Siemens 7 SK 88 A Series Installation And Maintenance Instructions Manual page 13

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4AM5070-8AB
Ka _La i
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Kb _lb
Ke _Le .
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3 51-1 50-1 4
3 51-2 50-2 ·4
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3 51-3 50-3 4
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52
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5
r---j---4t
relay trip
50-1 !jS1-1 contQct~-
2 connect
In
parcfel.
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Legend
51-1 o/e- relay 7SK88
51- 2
ole -
relay 7 SK 88 optional
51- 3 ole - relay 7 SK88
52
Circuit breaker
50-1 high set element,-optional
50 - 2 high set element, optional
50 - 3 high set element, optional
*
Zenerdiode
Fig. 8: External Schematic of 1SK88 relay -
C.T. powered version with tripping from C.T. supply
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