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LUMEL
LUMEL

3-Phase Network Meter, ND1

  • Measures parameters of 3-Phase or 3/4 wire symetrical/asymetrical systems
  • RS485 MODBUS (Optional)
  • 2 Alarm outputs, 1 Pulse output for active energy

Product description

Measurement, visualization and recording of over 300 parameters of 3-phase balanced or unbalanced power network

  • phase voltages: U1, U2, U3and phase currents: I1, I2, I3
  • phase-to-phase voltages: U12, U23, U31
  • active phase powers: P1, P2, P3
  • reactive phase powers: Q1, Q2, Q3
  • apparent phase powers: S1, S2, S3
  • active power factors: PF1, PF2, PF3
  • reactive/active power factors: tgφ1, tgφ2, tgφ3
  • mean phase-to-phase voltage: UsUmf
  • current in neutral wire and mean 3-phase current: Io, Is
  • active, reactive and apparent 3-phase power: P, Q, S
  • mean 3-phase power factors: PF, tgφ
  • frequency f and frequency deviation
  • 15 minutes’ mean active power: PAV
  • active, reactive and apparent 3-phase energy: EnP, EnQ, EnS
  • THD for voltage and phase current
  • harmonics for current and phase voltage up to 51 st !
  • storage of min and max values
  • recording of dips and voltage decays
  • monitoring of run function
  • voltage asymetry
  • flicker parameters: PST, PLT

Technical data

Measured quantities and measuring ranges:

Kind of input

Measuring range

Parameters

Basic error

Voltage input

57.7/100V, 230/400 V or 400/690 V

0.05...1.2 Un

± 0.2%

Current input

1A or 5A

0.005...1.2 In

± 0.2%

Logic input

12 inputs: 0/5...24 Vdc

switch frequency up to 50 Hz

 

Outputs

Output type

Properties

Analog output

4 programmable current outputs of 0/4...20mA,
load resistance < 500 Ω

Relay output

• 6 programmable electromagnetic relays
• voltageless NOC contacts,
load capacity: 250 Vac/1A ac

Output to supply object transducers

• 2 ouptuts of 24 Vdc/30mA

Digital Interface

Interface type

Properties

RS-485

2 interfaces: MODBUS slave and master,
baud rate: 300...256000 bit/s,
transmission mode ASCII/RTU

USB

Device C.1.1, USBB-G socket

Ethernet

10 Base-T, RJ45 socket, Modbus Slave TCP/IP

Rated Operating Conditions

Supply voltage

85...230...253 V a.c./d.c., 40 .. 400 Hz or d.c.

power consumption ≤ 30VA

Ambient temperature

Work: 0...23...50°C

Storage: -20...60°C

Relative humidity

< 70%

Condensation inadmissable

Reaction against

supply decays

Data and device state preservation

supply recovery

Continuation of device work

 

Short term load (5s)

2 Un (max. 1000 V)

10 In

Casing protection grade

From frontal side: IP 65

From terminal side: IP20

Safety requirements

Installation catagory: II

EN 61010-1

Pollution grade: 2

Maximum phase to
earth operating voltage

From the measuring system,
relays and supply: 500 V

For RS485 and USB
interfaces: 50V

Measuring ranges and admissible basic conversion errors

Measuring quantity

Range

Basic error

Remarks

Voltage U

57.73/100.0 V (Ku=1)
230.0/400.0 V (Ku=1)
400.0/690.0 V (Ku=1)
400.0 kV (Ku≠1)

± 0.2 %

Ku = 1...4000

Current I

1.000 a (kI=1)
5.000 a (kI=1)
100.0 kA (Ki≠1)

± 0.2 %

Ki = 1...20000

Active power P
Mean active power Pav

0.0... (-) 6000,0 W
999.00 MW (Ku≠1, Ki≠1)

± 0.5 %

 

Apparent power S

0.0...6000.0 VA
999.00 MVA (Ku≠1, Ki≠1)

± 0.5 %

 

Reactive power Q

0.0... (-) 6000.0 Var
999.00 Mvar (Ku≠1, Ki≠1)

± 0.5 %

 

Active power factor PF

-1.000...0...1.000

± 0.5 %

PF = Power
Factor = P/S

Coefficient tgφ

-10.00...0...10.00

± 1 %

Ratio of active
power to reactive

φ angle between U and I

-180°...180°

± 0.5 %

Evaluated from
the power triangle

Frenquency f

45.00...66.00 Hz

± 0.1 %

 

THD U, THD I
Harmonics U, I (up to 51st)

0.200.0%
0.100.0%

± 2 %

Error in the range
10...120 % U, I

PST, PLT

0...20

± 0.5 %

in range of 0.05...35 Hz

Active energy EnP

0...(-) 99 999 999.9 kWh

± 0.5 %

 

Reactive energy ENQ

0...(-) 99 999 999.9 kvarh

± 0.5 %

 

Where:

 

Ku

voltage transformer ratio

Ki

current transformer ratio

THD U

total coefficient of voltage harmonic distortion

THD I

total coefficient of current harmonic distortion

 

Housing dimensions

 

Ordering code


Example of Order:
The code:
ND1 - 2 1 00 E 0 means:

ND1 -

analyser of 3-phase power network parameters of ND1 type

2 -

current input: 5 A

1 -

voltage input: 57.7/100 V

00 -

standard version

E -

English language

0 -

without extra quality requirements

 

Portable housing

 

Parts Price

Part

ND12200E0
3-PH NETWORK ANALYZER 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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