N27D meters are designed for direct a.c. measurement of voltage, current, frequency and active power. The design allows for installation of the meter for modular switchgear in accordance with EN 62208 (meter has a width of 3 modules) on 35 mm rail. The current is measured through current transformer (CT). Measured values are displayed on 4 -digit readout field. Switching between measured values is realized by pressing a button.
The N27P is a programmable digital device used to measure the parameters of single-phase electrical networks. The meter measures and calculates the following values:
phase voltage
10 minutes’ mean voltage
current
active power
reactive power
apparent power
active power factor
ratio of reactive/active power
mean active power
phase shift
input of active energy
output of active energy
input of reactive energy
output of reactive energy
apparent energy
frequency
10 seconds’ mean frequency
time
maximum and minimum values of:
– phase-to-neutral voltage;
– current;
– active power;
– reactive power;
– apparent power;
– active power factor;
– tangent φ;
– frequency;
– average active power;
It is possible to enter transformer ratio of used external current or voltage transformers which will be accounted for in the measurement and calculation of all values. All values and configuration
parameters are accessible through the RS485 and USB interfaces.The meter output signals are galvanically isolated from the input and power supply signals.
The N30H meter is a programmable digital panel meter destined for the measurement of d.c. voltage or d.c. current. Additionally, the meter enables the indication of the current time. The readout field is a LED display, which allows the exposition of results in colours: red, green and orange. The measured input signal can be arbitrary converted by means of a 21-point individual characteristic.
Features of the N30H meter:
l display colour individually programmed in three intervals,
l programmable thresholds of displayed overflows,
l 2 NOC relay alarms operating in 6 modes,
l 2 switched relay alarms with a switching contact operating in 6 modes (option),
l signaling of the measuring range overflow,
l automatic setting of the decimal point,
l programming of alarm and analog outputs with the reaction on the chosen input quantity (main or auxiliary input),
l real-time clock with the function of the clock supply support in case of the meter supply decay,
l programmed averaging time – function of walking window with the averaging time up to 1 hour,
l monitoring of set parameter values,
l interlocking of introduced parameters by means of a password,
l recount of the measured quantity on the base of a 21-point individual characteristic,
l service of the interface with MODBUS protocol in the RTU mode (option),
l conversion of the measured value into a standard – programmable current or voltage signal (option),
l highlight of any measuring unit acc. to the order.
l signaling of alarm operation – switching the alarm on causes the highlight of the output number,
l galvanic separation between connectors: alarm, supply, input, analog output connections and RS-485 interface.
Protection degree from frontal side: IP65
Meter overall dimensions: 96 x 48 x 93 mm (with terminals).
The meter casing is made of plastics.
The ND10 meter is a digital programmable panel meter destined for the measurement of the 3-phase, 4-wire power network parameters in balanced and unbalanced systems. It is also capable of displaying measured quantities and their simultaneous digital transmission. The meter is also capable of controlling and optimization of the power electronic devices, systems, and industrial installations. The meter can be used for measuring: RMS value of voltage and current; active, reactive and apparent power; active and reactive energy, power parameters; frequency, 15-, 30- and 60-minute mean active power and THD. Additionally, a current in the neutral wire is calculated from the phase current vectors . Voltage and current values are multiplied by given voltage and current ratios of measuring transformers. Power and energy indications take into account all programmed ratio values. Any and all measured values can be sent to the master via the RS-485 interface. The relay outputs signal alarm when selected parameters exceed set limits. Impulse output can be used for consumption check of the 3‑phase real energy. This meter is also able to detect and signal incorrect phase sequence. The meter is powered by the measuring circuit, i.e. from the voltage output.
There is a galvanic separation between following units of the meter:
– voltage and current inputs,
– RS-485 output,
– impulse output.
The N20D meter is a digital programmable panel meter destined 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 meter 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, archive of power profile, THD and harmonic measurements. 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 additionally a continuous current output.
The meter has a galvanic separation between respective blocks:
– supply,
– measuring inputs,
– voltage and current inputs,
– analog output,
– RS-485 output,
– impulse output.
The ND20LITE meter is a digital programmable panel meter destined 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 meter 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. 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,
– measuring inputs,
– voltage and current inputs,
– RS-485 output,
– impulse output.
The ND30 meter is a programmable digital instrument designed for the measurement of 1-phase 2- wire and 3-phase 3 and 4-wire power network parameters in balanced or unbalanced systems. The measured values are displayed on a 3,5’’ TFT full-color screen, resolution: 320 x 240 pixel. The meter enables control and optimization of the power electronic devices, systems and industrial installations. The meter provides measurement of: RMS of voltage and current, active, reactive and apparent power, active, reactive and apparent energy, power factors, frequency, the harmonics of current and voltage /up to 51st/, THD of voltage and current, averaged active and apparent power P Demand, S Demand, averaged current I Demand /15, 30 or 60 minutes/. Voltages and currents are multiplied by given voltage and current ratios of the measuring transformers. Power and energy indications take into account all programmed ratio values. The value of each measured value can be transmitted to the master system via the RS-485 or Ethernet interface. Three relay outputs signal the overflow of the chosen value and the programmable analog output maps the assigned parameter. The temperature inputs can be used to control the temperature of the transformers windings, motors.
