ccc Note: 1)Ripple & Noise test: Ripple & Noise bandwidth is set to 20MHz.
纹波和噪声测试:纹波和噪音带宽设置在20兆赫兹。
2)Use a 0.1uF ceramic capacitor in parallel with a 10uF electrolytic capacitor at output connector terminals for ripple & noise measurements.
输出端并联一个0.1uF的陶瓷电容和一个10uF的电解电容来测试纹波和噪声。
1.2.3 Output Transient Response. (输出动态响应)
Table 4. Test condition.测试条件
Voltage Tolerance Limit |
Slew Rate |
Load Change |
+38V/10% |
0.25A/uS |
Min. to 50% load and 50% to Max load |
Note: Load change repetition rate: 50Hz to 100Hz . 跳变负载频率:50~100Hz.
1.2.4 DC Output Overshoot During Turn-On & Turn-Off(输出超调)
Table 5
Output Channel |
Output(V) |
Overshoot voltage(V)超调电压 |
|
Turn-on开机 |
Turn-off关机 |
||
+38V |
+38V |
≤10% |
≤10% |
Note: All of dc output current from Min. to Max. 测试时负载范围:最小到最大。
1.2.5 DC output voltage rise time(输出上升时间)
Table 6
Output Voltage |
175Vac input &Full Load |
220Vac input &Full Load |
+38V |
≤30 mS |
≤30mS |
Note: The rise time measured is when the output voltages rise from10% to 90% of specified output voltage Vout observed on the channel waveform.
上升时间为输出电压从10%上升到90%的时间。
1.3 Protection(保护功能)
1.3.1 DC Output Over current Protection(输出过流保护)
Table 7
Output Voltage |
Over Current |
Comments |
+38V |
〉6.5 Atyp* |
Hiccup 锁机 |
Note:The over current protection should be tested at other load rating.
过流保护测试是在其它额定负载时测试。
1.3.2 DC Output Over Voltage Protection(输出过压保护)
Output Voltage |
Over Voltage |
Comments |
38V |
40.0 Vtyp* |
Shutdown锁机 |
Note:
1.The over Voltage protection should be tested at other load rating.
过压保护测试是在其它额定负载时测试。
2.When the output voltage is over 40V the product is protected. When the fault is excluded or is start working again the power supply is working normally.
当输出电压超过40V时,产品进入保护状态,当故障排除或重新起机时,电源工作正常。
1.3.3 DC Output Short Circuit Protection(输出短路保护)
Table 8
Note: The Short Circuit protection should be tested at other load rating.
短路保护测试是在其它额定负载时测试。
2. Isolation(绝缘性能)
2.1 Isolation Resistance(绝缘阻抗)
Table 9
Output Voltage |
Comments |
+38V |
Hiccup锁机 |
2.2 Hi-Pot(绝缘耐压)
Table 10
Input To Output |
DC500V 8MΩmin (at room temperature) |
Note: Open FG and Output return. 交流地和输出负极要断开。