LEM NORMA 5000 - Aron Circuit (Triaxial;Guard Technique); Direct Connection

Connection to Circuits
16 Power Analyzer NORMA 4000, NORMA 5000
EO1111G REV G
5.4 Aron circuit (triaxial/guard technique)
5.4.1 Direct connection
the Aron circuit is only available for 3-wire networks.
It is only required to measure two phases (currents I1 and I2 in the
connection diagram), as I1+I2+I3 must be 0.
Important
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!
 Ensure that there is no overload at the current input of the
power analyzer.
 If necessary, install appropriate fuses.
Fehler! AutoText-Eintrag nicht definiert.
Danger! Risk of electrocution!
Risk of injury when touching connections, internal circuits and
measuring devices that are not earthed.
 Always adhere to the instructions regarding the sequence of
connection (see page 12).
1
HI
CURRENT
LO
10 A max
PROBE
EXT.SHUNT
10 V max
HI
VOLTAGE
LO
1000 V max
2
HI
CURRENT
LO
10 A max
PROBE
EXT.SHUNT
10 V max
HI
VOLTAGE
LO
1000 V max
3
ALL INPUTS MAX 1000V CATII TO
L2
max. 10 m
L1
L3
I
1
I
2
U
13
U
23