Digital Power Meter

www.itmikro.com

DPM 380
380B
Features
LCD display with back lighting with Modbus-RTU
communication

MEASUREMENT PARAMETERS:
• Phase Voltage (L-N) & Line Voltage (L-L)
• Min & Max Phase and Line Voltage
• Phase Current and Neutral Current
• Min & Max Phase Current and Neutral Current
• Bidirectional kW (per phase & total)
• Bidirectional kVAR (per phase & total)
• kVA (per phase & total)
• Min & Max kW, kVAR and KVA
• Frequency
• True & Displacement Power Factor (per phase &
total)
• Energy kWh, kVARh and kVAh
• THD Phase Voltage ( L-N )
• THD Phase Current
• Power Demand (kW, kVAR & kVA)
• Maximum Power Demand (kW, kVAR & kVA)

Technical Data
DISPLAY TYPE POWER DEMAND ENVIRONMENTAL CONDITIONS
LCD display Interval : 1 ~ 30 mins Temperature : -10°C to 55°C
Humidity : 5% to 95%,
MEASUREMENTS POWER FACTOR MEASUREMENT non-condensing
3-phase 4-wire system Total and displacement power factor
3-phase 3-wire system Accuracy : 1.0% MECHANICAL
Mounting : Panel mounting
CURRENT MEASUREMENT (TRMS) FREQUENCY MEASUREMENT Dimension (mm) : 96(w) x 96(h) x 87.5(d)
CT primary : 5 ~ 9995 A Measurement range : 45 ~ 65 Hz Approximate weight : 0.48kg
CT secondary : 5 A Measurement updating period : 1s Enclosure protection : IP54 at the panel
Minimum measurement : 5 mA Accuracy : 0.5% IP20 at the body
Accuracy : 0.5% from 1A to
6 A (secondary) ENERGY ACCURACY
Burden : < 0.05 VA at 5 A Active (according to IEC 62053-21) : class 1
Sustained overload : 6 A Reactive (according to IEC 62053-23) : class 2
DPM 380/380B

VOLTAGE MEASUREMENT (TRMS) AUXILIARY POWER SUPPLY

Nominal phase voltage : 20 ~ 300 V AC AC voltage : 90 ~ 415 V AC
Minimum measurement :10 V Frequency : 50 / 60 Hz
Accuracy : 0.5% at full scale DC voltage : 100 ~ 300 V DC
Phase voltage via VT : 60 ~ 33,000 V Power consumption : <3 VA

POWER MEASUREMENT COMMUNICATION

Real power, apparent power, reactive Hardware interface : Isolated RS485
power Protocol : Modbus-RTU
measurement Baud rate : 2400, 4800, 9600,
Measuring updating period : 1 s 19200, 38400
Accuracy : 1.0%
Digital Power Meter

www.itmikro.com

Typical Application Diagram Case Dimensions

3-PHASE 4-WIRE SYSTEM:4CTs, direct V input. 3-PHASE 4-WIRE SYSTEM:3CTs, direct V input.

19 19
20 20
1 1
2 2 Front

96mm
3 3
4 4
5 5
6 6
7 7
8 8
13
15 15 14 96mm
13
16 12
14 16

17 12
17
18 18

Rear

90.5mm
3-PHASE 3-WIRE SYSTEM:3CTs, 3VTs 3-PHASE 3-WIRE SYSTEM:2CTs, 3VTs

19 19
20 20
1 1
2 2 17.5mm
3 87.5mm
3
4 4
5 5
6 6
7 7
8 8
13 13
15 15
14 14 1 2 3 4 5 6 7 8
16 12 12
16 90.5mm
17 17
18 18
9 10 11 12 13 14 Back
15 16 17 18 19 20

90.5mm

Cut-Out Recommendations
−0.5mm

Electromagnetic Compatibility (EMC)

91 +

Part 6-2: Generic Standards IEC61000-6-2

Immunity for industrial environments.
91 +
− 0.5mm
DPM 380 / 380B

Part 6-4: Generic Standards IEC61000-6-4

Emission standard for industrial environments.

Ordering Information
MODEL DESCRIPTION
DPM 380-415AD Auxiliary Voltage 90 ~ 415 V AC or 100 ~ 300 V DC, with RS 485
DPM 380B-415AD Auxiliary Voltage 90 ~ 415 V AC or 100 ~ 300 V DC