![](/images/new-backgrounds/1049886/4988657x1.webp)
Vacuum interrupter/ operator
Figure 22: Typical elementary diagram
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| T | |
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| C |
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| SD16 | SD13 |
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| W | 21 | LS21 |
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| G | R |
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| 22 | 41 |
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| 52b |
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| 42 |
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| SD3 |
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| 22 | 21 | 14 | SD4 | SD1 |
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| 88 |
| 52Y | LS3 | 52Y |
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| 13 |
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| 21 | 22 | 13 | 31 | 24 |
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| LS41 |
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| 31 |
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| 52b | 52a |
DC supply | 14 | 21 |
| 32 | 52Y |
| 32 | 23 |
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| LS22 |
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| 22 | A1 |
| A1 |
| A1 | |
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| 52SRC |
| 52Y | 52T | |
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| 22 | 22 | A2 |
| A2 | SD14 | A2 |
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| 34 | ||
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| MI1 MI2 | 13 |
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| 21 |
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| 52a | ||
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| LS9 |
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| 33 | |
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| TB |
| 14 |
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| SD2 | ||
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| 5 |
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| SD15 | 6 |
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SD11 |
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| SD9 |
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| SD7 |
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| SD5 |
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54 | 64 | 52a | 91 | 101 |
| 74 | 84 |
| 111 | 121 |
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| 52a |
| 52b | 52b |
| 52a | 52a |
| 52b | 52b | |
55 | 63 |
| 92 | 102 |
| 73 | 83 |
| 112 | 122 |
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SD12 |
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| SD10 |
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| SD8 |
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| SD6 |
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88.0-
52a - Auxiliary switch is open when circuit breaker is open
52b - Auxiliary switch is closed when circuit breaker is closed
52SRC -
52T - Shunt trip coil
52Y - Closing relay
G- Green indicating light (trip)
LS | - |
MI1, MI2 - Mechanical interlock
OI/C | - Control switch (close) |
OI/T | - Control switch (trip) |
R- Red indicating light (closed)
W- White indicating light (spring- charged).
Standard:
Fuses in close circuit. Slugs in trip circuit (fuses optional).
Shown with springs DISCHARGED,
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