ABB Relion 670 series - Page 1372

REX061
Coupling Capacitor unit
Rotor -
Rotor +
Injection
Measuring point +
Ground (measuring)
Measuring point -
Ground (injection)
PE
IEC11000040-3-en.vsd
IEC11000040 V1 EN-US
Figure 696: REX062 principle design
23.4 Shunt resistor unit REX062
23.4.1 Introduction
GUID-90D6AF74-D9AC-49B8-B2CA-8A94E58ADEA5 v1
REX062 is typically used when injection is done via a grounding transformer.
23.4.2 Design
GUID-D73D2D02-F06B-4284-95F3-FFC6D223E3DE v2
REX062 for stator protection is used when either injection via a grounding transformer (i.e. not via
a VT) is used or when maximum voltage posed on injection equipment by the generator is bigger
than 120V.
REX062
Shunt Resistor unit
Injection A
Injection B
External A
External B
I sense B
I sense A
Fuse
PE
IEC11000041-2-en.vsd
IEC11000041 V1 EN-US
Figure 697: REX062 Principal design
Section 23 1MRK 502 066-UUS B
Injection equipment hardware
1366
Technical manual