4 Protection Functions and Specifications
4-20
F-PRO 5100 User Manual
D02416R04.00
• C Phase Feeder Current IC (A Pri)
The peak demand quantities are available from the front panel display, the TUI
metering and SCADA. Peak Demand quantities can be reset from the front
panel, TUI or SCADA. The peak value of the above quantities and the time of
occurrence are displayed.
Accumulated Energy (kWh, kVARh metering)
For the accuracy and the consistency, the method of the energy calculation is
the same regardless of the demand type. (rolling, integration, thermal). There
are four accumulated energy quantities. They are:
• 3 Phase real energy OUT (MWh)
• 3 Phase real energy IN (MWh)
• 3 Phase reactive energy OUT (MVARh)
• 3 Phase reactive energy IN (MVARh)
The accumulated energy quantities are calculated by the integration of the av-
erage power over the elapsed time. This calculation is carried out once per min-
ute, however the actual power is sampled every half second and averaged every
minute (120 samples).
The accumulated energy quantities are stored in the non-volatile memory to
avoid the data loss on power down.
When the accumulated energy quantities exceed 98000 MWh/MVARh they
are reset to zero. A reset on one energy quantity will only reset it's own value,
not the other energy quantities. All reset actions will be logged in the event log.
Summary of Contents for F-PRO 5100
Page 1: ...F PRO Feeder Protection Relay Model 5100 User Manual Version 4 0 Rev 0...
Page 2: ......
Page 4: ......
Page 8: ......
Page 10: ......
Page 28: ......
Page 94: ......
Page 98: ......
Page 140: ......
Page 146: ......
Page 168: ......
Page 172: ......
Page 174: ......
Page 176: ......
Page 178: ......
Page 190: ......