ABB RELION 620 Series Technical Manual page 622

Protection and control

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Table of Contents

Protection functions

Table 557: PREVPTOC Output signals

Table 558: PREVPTOC Group settings (Basic)

Values (Range)

Operate delay time 100...60000

Table 559: PREVPTOC Non group settings (Basic)

Values (Range)

Monitored data

Table 560: PREVPTOC Monitored data

Technical data

Table 561: PREVPTOC Technical data

Characteristic

Operation accuracy

Start time ,

Retardation time

Table continues on the next page

Negative-sequence current before = 0.0, f

1000 measurements.

Includes the delay of the signal output contact.

Values (Range)

0.00...100.00

4=test/blocked

Depending on the frequency of the measured current: f

±1.5% of the set value or ±0.002 × I

Typically 40 ms

Typically 0.96

= 50 Hz, results based on statistical distribution of

1MRS757644 H

Operate delay time

Operation Off / On

Ratio of start time / op-

Technical Manual