Hardware modification example - Arc protection - Auto synchronization - Bay control and measurement - Merging unit - Transformer protection - 2 winding - Feeder protection - Voltage regulation - Capacitor bank protection - Petersen Coil control - Grid automation - Busbar differential protection (high impedance) - Back-up protection - Motor protection - Busbar protection (voltage and frequency) - Transformer protection - 3 winding - Interconnection protection - Generator protection - Power management/Load shedding - Modification Sales Guideline - REX640 Protection and control - PCL4 - IEC - ANSI - 16.02.2023

REX640 Modification Sales Guideline

Table 1. Example of the Relay module modification information table included in the relay modification delivery
Slot Original relay Action Modified relay
Item Description Item Description
A1 Empty Unchanged Empty
A2

2RCA034483A

0001

COM1002 Unchanged

2RCA034483A

0001

COM1002
B

2RCA034506A

0001

BIO1001 Unchanged

2RCA034506A

0001

BIO1001
C

2RCA034536A

0001

BIO1002 Changed

2RCA034450A

0001

RTD1001
D

2RCA034536A

0001

BIO1002 Unchanged

2RCA034536A

0001

BIO1002
E Empty Added

2RCA034931A

0001

BIO1004
F

2RCA034442A

0001

AIM1001 Unchanged

2RCA034442A

0001

AIM1001
G

2RCA034455A

0001

PSM1001 Unchanged

2RCA034455A

0001

PSM1001

Explanations

  • Original relay columns define the slot allocation of the different modules that are included in the relay to be modified.
  • Action column defines the action to be done per each slot of the relay.
    • Unchanged: slot is not affected by the modification
    • Changed: slot content is changed by the modification, that is, to another module type
    • Added: a new module is added to an empty slot by the modification
  • Modified relay columns define the slot allocation of the different modules after the modification is completed.