Basler BE1-DFPR, Instruction Manual

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BE1-DFPR General Information
1-2
Built-in breaker trip circuit monitor.
FEATURES
Each DFPR relay function has many different features. These features are also listed in the following
paragraphs and elaborate on the expanded functions.
Protection Features
Programmable integrating reset characteristics available for 51 functions.
Current and voltage sensing elements attenuate offsets and harmonics.
Different time overcurrent curves may be selected for phase and neutral.
Instantaneous overcurrent elements are provided for phase and neutral.
Fixed time overcurrent elements are provided for phase and neutral.
Tripping elements and the response of the reclosing section may be set for normal, AUX 1 (cold
load), AUX 2 (emergency), AUX 3 and AUX 4 settings by control inputs.
In addition to the main tripping outputs, an independent trip output may be programmed to operate
on any of the protective functions.
Control inputs are provided to block all fixed time overcurrent elements and/or the neutral fixed
time and neutral time overcurrent elements.
The breaker failure element may be initiated by any protective tripping function or a supervisory
trip.
A breaker fail alarm contact is provided to indicate breaker problems that occur before the breaker
fail function is actually caused to operate.
Zone sequence coordination provided.
Control Features
The reclosing function includes two programmable close outputs, inputs for initiate, drive-to-
lockout, and enabling or disabling reclosing.
The reclosing section of the relay is deactivated to prevent pumping when the breaker is tripped
or closed through one of the control inputs.
An output is provided to block the load tap changer on the substation transformer or voltage
regulator during a fault clearing or restoration process.
Overcurrent protective functions may be adapted through BT1 and BT2 control inputs.
Programmable inputs available for control features.
Data Processing Features
Data is formatted to display information in logical groups on computer or terminal.
Demand values are calculated for phase currents, watts, var, and voltamperes for intervals from
one to sixty minutes.
Energy accumulation in watt hours, var hours, and the number of hours since last reset are
calculated and stored.
Data stored on breaker duty includes number of operations and the sum of the I
2
or I values
interrupted.
Fault/event data is stored for up to 40 breaker operations.
Parameters being measured and/or stored may be displayed on the front panel.
Status outputs are provided for targets and reclose functions.
Battery backed-up clock provides date and time for reports.
Programmable alarm outputs available for alarm functions.
Communications Features
Front RS-232 port for observing menus and groups of data or set-up parameters via a portable