. Filter networks and transient protection clamps are used between the control power, serial port, switch inputs, analog outputs, analog input, and the filter ground terminal 5 to filter out high voltage transients, radio frequency interference (RFI) and electromagnetic interference (EMI). The filter capacitors and transient absorbers could be damaged by the continuous high voltages relative to ground that are applied during dielectric strength testing.
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