7SA511 Line Protection Relay

Chapter 5

Table 5-19.Pilot Protection Permissive Underreach Transfer Settings

Addr.

2101

2102

2103

2104

2106

LCD Text

PUTT MODE

PUTT MODE

T-SEND-PRL

T-REC-PROL

T-SEND-DEL

Description

Turn permissive underreach transfer trip on or off

Transfer trip mode, either in zone Z1B with time delay T1B, or instantaneous trip with nondirectional fault detection

Time prolongation for signal transmission

Time prolongation for signal reception

Delay time for signal transmission

Preset

ON

Z1B

ACCELERATION

0.05s

0.00s

0.00s

Options/Range

OFF

FD ACCELERATION

0.01to 32.00 s

0.00to 32.00 s

0.00to 32.00 s

5.12.2 Permissive Overreach Transfer (2200)

For pilot protection permissive overreach transfer schemes, the parameters are set in address block 2200. The parameters for the echo keying function for pilot protection with distance protection are also in address block 2200. This echo keying function works independently from the echo keying function for directional comparison ground fault protection.

Table 5-20 lists the relay presettings and setting options available for the permissive overreach transfer schemes. Compare these presettings to the information on the completed worksheets and determine which settings you need to change to match your operating environment. When you have changed all of the necessary settings, follow the procedure described in section 5.3.4 to save the new settings.

Prerequisite Setting:

Addr.

LCD Text

7804

TELEPROTEC.

Description

Type of pilot protection

Setting

OVERREACH

July 27, 1995

5-35

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Image 119
Siemens 7SA511 Permissive Overreach Transfer, Putt Mode SEND-PRL REC-PROL SEND-DEL, Z1B Acceleration, OFF FD Acceleration