ND10, Inexpensive 3-Phase Panel Multimeter, 96 x 96mm
The ND20Lite meter from LUMEL is a digital programmable panel meter designed for the measurement of single-phase power network parameters (2-wire network) and 3-phase, 3,4-wire network in balanced and unbalanced systems with the simultaneous display of measured quantities on a LCD display.
The ND20Lite enables the control and optimization of power electronics devices, systems and industrial installation operations.
The meter ensures the measurement of: RMS values of voltage and current, active, reactive and apparent power, active, reactive energy, power factors, frequency, 15, 30, 60 minutes’ mean active power, THD (Total Harmonic Distortion).
Additionally, the current value in the neutral wire is calculated. Voltages and currents are multiplied by given voltage and current ratios of measuring transformers. Indications of power and energy take into consideration values of programmed ratios.
The value of each measured quantity can be transmitted to the master system through the RS-485 interface. The relay output signals the overflow of the chosen quantity, and the pulse output can be used for the consumption check of 3-phase active and reactive energy.
The meter has a galvanic separation between respective blocks:
- supply voltage
- measuring inputs
- voltage and current inputs
- RS-485 output
- pulse output
Characteristics:
- Measurements of mains network parameters
- Programmable input current range: 1A or 5A
- Programmable input voltage range: 3 x 57.7/100V, 3 x 69.3/120V or 3 x 230/400V
- Power supply via the measuring circuit
- High accuracy class
- The displays take into account the values of programmed transformation ratios for upstream instrument transducers
- Modbus RS-485 communication interface
- One alarm output
- Pulse output
- Backlit 3.5" LCD display
- 3 years warranty
Technical data:
Input current In: 1A or 5A
Input voltage Un: 3 x 57.7/100V, 3 x 69.3/120V or 3 x 230/400V
Display ranges:
Current In: 0.00-12kA (1A), 0.00-60kA (5A) (via upstream optional current transducers)
Voltage L-N: 0.0-280kV / 333.0kV / 1.104MV (via upstream optional voltage transducer)
Voltage L-L: 0.0-480kV / 576.0kV / 1.92MV (via upstream optional voltage transducer)
Frequency 47.0-63.0Hz
Active power P, input or output: 0.00-9999MW
Reactive power Q, capacitive or inductive: 0.00-9999MVAr
Apparent power Si: 0.00-9999MVA
Active energy EnP, input or output: 0-99,999,999.9kWh
Reactive energy EnQ, capacitive or inductive: 0-99,999.999.9kVArh
Power factor PF: -1.00 to 0 to 1.00
Tangens Phi: -10.2 - 0 - 10.2
Cosinus Phi: -1 - 1
Phi: -180 - 180
THD: 0-100%
Relay output: 1 x programmable relay output, potential-free contacts (NO), 250VAC/0.5AAC
Pulse output for active energy: NPN, open collector, passive, class A according to EN 6205-31, voltage: 18-27V, current: 10-27mA
RS- interface: RS-485 Modbus
Display: 3.5" LCD, monochrome, backlit
Weight: <300g
Dimensions: 96 x 96 x 77mm³
Housing protection: IP65 (front), IP20 (terminals)
