Transformer ratios – Basler Electric BE1-BPR User Manual
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BE1-BPR Functional Description
9272000990 Rev J
The RELAY SETUP menu screen shows the unique name of the protection logic scheme selected. Other
schemes may be selected pressing the EDIT +/- key with the cursor under the logic name. The relay will
scroll through the logic names stored in memory. The fault detector pickup and timer delay settings are
displayed on the RELAY SETUP sub-screens. To change the relay pickup or timer settings, use the same
techniques described in this section, under Changing Parameters.
Example of typical RELAY SETUP menu screens:
RELAY SETUP menu screen:
Sub-screen 1:
Sub-screen 2:
Sub-screen 3:
Sub-screen 4:
Sub-screen 5:
RELAY SETUP information can be reviewed or programmed through the communications ports as well.
•
The operational logic may be viewed or changed using the LOGIC command. A custom logic scheme
can be defined using the LN, LI, LF, LR, LT, and LO commands. The equations defining an existing
logic scheme may be reviewed using the LINFO command. All relay settings can be reviewed using
the SHOWSET command.
•
Pickup settings can be viewed or changed using the PU command. The PU command can also be
used to view or set the number of cycles used for the moving average filter if digital filter 2 operation
is selected when defining the fault detector logic (LF).
•
Time delay settings can be viewed or changed using the TD command.
•
Recloser timer delay settings can be viewed or changed using the TD79 command.
•
The CT ratios for phase and neutral CTs can be viewed or changed using the CT command.
•
The 200 millisecond minimum hold time for the output contacts can be enabled or disabled.
The CT command allows the relay to be matched to your system’s external current transformers.
Separate settings are provided for the phase and neutral CTs. CT ratio adjustment is not provided
through the HMI.
Transformer Ratios
TD79R 79F 79M
10.0s 0m 0m
TD791 792 793
100m 1.0s 5.0s
TD4 TD5 TD6
30s 1.0s 10s
TD1 TD2 TD3
150m 50m 600m
PU1 PU2 PU3
6.00 1.50 0.05
RELAY SETUP
LOGIC = BFL1