WM12-DIN WM12-96
Instruction Sheet
Three Phase power analyser
INSTALLATION AND CONNECTIONS
PROGRAMMING
KEY PAD functions
access to the programming phase and
value confirmation.
On measuring mode: scroll to the pre-
viously displayed system variable. On pro-
gramming mode: scroll to the previous
function or parameter value decrease.
On measuring mode: scroll to the next
displayed system variable. On program-
ming mode: scroll to the next function or
parameter value increase.
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Technical Specifications
Hardware:
microprocessor based.
Keypad:
3 keys.
Type of electrical system
: Selectable: 1-phase,
2-phase, 3-phase with neutral; 3-phase without
neutral, 3-phase ARON.
Display:
LED 3x3 DGT; digit height 14mm
(96x96mm) or 9mm (DIN).
Displayed variables (by page)
V L1-N, V L2-N, V L3-N; V L12, V L23, V L31;
A L1, A L2, A L3, An; W L1, W L2, W L3; PF L1,
PF L2, PF L3; var L1, var L2, var L3; VA L1, VA L2,
VA L3; W sys, var sys, VA sys; Hz, W dmd, VA dmd
W dmd max; V LL sys, W sys, PF sys, Amax
Sampling time:
700ms
Rated input current:
5A
Max input current:
6A (on ext. C.T.)
Overload:
36A (6*Imax) for 500ms; Voltage: per-
manent 1.2 * max range function value
Rated input voltage
AV5: 660V L-L 5(6)A; AV6: 208V L-L 5(6)A
Wave-form:
sinusoidal or distorded wave.
Measurement method
TRMS type
Accuracy: W-VA:
±(1% FS + 1DGT) from 0.25A to
6A±(1% FS + 7 DGT) from 0.03 to 0.24A;
var:
±(2%
FS +1DGT) from 0.25 to 6A ±(2% FS +5 DGT);
V LL:
±(1.5% FS+1 DGT);
VL-N:
(0.5%FS +1 DGT);
A:
±(0.5% FS +1 DGT) from 0.25 to 6A, ±(0.5% FS +7
DGT) from 0.03 to 0.25A;
An:
±(1.5% FS +1 DGT) from
0.25 to 6A, ±(1.5% FS +7 DGT) from 0.03 to 0.25A
Voltage/ An control:
Alarm: two set points
Peak factor:
<3 (10A peak max)
Temperature drift:
≤
200ppm/°C
Current transformer:
prog. ratio from1 to 999
Voltage transformer:
prog. ratio from1.0 to 99.9
Input impedance
400/660VL-L: 1M
Ω
(phase-neutral input)
100/208VL-L: 453k
Ω
(phase-neutral input)
Power demand
Prog. integration time: 1 to 30 min.
Digital filter:
Filtering range: from 0 to 100;
filtering coefficient: from 1 to 16
EMC:
emissions: EN50084-1 (residential, class A)
Immunity: EN61000-6-2 (industrial, class A)
Power supply:
CT-VT: 230V, 115V, 24V, 48VAC
-15/ +10% 50-60Hz; 24 to
48
VDC
±20%
Operating temperature:
from 0 to +50°C
Storage temperature:
from -10 to +60°C
Relative humidity (non condensing)
: 0-90% @40°C
Installation category (IEC 664):
Cat. III
Insulation:
AC power supply, 4kV for 60s bet-
ween measuring input and power supply and
between power supply and RS485, 500V for 60s
between measuring input and RS485. DC power
supply, 500V between meas. input and power
supply and between power supply and RS485.
Dielectric strength:
4kV for 60s.
Standards:
safety IEC-664.
Approvals:
CE
Connections:
screw type; Max. cable cross sect.:
2.5mm
2
Protection degree
Front: IP50; Terminal blocks: IP20.
Mounting:
DIN-rail mounting. Flush mounting.
Housing material:
ABS, self-extinguishing: UL94 V-0
Dimensions:
see the drawings below
Weight:
about 400g (packing included).
Output Specifications
Serial port RS485 (optional)
2 or 4 wiring
Communicatioon protocol:
MODBUS/ JBUS
Baud rate:
9600 baud
Parity:
none
Line termination:
by means of external jumper
Line bias:
not available
Address:
1 to 255
Variable to be transmitted:
all the displayed
variables.
Reset and access to the main menu
A.rE :
reset the alarms.
P.rE :
reset the displayed MAX current value
and Wdmd.
PAS :
if you enter the correct password
(the default password is 0) you access to
the main menu.
The main menu functions
n_P :
new password, change password
function.
SYS :
electrical system selection, choose the
correct electrical system: 3P.n: 3-phase with
neutral, 3P.A: 3-phase ARON, 3P: 3-phase
without neutral, 2P: 2-phase,1P: 1-phase.
Ct.r :
current transformer ratio: select the
needed value from 0 to 999.
Example:
if
the primary of the CT being connected is
300A and the secondary is 5A, the CT ratio
corresponds to 60 (obtained from the calcu-
lation: 300/5).
Ut.r :
voltage transformer ratio: select the
needed value from 1.0 to 99.9.
Example:
if
the primary of the VT being connected is
5kV and the secondary is 100V, the VT ratio
will be 50 (given by 5000/100).
P.i.t. :
power integration time: select the
needed value from 1 to 30 minutes.
Adr :
instrument serial port adress: from 1 to
255. If the serial port communication is not
present the “adr” menu won’t be displayed.
Fis :
filtering range programming to set the
operating range of the digital filter. The value
is expressed as % of the full scale value.
Fic :
filtering coefficient programming to set
the filtering coefficient of the instantaneous
measurements. Increasing the value, also
the stability and the settling time of the mea-
surements are increased.
AL. :
Up alarm (V LN), it’s the max value of
the variable over which the alarm is activated.
AL. :
Down alarm (V LN), it’s the min value of
the variable over which the alarm is activated.
Note:
if the “AL up” and “AL down” values are
the same the V LN alarm will be disabled. The
alarm status is displayed by a blinking LED.
AL.n :
neutral current alarm, it’s the value
of the variable over which the alarm is acti-
vated. If the AL.n value is 0, the neutral
current alarm control will be disabled. The
alarm status is displayed by a blinking LED.
End :
to confirm the new selected values
press the
key, or press
to return to
the main menu functions.
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107.5
62.1
96
61.4
15.4
50
32.2
90
45
96
96
A-
CT connection, 3/4 wire system
B-
VT connection, 4 wire system
C
- ARON CT connection
D
- ARON VT connection
E-
2 phase CT connection
F-
RS485 4-wire connection (the CT’s
must be connected to ground).
1-
Final
Instrument
2-
Instrument
1...n
3-
SIU-PC
[A]
[B]
[C]
[D]
[E]
[1]
[2]
[3]
[F]
WARNING
When the CT are connected to earth, a leakage
current from 0 to 1.8mA max is generated to
earth, whose value depends on the input impe-
dance value, the type of connection and the line
voltage measured from the instrument.
When the phase to
phase volta-
ge are displa-
yed or W-var
are generated, the deci-
mal points on the right of
the display are blinking.
NOTE:
the maximum panel thickness must be
10mm.
Measuring mode
Measuring mode
RESET
RESET
Uncorrect password
Correct password
Main menu
Code 8020591 - Rev. 2 - Sept. 2002
W
ARNING:
the current inputs can be connected to the lines ONL
Y
through current transformers.
The direct connection is not allowed.
