DSH 166A/200A/201A（GENERALITY）交叉开槽螺钉/电镀层/直流试验电路电压降及纹波

DSH 166A

Subject: Acceptance of cross-slotted screws

Question:

Are cross-slotted screws generally accepted in electrical equipment ?

Decision:

Yes, without any restriction, as the tool used for this type of screws cannot be considered as a special tool.

问题：

能接受在电子设备中使用交叉开槽螺钉吗？

决定：

可以，没有限制。适配这些螺钉的工具不能认为是特殊工具。

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DSH 200A

Subject: Steel as a current carrying part

Question:

Use of steel as a current carrying part when provided with an electroplated coating of zinc, whose thickness is dependent on degree of protection IP of the enclosure：If the enclosure withstands the relevant tests with respect to harmful ingress of water, is the inside of the enclosure considered as dry environment or are the environment condition inside and the outside the enclosure with respect to corrosion the same?

Decision:

The same requirement shall be applied inside as well outside the enclosure of the appliance.

问题：

使用钢作为载流部件并镀锌，镀层厚度取决于设备外壳IP防护等级：假设外壳通过了禁止水侵入的相关试验，设备外壳内部可以认为是干燥环境吗？还是要求外壳内外部都必须防腐蚀？

决定：

外壳内部防腐蚀要求与外部一致。

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DSH 201A

Subject: Characteristics of D.C. electric circuits for verifying normal operation and making and breaking capacity

To reach an acceptable test reproducibility, when verifying normal operation and making and breaking capacity, it is recommended that the test circuit has the following characteristics:

- Voltage drop:

The maximum voltage drop which should not be exceeded, when passing from noload to load condition, is 5% of the rated voltage.

- Voltage ripple value:

Voltage ripple valueThe supply voltage ripple, at no-load condition, should not exceed 5%.

为了保证试验良好的复现性，验证正常运行以及合断能力时，建议直流试验电源具备以下特性：

电压降：

从空载变化到满载时，输出电压降不超过额定电压的5%

电压纹波：

空载时，输出电压纹波不超过5%。

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