Eaton Power Xpert PXR 10, Руководство пользователя

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PXR Electronic trip unit 01/21 MN012005EN www.eaton.com
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Table of contents
0 About this manual ..................................................................... 5
0.1 List of revisions ............................................................................ 5
0.2 Target group................................................................................. 5
0.3 Abbreviations and symbols .......................................................... 6
0.3.1 Safety warning concerning property damage .............................. 7
0.3.2 Safety warning concerning personal injury hazards ..................... 7
0.3.3 Tips............................................................................................... 7
0.4 Additional documents .................................................................. 8
1 Function ...................................................................................... 9
1.1 General information...................................................................... 9
1.2 Technical background................................................................... 9
1.3 Standards, guidelines, approvals.................................................. 10
2 Design ......................................................................................... 11
2.1 Operator interface ........................................................................ 12
2.1.1 Rotary switch on the PXR10 and PXR20 trip units....................... 12
2.1.2 LCD display on the PXR25 trip units ............................................ 13
2.2 Micro-USB connection ................................................................. 15
2.3 LED Status indication ................................................................... 16
2.4 Trip reason indicator..................................................................... 17
2.5 Overload indicator ........................................................................ 18
2.6 Tamper-proof cover...................................................................... 18
3 Protection and measurement functions .................................. 19
3.1 Trip unit functions ........................................................................ 19
3.2 Protection functions ..................................................................... 19
3.3 Measuring functions .................................................................... 21
3.4 Power and energy measurements............................................... 22
3.5 Time/current characteristics......................................................... 23
3.6 Voltage tap of the neutral conductor on the PXR25..................... 23