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LUMEL
LUMEL

3-Phase Network Meter, ND20Lite

  • Measures parameters in 2,3 or 4 wire balance/unbalanced systems
  • 3.5" LCD Screen
  • RS485 MODBUS slave

Product description

  • Measurement of power network parameters in 2,3 or 4- wire balanced and unbalanced systems
  • High accuracy class
  • Indications considering values of programmed ratios
  • THD
  • Backlit LCD 3.5” screen
  • Protection grade from the frontal side: IP65
  • Digital transmission to the master system through the RS-485 interface (MODBUS)
  • Configurable alarm and pulse outputs (energy)
  • Configuration of displayed pages

 

 

Measured value

Indication range*

Measuring range

L1

L2

L3

Basic error

Current  In

1 A

0.00…12 kA

0.002…1.200 A~

 

±0.2% r

5 A

0.00…60 kA

0.010…6.000 A~  

Voltage L-N

57.7 V

0.0…280 kV

2.8…70.0 V~

 

±0.2% r

230 V

0.0…1.104 MV

11.5…276 V~

Voltage L-L

100 V

0.0…480 kV

 

 

±0.5% r

400 V

0.0…1.92 MV

 

Frequency

47.0…63.0 Hz

47.0…63.0 Hz

 

±0.2% mv

Active power

-9999 MW…0.00 W…9999 MW

-1.65 kW…1.4 W…1.65 kW

±0.5% r

Reactive power

-9999 Mvar…0.00 var…9999 Mvar

-1.65 kvar…1.4 var…1.65 kvar

±0.5% r

Apparent power

0.00 VA…9999 MVA

1.4 VA…1.65 kVA

±0.5% r

Power factor  PF

-1…0... 1

-1…0... 1

±1% r

Tangent j

-1.2...0...1.2

-1.2...0...1.2

±1% r

Cosinus j

-1... 1

-1... 1

±1% r

j

-180…180

-180…180

 

±0.5% 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

Reactive inductive energy

0…99 999 999.9 kvarh

 

 

 

 

±0.5% r

Reactive  capacitive energy

0…99 999 999.9 kvarh

 

 

 

 

±0.5%  r

Apparent energy

0 ..99 999 999.9 kVAh

 

 

 

 

±0.5% r

THD

0…100%

0…100%

 

±5% 

* Depending on the set tr_U ratio (ratio of the voltage transformer: 0.1...4000.0) and tr_I ratio (ratio of the current transformer: 1...10000)

r - of the range      mv - of the measured value

 

Technical data

Outputs

Kind of output

Properties

Relay output

Programmable relay output, normally open voltageless contacts,
load  capacity 250 V~/0.5 A~

Pulse output of active or reactive energy

1 OC type, passive

 

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 ´ 96 ´ 77 mm

panel cut-out: 92.5+0.6 ´ 92.5+0.6 mm

Protection grade (acc. to EN 60529)

from frontal side: IP65

from terminal side: IP20

 

Rated Operating Conditions

Supply voltage

85...253 V a.c., 90...300 V d.c.,
20...40 V a.c., 20...60 V d.c.

Temperature

ambient: -25...23...55°C

storage: -30...70°C

Relative humidity

25...95% 

inadmissible condensation

Operating position

any

 

External magnetic field

0...40...400 A/m

 

Short duration overload (1 s)

voltage input: 2Un (max. 1000 V)

current input: 10 In

Power consumption

- in the supply circuit £ 6 VA, 

- in the voltage and current circuits  £ 0.05 VA

 

 

Safety and Compatibility Requirements

Electromagnetic compatibility

noise immunity

acc. to EN 61000-6-2

 

noise emissions

acc. to EN 61000-6-4

Isolation between circuits

basic

acc. to EN 61010-1

Installation category

III

Polution level

2

Maximal phase-to-earth voltage

for supply and measuring circuits: 300 V; for other circuits: 50 V

Altitude a.s.l.

< 2000m

 

Meter connection diagrams

 

Order numbers

 

Parts Price

Part

ND20LITE22100E0
3-PH NETWORK METER 230/400V 5A

Resource

Contact us

If you need any help, you can contact us in one of the following ways:

0116 284 9900

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