电源的安规要求点.pptVIP

Touch Current 接触电流测试 The equipment was connected to 1.06 time Voltage,?50(or 60Hz). The equipment was placed on an insulating surface and all connections to external equipment were disconnected to prevent stray leakage paths. The unit protective earthing connection was disconnected during the test. 设备连接到的电源电压是设备额定电压范围的上限1.06倍，频率使用50或60赫兹。 设备放在绝缘的表面上并断开与外部其它设备的连接。带有保护接地连接的要在测试时断开。 Measuring instrument used: Simpson Meter 228 Touch Current 接触电流测试 Touch Current 接触电流测试 Equipment with touch current exceeding 3,5 mA For STATIONARY PERMANENTLY CONNECTED EQUIPMENT or STATIONARY PLUGGABLE EQUIPMENT TYPE B having a main protective earthing terminal, if the TOUCH CURRENT measurements exceed 3,5 mA r.m.s., all of the following conditions apply: 接触电流超过3.5mA的设备。 对带有电流源保护接地端子的驻立式永久连接的设备或驻立式B 型可插式设备，当测量的接触电流超过3.5mA 时，如下的所有条件均适用： Touch Current 接触电流测试 – the r.m.s. PROTECTIVE CONDUCTOR CURRENT shall not exceed 5 % of the input current per line under normal operating conditions. If the load is unbalanced, the largest of the three line currents shall be used for this calculation. To measure the PROTECTIVE CONDUCTOR CURRENT, the procedure for measuring TOUCH CURRENT is used but the measuring instrument is replaced by an ammeter of negligible impedance; 保护导体电流的有效值在正常工作条件下不应超过每相输入电流的5%.如果负载不平衡，则应采用三个相电流中的最大值来计算.测量保护导体电流可使用测量接触电流的程序，但测量仪器可使用忽略阻抗影响的安培表来代替； Touch Current 接触电流测试 – the cross-sectional area of the PROTECTIVE BONDING CONDUCTOR shall be not be less than that of the conductors in table 3B (see 3.2.5), with a minimum of 1,0 mm2 in the path of high PROTECTIVE CONDUCTOR CURRENT; 保护连接导体的截面积不应小于表3B 中规定的导体的截面积（见3.2.5），在大保护导体电流通路上，截面积至少为1.0 mm2 。 Touch Current 接触电流测试 7. Misuse the symbol of protect bonding terminal as protective earthing terminal 保护连接端子符号和保护接地端子符号混淆. 1.7.7.1 A wiring terminal intended for connection of a PROTECTIVE EARTHING CONDUCTOR shall be indicated by the symbol (60417-1-IEC-5019). This symbol shall not be used for other earthi