FOXBORO FBM242 P0916NG开关外部输出模块
RS232端口仅适用于显示器版本。更多详情请参见第12页第1.2.5节：订单代码。2.2.11介电强度测试可能需要在安装PQM的情况下测试整个开关设备的介电强度。这也被称为“flash”或“hipot”测试。PQM的额定值为继电器触点、CT输入、VT输入、控制电源输入和安全接地端子6之间的1500 V AC隔离。有必要采取一些预防措施，以防止在这些测试过程中损坏PQM。在控制电源、串行端口、开关输入、模拟输出、模拟输入和滤波器接地端子5之间使用滤波器网络和瞬态保护钳，以滤除高压瞬态、射频干扰（RFI）和电磁干扰（EMI）。在介电强度测试期间施加的相对于地的连续高电压可能会损坏滤波电容器和瞬态吸收器。
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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