Meco DU-96 User manual

DU96 : 28-09-2012
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3
DUAL PARAMETER METER
For W, VAR, VA & PF
MODEL : DU-96
User Manual
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I n d e x
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lIntroduction & Safety Recommendations 03
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lTechnical Specifications 04-05
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lProcessing Method 06-07
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lMechanical Dimensions 08
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lConnection Diagrams 09
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lDisplay Indication 10
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lModel Description 11-13
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lGeneral Warranty Certificate 16
Introduction
DU96 3 phase 3 element 4 Wire Meter is microcontroller based
electrical analyzer indicating TRMS value of electrical parameters. It
is a available with two parameters amongst W-VA-VAR-PF in six
different combination. It has 2 rows of LED display of 4 digit each.
It has factory set function such as CT Ratio, PT Ratio it should be
mentioned in ordering information.
Safety Recomendations
To guarantee the level of safety incorporated in the device, follow
the instructions below :
1) Adhere strictly to the connection diagrams for the installation
of the instrument.
2) Before gaining access to the terminal, ensure that the conductors
to be connected to the instrument are not live.
3) Make sure that the electrical panel in which the instrument is to
be placed is designed in such a way as to guarantee that the
terminals are inaccessible after installation.
Technical Specifications
Display : 2 groups of 4 digit LED display
height 14.2mm / 0.56”
Measuring Interval : 0.5 sec
Operating Temp., : 0°C to 50°C
Humidity : <90% RH. (Non Condensing)
Dimension (mm) : Front 96 x 96 mm
Depth 90 mm
Panel Cutout 92 x 92 mm
Weight : 490 gms.
Electrical Specifications
System : 3 Phase 3 Element 4 Wire
Auxiliary Power Supply :
Nominal (Range) : 230V AC (185~264VAC)
110V AC (90~126VAC) optional
Frequency : 50Hz
Burden : < 5 VA
Voltage Input :
Nominal : 230V / 240V AC (Phase - Neutral)
Measurement 400V / 440V AC (Phase - Phase)
Max. Range : 300V AC (Phase - Neutral)
520V AC (Phase - Phase)
Burden : < 0.1 VA / Phase
Accuracy Range : 50 ~ 300V (max.) Phase to Neutral
PT Ratio : Use PT for higher input ranges. PT Ratio
Fully Programmable (1.000 ~ 9999)
(factory set)
Current Input :
Nominal Measurement : 5A AC (internally isolated)
1A AC (against specific order)
Max. Range : 0 ~ 6VAC
Burden : < 0.5VA / Phase
Max. Overload Current : 200% for 1 sec. (10A max.)
Accuracy Range : 20 ~ 120%
CT Ratio : Use CT for Measurements above 5 Amps.
Fully Programmable (1.000 ~ 9999)
(factory set)
Accuracy :
Active Power * : ± 0.5% of Full Scale + 5 dgt
Reactive Power * : ± 0.5% of Full Scale + 5 dgt
Apparent Power * : ± 0.5% of Full Scale + 5 dgt
Power Factor : ± 1° Electrical
* Note : Watt, VAR, VA Accuracy at Power factor 0.3 Lag - Unity - 0.3 Lead
Processing method
a) Phase Values :
Effective phase voltage
Effective phase current
Active phase power
Apparent phase power
Reactive phase power
Phase power Factor
Vn(TRMS) =
[Vn(i)]2
N
S
i=1
N
In(TRMS) =
[In(i)]2
N
S
i=1
N
Pn=
Vn(i)In(i)
N
S
i=1
N
Sn= Vn(TRMS) X In(TRMS)
Qn=Sn2- Pn2
PFn= Pn
Sn

DU96 : 28-09-2012
1) Model : DU96 (W+PF)
This indicates system active power &
system PF with Lag & Lead indication.
2) Model : DU96 (VAR+PF)
This indicates system reactive power
at phase angle 900 & system PF with
Lag & Lead indication.
Model Description
(3 Phase 4 Wire System 240V / 5A & Phase angle 00)
Mechanical Diamensions
Model : DU-96
Front View Side View
96.0
t
t
96.0
t
t
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7
12
3) Model : DU96 (VA+PF)
This indicates system apparent power
& system PF with Lag & Lead
indication.
4) Model : DU96 (W+VAR)
This indicates system active power at
Phase angle 00system reactive power
at Phase angle 900
Display Indication
1) Numerical Field Zone
This consists of two rows of four digits
each. All Pararmeters are system
parameters. This consist of two
parameters.
a) Active Power (Watts)
b) Reactive Power (Var)
c) Apparent Power (VA)
d) Power Factor (PF)
In six different combination.
2) Customised Symbol Zone
This zone backs up the numerical
indications. This consist of six LED three
for each parameter as shown scale
below.
K = Kilo
M = Mega
-VE = Export Power
Note : For higher CT ratio / PT ratio
power will be scaled accordingly.
b) Equivalent system Values :
Equivalent system voltage
Equivalent system current
System active power
System reactive power
System apparent power
Equivalent system power factor
Connection Diagrams
3 Phase 3 Element 4 Wire

DU96 : 28-09-2012
5) Model : DU96 (W+VA)
This indicates system active power &
system apparent power.
6) Model : DU96 (VAR+VA)
This indicates system reactive power
at Phase angle 900 & system apparent
power Phase angle 00 & 900
NOTE
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CERTIFICATE OF CALIBRATION
We hereby certify that this product has been calibrated
and found to be in accordance with the applicable SPECIFICATIONS
and MECO STANDARDS.
Accuracies of the standard equipment used in this calibration are
traceable to the National Standards.
MECO INSTRUMENTS PVT. LTD.
Plot No. EL-1, MIDC Electronic Zone, TTC Industrial Area,
Mahape, Navi Mumbai - 400710, INDIA
Tel. : [phone]-16, 27673300 (Board)
Fax : [phone], 3330
E-mail : [email protected]
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SR. NO : _________________________________
CHECKED BY : _________________________________
DATE : _________________________________
MODEL NO : _________________________________
NOTE