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Lumel - ND10 power network meter

  • Interface RS485 Modbus Slave (option)
  • LCD display 3.5”
  • Pulse output for active energy
  • 2 alarm outputs

Measured quantities and measuring ranges:

Measured value

Indication range

Measuring range

L1

L2

L3

Σ

Basic error

 

Current in

1 A
5 A

0.00...1.5 kA
0.00...60 kA

0,005...1,2000 A~
0,025...6,000 A~

 

±0.2 % r

 

Voltage L-N

57.7 V
230 V
290 V

0.0...230.8 kV
0.0...1.012 MV
0.0...1.200 MV

50...64 V~
195...254 V~
246...300 V~

 

±0.2% mv

 

Voltage L-L

100 V
400 V
500 V

0.0...440 kV
0.0...1.752 MV
0.0...2.000 MV

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

 

±0.5% mv

 

Frequency

47.0...63 Hz

47,0...63,0 Hz

 

±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

1.0 VA...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

 

Imported active energy

0 ... 99 999 999.9 kWh

 

 

 

 

±0,5% r

 

Exported 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

 

r - of the range
mv - of the measured range

Outputs

 

Output type

Properties

 

Relay output

2 relays, normally open voltageless contacts,
load capacity 250 V~/0,5 A~

 

Pulse output of active energy

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

 

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,
monochromatic with backlit

 

 

Weight

< 0.3 kg

 

 

Overall dimensions

96 x 96 x 77 mm

panel cut-out: 92+0,6 x 92+0,6 mm

 

Protection on 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...64 V a.c. , 195...253 V a.c.,
246...300 V a.c.; 47...63 Hz

power consumption < 3 VA

 

Temperature

ambient: -20...23...55°C

storage: -30...70°C

 

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

 

Safety and Compatibility Requirements

 

Electromagnetic compatibility

noise immunity

acc. to EN 61000-6-2

 

noise emissions

acc. to EN 61000-6-4

 

Safety requirements

 

acc. to EN 61010-1

 

 


Example of Order:
The code:
ND10 - 2 2 1 00 E 1 means:

ND10 -

meter of network parameters of ND10 type

 

2 -

current input 5 A

 

2 -

input voltage 3 x 230/400 V

 

1 -

with RS485 interface

 

00 -

standard version

 

E -

all descriptions and users manual in English

 

1 -

with extra quality inspection certificate