Transformer ratios – Basler Electric BE1-BPR User Manual

Page 68

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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

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