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20
SECTION 13—Opening and Closing Speed
The opening speed is modified by moving the spring adjusting
nuts on the opening spring assemblies. A change in opening
speed affects the closing speed. Reference Figure 12.
The operating speeds for a 5 cycle breaker are as follows:
Operation
Operation
Operation
Operation
Feet Per Second
Feet Per Second
Feet Per Second
Feet Per Second
Open
4.3 - 5.6
Close
2.6 – 3.9
V.I. STOP CENTER PHASE
Figure 12 Contact gap adjustment
Содержание PowerVac
Страница 1: ...DEH 40368 Instructions g PowerVac Vacuum Circuit Breaker with ML 20 Mechanism ...
Страница 13: ...13 Figure 10 Control switches LCS Switch ...
Страница 26: ...26 Figure 14 Continued C Breaker closed spring discharged D Breaker closed spring charged ...
Страница 28: ...28 Figure 15 Continued Partial View A Partial View B Partial View C Partial View D Partial View D ...
Страница 29: ...29 Figure 16 Typical wiring diagram for ML 20 mechanism ...
Страница 31: ...31 Figure 19 Trip coil and linkage 1 Trip coil 2 Closing spring 3 Trip linkage adjusting rod and nut 3 1 2 ...
Страница 39: ...Intentionally Left Blank ...