Section 75
00-02-0878
2013-03-07
- 108 -
The table shows the actual measurements at a 10% under voltage situation in a
400/230 volt system.
Phase-Neutral
Phase-Phase
Nominal Voltage
400/230
400/230
Voltage, 10% Error
380/
207
360
/185
The alarm will occur at two different voltage levels, even though the alarm setpoint is
10% in both cases.
Example
The below 400V AC system shows that the phase-neutral voltage must change 20%,
when the phase-phase voltage changes 40 volts (10%).
NOTE
: Phase-neutral or phase-phase: both the generator
protections and the busbar/mains protections use the selected
voltage.
Summary of Contents for EMS-GC10
Page 1: ...00 02 0878 Section 75 2013 03 07 GensetControllerUnit ModelEMS GC10 Operator sManual ...
Page 14: ...Section 75 00 02 0878 2013 03 07 8 Menu Structure Diagram ...
Page 33: ...Section 75 00 02 0878 2013 03 07 27 MB Open Sequence ...
Page 34: ...Section 75 00 02 0878 2013 03 07 28 GB Open Sequence ...
Page 35: ...Section 75 00 02 0878 2013 03 07 29 Stop Sequence ...
Page 36: ...Section 75 00 02 0878 2013 03 07 30 Start Sequence ...
Page 37: ...Section 75 00 02 0878 2013 03 07 31 MB Close Sequence ...
Page 38: ...Section 75 00 02 0878 2013 03 07 32 GB Close Sequence ...
Page 39: ...Section 75 00 02 0878 2013 03 07 33 Load Takeover LTO ...
Page 40: ...Section 75 00 02 0878 2013 03 07 34 Island Operation ...
Page 41: ...Section 75 00 02 0878 2013 03 07 35 Automatic Mains Failure AMF ...
Page 42: ...Section 75 00 02 0878 2013 03 07 36 Test Sequence ...
Page 48: ...Section 75 00 02 0878 2013 03 07 42 Stop Sequence The drawings illustrate the stop sequence ...
Page 74: ...Section 75 00 02 0878 2013 03 07 68 Start ...