There is a galvanic separation between following units of the meter:
– supply
– voltage inputs
– current inputs
– RS485 interface
– Ethernet interface
– alarm outputs
– analog output
– temperature input Pt100
ND30PNET meter is a digital programmable instrument designed to measure network parameters of single-phase 2-wire and three-phase 3 and 4-wire balanced and unbalanced systems. The measured values are displayed on a color graphic screen TFT 3.5” with a resolution of 320 x 240 pixels. The meter enables the control and optimization of power electronic devices, systems and industrial installations. It provides measurement of: RMS voltage and current, active, reactive and apparent power, active, reactive and apparent energy, power factor, frequency, harmonic currents and voltages /up to 51st/, THD of current and voltage, average active and apparent power, P Demand, S Demand, averaged current I Demand /15, 30 or 60 minutes/. Voltages and currents are multiplied by given current and voltage transformer ratios of measuring transformers. Indications of power and energy include the values of programmed ratios. The values of the measured quantities can be transmitted to the host system through RS485 interface or Ethernet / Profinet interface, relay outputs signal overruns of the selected parameters, programmable analog output maps the assigned parameter. Temperature inputs can be used to control the temperature of the windings of
transformers, motors.
The meter has a galvanic separation between the individual blocks of:
– power supply,
– voltage inputs,
– current inputs,
– RS485 Interface,
– Ethernet/Profinet interface,
– alarm outputs,
– analog output,
– Pt100 sensor input.
The N100 meter is a programmable digital instrument designed for the measurement of 3-phase, 3 and 4-wire power network parameters in balanced or unbalanced systems. The measured values are displayed on a two-color LED display. The meter enables control and optimization of the power electronic devices, systems and industrial installations. The meter provides measurement of: RMS of voltage and current, active, reactive and apparent power, active, reactive and apparent energy, power factors, frequency, the harmonics of current and voltage /up to 51st/, THD of voltage and current, averaged active and apparent power P Demand, S Demand, averaged current I Demand /15, 30 or 60 minutes/. Voltages and currents are multiplied by given voltage and current ratios of the measuring transformers. Power and energy indications take into account all programmed ratio values. The value of each measured value can be transmitted to the master system via the RS-485 or Ethernet interface. Three relay outputs signal the overflow of the chosen value, and the pulse output can be used for the consumption check of 3-phase active energy. The programmable analog outputs map the assigned parameter. The pulse input can be used to check the counters with the pulse outputs.
There is a galvanic separation between following units of the meter:
–– supply
–– voltage inputs
–– current inputs
–– RS485 interface
–– Ethernet interface
–– pulse input
–– pulse output OC
–– alarm outputs
–– analog outputs
The N43 meter,assembled on a rail, is a programmable digital instrument designed for the measurement of 3-phase, 3 or 4-wire power network parameters in balanced or unbalanced systems. The measured values are displayed on a dedicated LCD display. The meter enables control and optimization of the power electronic devices, systems and industrial installations. The meter can be used for measuring: RMS of voltage and current, active, reactive and apparent power, active and reactive energy, power factors, frequency,THD and averaged values P Demand – “power guard”, S Demand, I Demand /15, 30 or 60 minutes/. Voltages and currents are multiplied by given voltage and current ratios of the measuring transformers /for indirect
connections/. Power and energy indications take into account all programmed ratio values. The value of each measured value can be transmitted to the master system via the RS-485 interface. Three relay outputs signal the overfl ow of the chosen quantity, and the pulse output can be used for the consumption check of 3-phase active energy.
There is a galvanic separation between following units of the meter:
– supply,
– voltage and current inputs,
– RS-485,
– USB,
– pulse output OC,
– alarm outputs.
The N14 meter is a programmable digital panel instrument destined for the measurement of 3-phase, 3 or 4-wire power network parameters, in balanced or unbalanced systems with the simultaneous display of measured quantities and digital transmission of their values. This network parameter meter enables the control and optimization of power electronic devices, systems and industrial installations. The N14 meter ensures the measurement of: RMS voltage and current, active, reactive and apparent power, active and reactive energy, power factors, frequency, mean active power (e.g. 15-min mean power). Voltages and currents are multiplied by given current and voltage ratios of measuring transformers. Indications of power and energy take into consideration programmed ratio values. The value of each measured quantity can be transmitted to the master system through the RS-485 interface. The relay output signals the exceeding of the chosen quantity and the impulse output can be used for the consumption control of the 3-phase active energy. The meter has a detection and signaling of incorrect phase sequence. The meter is fixed to the panel by means of screw holders.
The ND1 Power Quality Analyzer is destined for the measurement and analysis of 3-phase, 3 or 4-wire power network parameters, in balanced or unbalanced systems.