3
Install one CT (must be on phase A current connection) and
connect all three voltage leads to A,B, and C voltage
connections. Current inputs B and C should be jumpered
(see drawing below). If this option is selected, the calcula-
tions for kW demand are as follows:
kW DEMAND = E x
I
x 1.73 x (mA out -4) x 2
1000 x 16
Install 1 CT on the "hot" lead per the installation instruc-
tions (i.e., arrows facing the load) and connect the leads
from the CT to phase A current input. Connect the voltage
input from the "hot" lead to phase A voltage input and the
voltage from the neutral to the phase B voltage input.
Current inputs B and C should be jumpered. If this method
is used, the calculation for kW demand is as follows:
SINGLE PHASE VOLTAGE WITH A NEUTRAL
(e.g., 120 V), the following installation instructions
apply
(see drawing below)
:
SINGLE PHASE INSTALLATION ON THREE-PHASE
BALANCED LOADS
kW DEMAND = E x
I
x 1.73 x (mA out -4) x 3
1000 x 16
FORMULA DESIGNATIONS
240V, 3 WIRE, SINGLE PHASE
Hot
N
Hot
WHT
BLK
WHT
BLK
ØB
WHT
BLK
ØC
Required shorting links
LINE
ØA
LOAD
ØB
L-2
ØC
L-3
ØA
L-1
FUSE
FUSE
FUSE
L-1
L-2
L-3
FUSES: 600 V 1/4 AMP, 100 KAIC
Hot
WHT
BLK
WHT
BLK
ØB
WHT
BLK
ØC
Required shorting links
LINE
N
ØA
LOAD
ØB
L-2
ØC
L-3
ØA
L-1
FUSE
FUSE
FUSE
L-1
L-2
L-3
FUSES: 600 V 1/4 AMP, 100 KAIC
➜
120V (example)
Voltage
Select Switch
➜
240V (example)
Voltage
Select Switch
kW DEMAND = E x
I
x 1.73 x (mA out -4)
1000 x 16
WHT
BLK
AØ
WHT
BLK
ØB
WHT
BLK
ØC
Required shorting links
LINE
BØ
CØ
ØA
LOAD
ØB
L-2
ØC
L-3
ØA
L-1
FUSE
FUSE
FUSE
L-1
L-2
L-3
FUSES: 600 V 1/4 AMP, 100 KAIC
E = Line to Line Voltage
I
= Maximum rated full-scale of one CT in amps
mA out = 4 to 20 mA reading (supply DC source)
