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Static Quiz - Winding Roll

The tension on the winding roll in Figure 1 is controlled by the nip roller. Static bar SB1 is installed to neutralize static from the nip roller. Fieldmeter reading ESPAN confirms that the electric field near the web after SB1 is zero. However, fieldmeter reading EROLL indicates that the winding roll has positive static.

Figure 1: Fieldmeter reading EROLL indicates that the winding roll has positive static.

 

Careful work has identified two choices in Figure 2 for controlling the electric field EROLL on the winding roll.

Choice A is to move static bar SB1.

Choice B is to install static bar SB2 to neutralize the winding roll.

 

Figure 2: Fieldmeter reading EROLL is zero after implementing either
A. (Move SB1) or B. (Install SB2). Which is better?

 

Which choice is better? Why?


 

 

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