Fronius Smart Meter 240V-3 UL Manual De Instrucciones página 13

Three-Phase Four-Wire Stinger
Three-Phase Two-Wire Corner Grounded Delta (only 240 V-3 and 480 V-3)
Connect Current
The current transformer must generate 333.33 millivolts AC at rated current.
Transformers See the current transformer data sheets for CT ratings (Fronius CT,
41,0010,0104 / 41,0010,0105 / 41,0010,0232 / 41,0010,0233).
-
-
-
-
-
-
D-
Fronius
Inverter
D+
-
CT L1
WHITE
CT L2
BLACK
CT L3
Source
Faces
Load
Faces
Current
Transformers
Do not use ratio or current output such as 1 amp or 5 amp output models!
See the CT data sheets for the maximum input current ratings.
Be careful to match the CTs with the voltage phases. Make sure the CT L1 is
measuring the current on the same phase being monitored by the L1 voltage
input and the same for phases L2 and L3. Use the supplied colored labels or
colored tape to identify the CT leads.
To minimize current measurement noise, avoid extending the CT wires, espe-
cially in noisy environments. If it is necessary to extend the wires, use twisted
pair cable 22 to 14 AWG, rated for 300 V or 600 V (not less than the service
voltage) and shielded if possible
Make sure the CTs face the correct direction. An arrow might indicate either
the load or the source (public grid)
If you see strange readings on unused phases, jumper the unused CT inputs:
for each unused CT, connect a short cable from the terminal marked with a
white dot to the terminal marked with a black dot.
Fronius Smart Meter
L1
L2
L3
240 Vac 120 Vac
240 Vac
240 Vac 120 Vac
208 Vac
Ground
N
Fuses or
Breaker ≤ 20 A
Phase L1
Phase L2
Phase L3
(Wild Leg)
Neutral
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