ERL F-PRO 5100, User Manual

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5 Offliner Settings Software
5-12 F-PRO 5100 User Manual D02416R04.00
CT Turns Ratio and PT Turns Ratio
The CT and PT ratios are specified for the analog inputs. All CT and PT ratios
are specified with a ratio relative to one (i.e. X amps to 1A). The line protection
uses the main current and the main voltage to operate. When two sets of CTs
(main and auxiliary) are used as line current input (e.g. ring bus application),
you must enable the ring bus configuration parameter to inform the relay. If en-
abled, the currents from the two sets of CTs are added to the relay to form the
line current. F-PRO uses ac volts from the main PTs for its protections and for
the metering functions. A single phase voltage from the bus is connected to
sync ac volts to provide voltage for sync checking capability.
Record Length
Figure 5.12: Record Length
Record Length
Fault Record Length 0.2 to 2.0 seconds
Trend Auto Save Enable/disable
Event Auto Save Enable/disable
The relay has recording and logging functions to analyze faults and to review
the operation of the overall protection scheme.
This item identifies the amount of time that each fault record. Prefault is fixed
at 10 cycles.