ABB REG670 Commissioning Manual page 192

Section 13
Testing functionality by secondary injection
186
Generator rotor winding
G
Connection to be done
by the panel builder
REG 670
IEC06000498 V1 EN-US
Figure 53: Ten times amplification of current via a current transformer
The test described in steps
situations.
Procedure
1. The test should be prepared with a switch connected between the output of
RXTTE4 (221) and the station earth. Initially this switch is open.
2. First the 120 (230) V input to RXTTE4 is disconnected. This should give a signal
from REG670 that the injection voltage is low.
3. Reconnect the 120 (230) V input and check that the low injection voltage signal
resets.
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
RXTTE 4
421
I
428
324
U
325
1 to 6 can be done with the generator at stand-still
1MRK 502 073-UUS A
Optional
external resistor
221 222
313
230 V AC
314
120 V AC
315
0
en06000498.vsd
Commissioning manual