ABB RET670 - Page 243

Figure 52 shows the general test connection for a breaker-and-a-half diameter with one-
phase voltage connected to the line side.
Test
equipment
VMeasure
Ph/N
Ph/Ph
ANSI05000480-3-en.vsd
V-Bus
V-Line
N
IED
V-Bus
N
VA
VB
VC
VN
Input Phase
A,B,C
AB,BC,CA
VMeasure
Ph/N
Ph/Ph
Input Phase
A,B,C
AB,BC,CA
ANSI05000480 V3 EN
Figure 51: General test connection with three-phase voltage connected to the line
side
1MRK 504 165-UUS - Section 11
Testing functionality by secondary injection
Transformer protection RET670 2.2 ANSI 237
Commissioning manual