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コントロールユニット Siemens 3AHのPDF 取扱説明書、インストール、操作、メンテナンスをオンラインで閲覧またはダウンロードできます。Siemens 3AH 33 ページ。 Vacuum circuit breaker operator module
Siemens 3AH にも：インストレーションオペレーション＆メンテナンス (20 ページ), 取扱説明書 (38 ページ)

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1. Maintenance and Troubleshooting

Overhaul

1.5 Free struts (28) from the upper pole support (20).

Loosen the strut hardware on the lower support

(40) and swing the struts forward and downward.

1.6 Loosen screws fastening the centering ring (28.1).

1.7 Remove bolt (31.2), lockwasher and large washer

at stationary contact of the vacuum interrupter.

Carefully note location of the conductive spacer

between interrupter and pole support. This spacer

has a concave surface which must be handled with

care to avoid damage.

1.8 Using a deep socket, loosen and remove hex

capscrew fastening the upper pole support to the

post insulator. Completely remove the upper pole

support and set aside.

1.9 Grasp the vacuum interrupter (30) and withdraw

vertically. Assistance may be required to work the

terminal clamp off the movable stem of the tube.

FORCIBLE TWISTING EFFORT IS NOT ALLOWED.

If the terminal clamp cannot be easily removed,

STOP!, check to be certain hardware is loose, and

that the clamp is not binding.

Figure 17. Vacuum Tube Replacement Illustration

2. Installing an Interrupter

NOTE: Replacement interrupter (30) will be received

from the factory with an eyebolt (36.3) in place, ad-

justed and torqued to specific requirements. DO NOT

ALTER THE ADAPTER SETTING.

2.1 Inspect all silver plated connection surfaces for

cleanliness. Clean only with a cloth and solvent.

Do not abraid.

2.2 Insert interrupter (30) in the lower pole support

(40) with the evacuation nipple (P) (if applicable)

facing the mechanism housing. Slip terminal

clamp (29.2) into position on the movable stem.

Figure 18.

Technique for Fastening Terminal Clamp Hardware

2.3 Install the conductive spacer between the fixed

(upper) terminal of the vacuum interrupter (30) and

the upper pole support (20), with the concave side

of the spacer facing the vacuum interrupter. Align

and fasten "finger tight" using heavy flat washer,

lock washer and nut, (31.2).

2.4 Fasten the upper pole support to the post insula-

tor using finger pressure only using hex head

(M16) bolt, lock washer and flat washer.