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ABB RELION REX640 - 11.3.2.2 User-programmable inverse-time characteristics for undervoltage protection

ABB RELION REX640
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Figure 1018: Inverse curve B characteristic of undervoltage protection
11.3.2.2 User-programmable inverse-time characteristics for undervoltage
protection
The user can define curves by entering parameters into the standard formula:
1MRS759142 F
General function block features
REX640
Technical Manual
1905

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