EMC-D3b
EMC-D3b-485
instructon manual
IM450-U v3.1
page 1
INSTRUCTION MANUAL
IM450-U v3.1
EMC-D3b
ENERGY MULTIFUNCTION COUNTER
EMC-D3b-485
AVAILABLE MODELS
EMC-D3b
: 3-phase energy counter with 7+1 digit display. 1 digital
input and two digital pulse output for kWhr and kVArhr.
EMC-D3b-485
: 3-phase energy counter with 7+1 digit display, 1
digital input, two digital pulse output for kWhr and kVArhr, EIA-
RS485 serial communication port, Modbus RTU protocol.
Both are manufactured in DIN rail mounting case 6 modules 17.5
mm.
INTRODUCTION
The EMC-D3b models allows the local or remote counting of the
energy, with the help of a serial interface.
It is possible to set the instrument to count in 3 differents mode
(Normal / Total and partial / Timeband).
Also the instrument is equipped with a digital input which can cover differents function. See the
digital input
section for
more information.
The auxiliary power supply is taken from same Voltage inputs (VL1 and VL2), used for measuring.
It’s available as option the instrument for single phase networks.
OPTIONS and ACCESSORIES
options
: - internal CT's (
not for direct line insertion
) (order with -t suffix)
- current inputs for ... /1A current transformer (order with /1A suffix)
- current sensor for low current measures (Max 15 Amp) (specify when ordering)
- power supply and measuring voltages other than the standard (specify when ordering)
- power supply separated from measuring voltage (specify when ordering)
- single phase network ( power supply is taken from VL1 and neutral) (specify when ordering)
MEASURED PARAMETERS
Parameters showed in counter mode
Unit of measure
Identifying abbreviations
three phase system active energy
[kWhr]
kWh
three phase system reactive energy
[kVArhr]
kVArh
three phase system apparent energy
[kVAhr]
kVAh
Parameters showed in meter mode
unit of measurement
initial identification
phase voltages
[V-kV]
V
L1-N
V
L2-N
V
L3-N
phase to phase system voltages
[V-kV]
V
L1-L2
V
L2-L3
V
L3-L1
phase currents
[A-kA]
A
L1
A
L2
A
L3
phase power factors
PF
L1
PF
L2
PF
L3
phase active powers
[W-kW-MW]
W
L1
W
L2
W
L3
phase reactive powers
[VAr-kVAr-MVAr]
VAr
L1
VAr
L2
VAr
L3
phase apparent powers
[VA-kVA-MVA]
VA
L1
VA
L2
VA
L3
frequency [Hz]
Hz
L1
These parameters are available only on EMC-D3b-485 model and readable only by RS485 interface.
Peak, average and max demand value
unit of measurement
Initial identification
maximum phase voltages
[V-kV]
V
L1-N max
V
L2-N max
V
L3-N max
maximum phase currents
[A-kA]
A
L1
max
A
L2 max
A
L3 max
maximum three-phase powers
[W-VAr-VA (k-M)]
W
max
VAr
max
VA
max
maximum average phase currents (maximum demand)
[A-kA]
I
L1 max (avg)
I
L2 max (avg)
I
L3 max (avg)
maximum average three-phase powers (maximum demand) [W-VAr-VA (k-M)]
W
max (avg)
VAr
max (avg)
VA
max (avg)
average phase currents
[A-kA]
A
L1
avg
A
L2 avg
A
L3 avg
average three-phase powers
[W-VAr-VA (k-M)]
W
avg
VAr
avg
VA
avg
