GE ALPS - Page 180

5-18 ALPS Advanced Line Protection System
GE Power Management
5.4 PHASE-TO-PHASE ZONE REACH TESTING 5 FUNCTIONAL TESTS (FACTORY SETTINGS)
5
Figure 5–3: PHASE-REACH TIMER TEST CONNECTIONS
3 PHASE, 4 WIRE
VOLTAGE SOURCE
PHASE SEQUENCE:
A, B, C
SINGLE PHASE
CURRENT SOURCE
RATED DC POWER
SUPPLY
48, 125, 230 V DC
A25
A9
C10
C11
C12
X
Y
C4
C6
C9
A18
A2
N
I
op
N
VC
VB
VA
VA
VB
VC
+
CASE GROUND
SURGE GROUND
Programmable
Contact A1
RELAY
UNDER
TEST
START
STOP
A1
A17
C2
PRECISION TIMER
STOP
START
X and Y are connected
to produce a phase-to-
phase fault. See the
Table below.
Table 5–2:
PHASE
UNDER TEST
INPUT Y
(TERMINAL
BLOCK
NUMBER)
INPUT X
(TERMINAL
BLOCK
NUMBER)
AB C1 C3
BC C3 C5
CA C5 C1