3 Phase Power Monitoring Meter - LUMEL ND10

Ideal for: Panel instrumentation, Sub-billing/cost allocation & Remote monitoring of an electrical installation applications.

 

Panel mounted 3 phase power monitoring network meter, the ND10 can display indirect measurements in 3 phase 4 wire balanced and unbalanced systems and THD factors for currents and voltage.

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Overview

Features include:

  • measurement of:
    • power network parameters in 4- wire balanced and unbalanced systems,
    • THD factors for currents and voltage,
  • indications considering values of programmed ratios,
  • 2 alarm outputs, 1 pulse output for active energy,
  • RS485 interface output with MODBUS protocol (option), 
  • protection grade from the frontal side: IP65.
  • dimension: 96 x 96 x 77mm

 

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Technical Information

 

MEASURED QUANTITIES AND RANGES

Measured value

Indication range

Measuring range

L1

L2

L3

Basic error

 Current In

1A 
5A

0.00 to 1.5kA 
0.0 to 60kA

0.005 to 1,200A~

0.025 to 6,000A~

 

±0.2 % r

 Voltage L-N

57.7V 
230V 
290V

0.0 to 230.8kV 
0.0 to 1,012MV 
0.0 to 1,200MV

50 to 64V~  
195 to 253V~  
246 to 300V~

 

±0.2% mv

 Voltage L-L

100V 
400V 
500V

0.0 to 440 kV 
0.0 to 1,752 MV 
0.0 to 2,000 MV

85 to 110V~ 
340 to 440V~ 
425 to 520V~

 

±0.5% mv

Frequency

47 to 63Hz

47 to 63Hz

 

±0.2% mv

Active power

-9999 MW .. 0.00 W .. 9999 MW

-1.52 kW...1.0 W...1.52 kW

±0.5% r

Reactive power

-9999 Mvar .. 0.00 var ... 9999 Mvar

-1.52 kvar...1.0 var...1.52 kvar

±0.5% r

Apparent power

0.00 VA .. 9999 MVA

1.0VA...1.52 kVA

±0.5% r

Power factor PF

-1...0…1

-1...0…1

±1% r

Tangent φ

-1.2...0...1.2

-1.2...0...1.2

±1% r

Cosine φ

-1...1

-1...1

±1% r

φ

-180...180

-180...180

 

±0.5% r

Imported active energy

0...99 999 999.9 kWh

       

±0.5% r

Imported active energy

0...99 999 999.9 kWh

       

±0.5% r

Inductive reactive energy

0...99 999 999.9 kvarh

       

±0.5% r

Reactive capacitive energy

0...99 999 999.9 kvarh

       

±0.5% r

THD

0…100%

0…100%

 

±5% r

 

OUTPUTS

Output type

Properties

Relay output

• 2 relays, normally open voltage free contacts, load capacity 250V ~ / 0.5A~

Pulse output of active energy

• 1 OC type (NPN), passive class A acc. to EN 62053-31, supply voltage 18...27V, current 10...27mA

 

DIGITAL INTERFACE

Interface type

Transmission protocol

Mode

Baud rate

RS-485

MODBUS RTU

8N2, 8E1, 8O1, 8N1

4,8; 9,6; 19,2; 38,4  kbit/s

 

EXTERNAL FEATURES

Readout field

LCD 3.5” screen, specialized, monochrome with backlit

 

Weight

< 0.3 kg

 

Overall dimensions

96 X 96 X 77 mm

panel cut-out::92+06 X 92+06 mm

Protection grade (acc. to EN 60529)

from frontal side: IP65

from terminal side: IP20

 

RATED OPERATING CONDITIONS

Supply voltage /from measurement 
circuit of phase L3/

50...64Vac , 195...253Vac, 
246...300Vac; 47...63Hz

Power consumption:
- in voltage circuit L1, L2 ≤0.05VA
- in voltage circuit L3 ≤3VA
- in current circuit ≤0.05VA

Temperature

ambient: -20...55oC

storage: -30...70oC

Relative humidity

25...95%

inadmissible condensation

Operating position

any

 

External magnetic field

40...400 A/m

 

Short duration overload (5 s)

voltage input: 2 Un

current input: 10 In

Outputs - Number and Types
3 in total, 2 alarm outputs, 1 pulse output for active energy
Communication
RS485 Modbus Slave Option
Supply Voltages
85 to 253Vac or 20 to 40Vac/dc.
Panel Sealing
Front = IP65, Rear = IP20
Approvals
CE
Dimensions and Fixing Holes
96 x 96 x 77mm (1/4 DIN)
Operating Temperature
-20 to 55 deg. C

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Installation (Click on images for larger view)

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Documentation

Technical Data Sheet
Operating & Installation Manual

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Videos

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