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Adjustment of Auxiliary Switches

Auxiliary switches are always actua-

ted directly by the switch shaft via an

intermediate linkage. Their position

always corresponds to that of the

main contacts.

Please take current adjustment of

auxiliary switches from the latest

revision of switchboard's LV sche -

matics.

Adjustable cams are enabling inivi-

dually setting of switching perfor-

mance. Setting should only be car-

ried out by a specialist who is used

to the installed auxiliary switches.

Auxiliary switches may not be disas-

sembled.

Fig. 2.2

Setting the cams of the auxiliary switch

Cam

Viewing direction

for adjustment

Rated supply voltage DC

Switching capacity

Time constant T=L/R

Rated short-time current

[V]

[A]

[ms] ≤ 20

100 A for a duration of 30 ms

110

220

Rated continuous current [A] 10

120

230

–

Auxiliary switch

Areva WSB User Manual

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