www.lumel.com.pl

1

EXAMPLE OF APPLICATION

ND30PNET

- METER OF POWER NETWORK PARAMETERS

WITH

PROFINET

• Measurement of 54 power network parameters, including current and voltage harmonics

up to 63rd, in 1-phase 2-wire or 3-phase 3 or 4-wire balanced and unbalanced systems.

• High accuracy class (0.2S for active energy).

• Graphical color display: LCD TFT 3,5’’, 320 x 240 pixels, fully configurable by a user

(10 vies, 8 parameters in each).

• Additional 2 pages for harmonics presentation and 1 dedicated page for visualization

in

the form of an analog meter.

• Indications include the values of programmed ratios.

• Memory of minimum and maximum values.

• 2 configurable alarm outputs.

• Optional: analog output 0/4...20 mA and 2 PT 100 inputs (eg. for measurement

of transformer temperature), 2 galvanically isolated binary inputs 0/5...24V d.c.

• Archiving of up to 32 measured parameters in the internal memory 8 GB (option).

• Digital output RS-485 - MODBUS protocol.

• Modern and user-friendly Ethernet/Profinet (version 2.2.) interface.

• Programming of parameters using free eCon software.

• Battery backup RTC.

• Overall dimensions: 96 x 96 x 77 mm.

• mean phase-to-phase voltage: U

mf

• mean 3-phase current: I

S

• 15, 30, 60 minutes’mean active power: P

demand

• mean apparent power S

demand

• average current I

demand

• active, reactive and apparent 3-phase energy: EnP, EnQ, EnS

• active,reactiveandapparentenergyfromexternalcounter:EnPE

• total harmonic content coefficients for phase voltages

and currents THD

U1, THDU2, THDU3, THDI1, THDI2, THDI3

and for 3-phase voltages and currents THD

U, THDI

• harmonics for current and phase voltage up to 63rd!

• temperature (2 x Pt100 input)

• phase voltages: U

1, U2, U3

• phase-to-phase voltages: U

12, U23, U31

• phase currents I

1, I2, I3

• active phase powers: P

1, P2, P3

• reactive phase powers: Q

1, Q2, Q3

• apparent phase powers: S

1, S2, S3

• active power factors: PF

1, PF2, PF3

• reactive/active power factors: tg

j

1, tgj2, tgj3

• active, reactive and apparent 3-phase power: P, Q, S

• mean 3-phase power factors: PF, tg

j

• frequency f

• mean 3-phase voltage: U

S

MEASUREMENT AND VISUALIZATION OF POWER NETWORK PARAMETERS

0/4...20

A

m

1x

2x

RS-485 Modbus

Pt100

Pt100

T

1

T

2

SP1

SP2

->

Piec

Termopara K

Alarm

Alarm

Start/Stop

PLC

SCADA

LUMEL

PROCESS

L E

C T R I C

S A F E T Y

CAT III