Novatech Bitronics M87X Series Manual page 120

A
B
C
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2-Element 3-Wire (Delta) configured for Dual Feeder Common Bus
A
B
C
N
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3-Element 4-Wire (Wye) configured for Dual Feeder Common Bus
ML0021 August 15, 2018
BUS (POTENTIALS COMMON TO BOTH FEEDERS)
VOLTAGE
9
VA1
10
VB1
11
VC1
12
VN1
BUS 1
4
A
HI
5
B
HI
6
C
HI
1
A
LO
2
B
LO
3
C
LO
CURRENT
BUS (POTENTIALS COMMON TO BOTH FEEDERS)
VOLTAGE
9
VA1
10
VB1
11
VC1
12
VN1
BUS 1
4
A
HI
5
B
HI
6
C
HI
1
A
LO
2
B
LO
3
C
LO
CURRENT
Figure 9 - Signal Connections (M872)
VOLTAGE
"Reference" potentials
VR1 and VR2 are
13
intended for synch-
VR1
check across the
respective feeder-
14
breakers.
VRN1
15
VR2
16
VRN2
BUS 2
24
A
HI
25
B
HI
26
C
HI
21
A
LO
22
B
LO
23
C
LO
CURRENT
"Reference" potentials VR1
VOLTAGE
and VR2 are intended for
13
synch-check across the
VR1
respective feeder-breakers.
14
VRN1
15
VR2
16
VRN2
BUS 2
24
A
HI
25
B
HI
26
C
HI
21
A
LO
22
B
LO
23
C
LO
CURRENT
104
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