ABB REG670 Commissioning Manual page 179

1MRK 502 073-UEN A
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Commissioning manual
Testing functionality by secondary injection
Generator rotor winding
G
Connection to be done
by the panel builder
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.
REG 670
I
U
1 to 6 can be done with the generator at stand-still
Section 13
Optional
external resistor
RXTTE 4
221 222
421
428
313
230 V AC
314
120 V AC
315
324
325
en06000498.vsd
0
173