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UNIT 9
SHORT–CIRCUIT SWITCHING
(MAKING/BREAKING) CAPACITY
1 Learn the meaning of the following words, word-
combinations and word groups:
Switching capacity, short-circuit making capacity, short-circuit
breaking capacity, installation, suitable backup protection, device
manufacturer, overload trip characteristic, increase, temperature
rise, due to, erosion, contact material, rated breaking capacity,
prospective short-circuit current.
2 Read and translate Text 1:
Text 1
Short-Circuit Switching (Making / Breaking) Capacity
Figure 9.1 - Short-circuit switching (making/breaking)
capacity
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