ND30IoT, Energy Meter for 1- and 3-Phase Mains Networks, with Colour TFT Display
The digital programmable meter ND30 from LUMEL is used for parameter measurements of 1-phase 2-wire power networks as well as 3-phase 3-or 4-wire power networks insymmetrically and asymmetrically loaded systems.
The readings are shown on the 3.5" TFT colour display with a resolution of 320 x 240 pixels.
8 different colours are available on the screens for different display:
White, red, green yellow, olive, navy blue, light blue and pink.
The meter enables the control and optimization of the operation of power electronics systems and industrial systems.
It measures the effective values of current and voltage, e.g. active, reactive and apparent power, active, reactive and apparent energy, power factors, frequencies, current and voltage harmonics up to the 63rd, THD (Total Harmonic Distortion) of currents and voltages, the mean values of active power Pdemand, apparent power Sdemand and current Idemand (averaged over 15, 30 or 60 minutes).
The voltage and current values are multiplied by the nominal voltage and nominal current transformation ration of the upstream optional measuring transducers. The power and energy indicatos take into account the programmed translation values.
The value of each measured variable can be sent to a master system via the RS-485 or Ehernet interface.
The relay output signal that the selected measured values have been exceeded and the optional programmable analog output reflects the assigned parameter.
Depending on the version, the ND30 has 2 Pt100 temperature sensor inputs or 2 galvanically isolated binary inputs.
The temperature inputs can be used to control the temperature of the transformer and motor windings.
The meter has a galvanic isolation between the individual modules, such as:
- the power supply module
- the voltage input module
- the current input module
- the RS-485 interface
- the Ehternet interface
- the module of the alarm outputs
- the module of the analogue output
- the module of the Pt100 temperature inputs
- the binary inputs 0/5-24VDC
Characteristics:
- Measurement of 54 parameters and harmonics up to the 63rd harmonic for current and voltage in symmetrically or asymmetrically loaded single-phase 2-wire systems and three-phase 3-or 4-wire systems.
- 3.5" colour TFT graphic display, 320 x 240 pixels, user-programmable arangement of parameters in the displays (8 parameters in each of the 10 display pages)
- Displays that take into account the values of the programmed turn ratios
- Memory for maximum and minimum values
- 2 configurable alarm outputs
- Function of the monitoring relays for alarm outputs, optional: analogue output 0/4-20mA and 2 Pt100 inputs
- Optional RS-485 interface - Modbus protocol
- Archiving of up to 32 measurement parameters in internal 8GB data memory (optional)
- Modern and user-friendly Ethernet 10/100 BASE-T'm interface (otpional):
- Protocol: MODBUS TCP/IP, HTTP, FTP, Services: Web servber, FTP server, DHCP
- MQTT protocol for communication in distributed acquisition system data - IoT applications
- Parameter programming via free eCon software
- Real time clock (RTC) with battery backup
Measured and displayed parameters:
- phase voltages: U1, U2, U3
- phase-to-phase voltages: U12, U23, U31
- phase currents I1, I2, I3
- 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: tgPhi1, tgPhi2, tgPhi3
- active, reactive and apparent 3-phase power: P, Q, S
- mean 3-phase power factors: PF, tgPhi
- frequency f
- mean 3-phase voltage: US
- mean phase-to-phase voltage: Umf
- mean 3-phase current: IS
- 15, 30, 60 minutes? mean active power: Pdemand
- mean apparent power Sdemand
- average current Idemand
- active, reactive and apparent 3-phase energy: EnP, EnQ, EnS
- active, reactive and apparent energy from external counter: EnPE
- total harmonic content coeffi cients for phase voltages and currents THDU1, THDU2, THDU3, THDI1, THDI2, THDI3 and for 3-phase voltages and currents THDU, THDI
- harmonics for current and phase voltage up to 63rd!
- Temperature (with the optional 2 x Pt100 input)
Technical data:
Input current In: 1A or 5A
Input voltageUn: 3 x 57.7/100V or 3 x 230/400V
Display ranges:
Current In: (1A): 0.002 - 0.100 - 1.200A; (5A): 0.010 - 0.500 - 6.000A - 100.00kA (via upstream optional current transducers)
Voltage L-N: 23.000 - 46.000 - 276.00V (higher measuring range via upstream optional current transducer)
Voltage L-L: 40.000 - 80.000 - 480.00V (higher measuring range via upstream optional current transducer)
Frequency: 45.00 - 65.00 - 100.00Hz
Active power P, input or output: 0.000-19,999MW
Reactive power Q, capacitive or inductive: 0.000-19.999 MVAr
Apparent power Si: 0.000 - 1999.9VA - 19.999MVA
Active energy EnP, input or output: 0.000 - 99,999,000.000kWh
Reactive energy EnQ, capacitive or inductive: 0.000 - 99,999,999.999kVArh
Power factor PF: -1.00 to 0 bis 1.00
Tangens Phi: -999.99 to -1.20 to 0 to 1.20 to 999.99
THD: 0.0 - 100.0%
Supply voltage: Please select when ordering!
Relay output: 2 x programmable relay output, potential-free contacts (NO), 250VAC/0.5AAC
Display: 3,5" colour TFT graphical display, 320 x 240 Pixel
Weight: <300g
Dimensions: 96 x 96x 77mm³
Housing protection: IP65 (front), IP20 (terminals)
Options upon surcharge:
- 2 x relay, 1 x analogue output, 2 x Pt100 input
- 2 x relay, 1 x analogue output, 2 galvanically isolated binary inputs
- RS-485 and Ethernet port, internal 8GB memory
