Aron Circuit (2-Wattmeter Method, W2); Direct Connection - Fluke NORMA 4000 Operator's Manual

NORMA 4000/5000
Operators Manual

Aron Circuit (2-Wattmeter Method, W2)

Direct Connection

The Aron circuit is only available for 3-wire networks, see Figure 5-5. It is only required
to measure two phases (currents I1 and I2 in the following connection diagrams), as
I1+I2+I3 must be 0.
In most cases, the Aron circuit is not acceptable for measurements on
inverters, as there are capacitive leakage currents from the windings to the
housing.
•
•
To select the Aron, or 2-wattmeter, Method, go to General Setup and select W2. Select
channels 2 and 3 for the connections. For more information, see Chapter 7,
"Configuration."
Scaling transformers for voltage and current may be used in this mode but care needs to
made in identifying the correct channel and measurement index information.
The W2 mode is not provided for the second set of three phase inputs with
the 4 or 6 channel versions of the NORMA 5000.
To avoid possible electric shock or personal injury:
•
•
5-8
Shop for Fluke products online at:
Ensure that there is no overload at the current input of the Power
Analyzer.
If necessary, install appropriate fuses.
XW Warning
Risk of injury when touching connections, internal circuits,
and measuring devices that are not connected to earth
ground.
Always adhere to the instructions regarding the sequence of
connection (see Chapter 5, "Connecting Sequence").
MyFlukeStore
www.
Note
Note
.com
1.888.610.7664