Requirement for reliable isolation degree of pollution 2 for boards and power section.

可靠绝缘的要求板与电源部分污染等级为2。

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It is necessary to close the isolation function to prevent the isolated space and the outside air directly convection, to reduce the partition, protected space by external pollution.

必要的密闭隔离功能，防止被隔离空间和外界空气直接对流，以减少被隔断、受保护的空间受到外界的污染。

youdao

It is necessary to close the isolation function to prevent the isolated space and the outside air directly convection, to reduce the partition, protected space by external pollution.

必要的密闭隔离功能，防止被隔离空间和外界空气直接对流，以减少被隔断、受保护的空间受到外界的污染。

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