ABB SF6 LTB 245E1 BLG 1002A - Closing Operation; Figure 1-4. Closing Operation

Description Product Description
4
1HSB515432-100 en rev2
1.3 Closing operation
On closing of the circuit-breaker, the latch is released in the closing catch gear (2).
The chain section (17) is released and transfers the closing spring’s (7) energy to the
cam disc (5). The cam disc rotates 360° clockwise and pulls the operating lever (4)
to the right until the opening catch gear (1) engages. The movement is damped in
the end position by the closing dashpot (12). The opening spring (14) is charged via
the pull-rod (13).
The chain section (18) travels up the same path as the chain section (17) travels
down.
Figure 1-4. Closing operation.
Item
1 Opening catch gear
2 Closing catch gear
4 Operating lever
5 Cam disc
7 Closing springs
12 Closing dashpot
13 Pull-rod
14 Opening spring
17 Chain section
18 Chain section
12
18
5
14
13
2
7
17
4
1
B20031