PHASE SEQUENCE
1-2-3
Correct sequence
1-3-2
Incorrect sequence
-----
Indicates that the device is not able to defi ne the sequence
Please consider that:
•
only the voltage sequence is detected;
•
the detection considers the hypothesis that the tensions are sinusoidal (or at least
slightly distorted) and belonging to a symmetrical (or almost) triad;
•
independently from the insertion 3W/4W, it is considered exclusively the sign of
voltage 2 and 3 in the zero-crossing of voltage for phase 1 - it is not calculated the
eff ective phase of the voltage fundamentals;
•
the phase sequence is indicated with the “L123”, “L132”, “L—“ symbols next to
frequency, in the voltages displaying page.
It is assumed:
L1 is the voltage with phase 0°
L2 is the voltage with phase 240° (in delay to L1)
L3 is the voltage with phase 120° (in advance to L1)
S1 S2 S1 S2 S1 S2
I1
I2
I3
L1
L2
L3
P1
P2
S1
S2
S1 S2 S1 S2 S1 S2
I1
I2
I3
L1
L2
L3
P1
P2
S1
S2
P1
P2
S1
S2
S1 S2 S1 S2 S1 S2
I1
I2
I3
L1
L2
L3
P1
P2
S1
S2
P1
P2
S1
S2
P1
P2
S1
S2
3P3W / 3P4W / 3I
3P3W
1P2W / 2P2W
S1 S2 S1 S2 S1 S2
I1
I2
I3
L1
L2
L3
P1
P2
S1
S2
3P3W-B / 3P3W-B-3U
3P4W-B / 3P4W-B-3U
1P2W
2P2W / 3P3W-B
Use cables with max cross-section of 2,5 mm
2
if stranded, 4 mm
2
if rigid and connect them
to the clamps marked VOLTAGE INPUT on the instrument according to the applicable
diagrams that follow.
VOLTAGE CONNECTION
U1 U2 U3
N
VOLTAGE INPUT
L
N
U1 U2 U3
N
VOLTAGE INPUT
L1
L2
L3
N
U1 U2 U3
N
VOLTAGE INPUT
L1
L2
L3
U1 U2 U3
N
VOLTAGE INPUT
L1
L2
L3
N
U1 U2 U3
N
VOLTAGE INPUT
L
N
3P4W / 3P4W-B-3U / 3I
3P3W / 3P3W-B-3U
3I
3P4W-B
U1 U2 U3
N
VOLTAGE INPUT
L1
N
L2
L3
CURRENT CONNECTION
Connect the CT outputs to the terminals marked I1, I2, I3 (CURRENT INPUT) of the
instrument according to the applicable diagrams that follow.
Note:
Scrupulously respect the matching of phase between the voltage signals and current
signals. Failure to comply with this correspondence and connection diagrams gives rise to
measurement errors.
The instrument is equipped with a separate power supply. The power supply terminals
are numbered (17) and (18). Use cables with max cross-section of 2,5 mm
2
if stranded,
4 mm
2
if rigid.
POWER SUPPLY
SERIAL LINE CONNECTION
POWER SUPPLY
1
230//- 10% 50/60Hz
2
F: 500 mA T
Max cable length: 1000 meters.
RS485
Address
27
Baud rate
38400
Parity
None
Bit of Stop
2
1
2
VOLTAGE INPUTS
POWER
SUPPLY
RS-485
18
17
V1 V2 V3 N
A B
T
VOLTAGE INPUTS
POWER
SUPPLY
RS-485
18
17
V1 V2 V3 N
A B
T
akse srl
Via Aldo Moro, 39 42124 Reggio Emilia Italy
Tel. +39 0522 924 244 Fax +39 0522 924 245 [email protected] www.akse.it
P.I. 01544980350 R.E.A. 194296 Cap. Soc. Euro 85.800,00 i.v.
Subject to modifi cation without notice.
Edition 2019 01 28 ENG0260
Made
in
Italy
Pensato, progettato e prodotto in Italia
Engineered and manufactured in Italy