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1·The normally closed contact of the Model 7169A serves to discharge the capacitor after it has been measured.

在测量完成以后，7169A型的常闭接点使电容器放电。

2·When measuring the leakage current with this setup, the voltage bias is applied to all the diodes simultaneously through the normally closed contact of each relay.

当利用这一配置测量漏流时，通过每个继电器的常闭触点同时向所有的二极管施加偏压。

3·FS remote contact module with remote contact base, can be selected according to the actual needs of the terminal 1-2 (normally open) or 1-3 (normally closed contact).

触点模块附带遥信触点功能底座，可根据实际需要选用端子1-2（常开触点）或1-3（常闭触点）连接。

4·The movable safety piece is connected with the insulating system, is supported against by the control rod, and is in normally closed connection with the fixed contact piece.

该动保险片，它连接绝缘系统，而且，它受控制杆顶抵并常闭连 接该定接触片。

5·The contact point is in a normally open state, namely, while the disc is closed, the contact point of the electric control device is closed, and in a power-on state, it sends out electric signals.

触点处于常开状态，即阀瓣关闭时，电控装置触点闭合，在通电状态下给出电信号。