3-Phase Class A Power Quality Analyzer

The innovative design of the BLACKBOX device series is a technological breakthrough providing the perfect PQ Analysis solution.

Class A

Elspec’s pioneering measurement method utilizes a dual-range gain of 2 x 16 Bit to yield, a superior accuracy far surpassing IEC 61000-4-30 Class A requirements, thereby capturing the finest details & deviations in Power Quality parameters.

Real-Time Monitoring

Continuous waveform recording, Trigger free setup, 5,000 power parameters @ 1/2 cycle resolution, Easy deployment.

Synchronized Monitoring

A unique time synchronization algorithm assures that logged data from multiple units is synchronized & displayed on the same time scale with typical 0.1 ms resolution. Every event on a grid is accurately analyzed for precise root cause analysis, behavior propagation, and traced to its source.

Superior Accuracy

Elspec’s pioneering measurement method utilizes a dual-range gain of 2 x 16 Bit to yield, a superior accuracy far surpassing IEC 61000-4-30 Class A requirements, thereby capturing the finest details & deviations in Power Quality parameters.

Utilities (Transmission, distribution, generation)

  • Optimizes protective equipment configuration and substation automation solutions
  • Ensures a reliable and consistent supply of energy
  • Evaluates the performance of breakers and relays
  • Identifies and manage peak demand
  • Real time power quality monitoring to meet any international standard
  • Produces detailed & comprehensive statistical records

Energy Consumer (Critical power, industrial, commercial, etc.)

  • Measures and analyzes system efficiency, provides solutions and increases profits
  • Negotiates capabilities with power providers
  • Detects electric bill inconsistencies
  • Avoids power quality compliance issues
  • Monitors and analyses power quality in real time

Continuous Waveform Recordings

  • The G4400 fixed power quality analyzer is able to record and store all electrical waveform continuously for more than a year, with no gaps in the data. The G4400 fixed power quality analyzer offers a clear and comprehensive picture of the conditions before, during, and after an event.

Supreme Trends Resolution

The G4400 power quality analyzer measures and records 5,000 power parameters continuously at a resolution of ½ cycles, 10/12 cycles, 150/180 cycles, 10 min and 2 hours of which, any given resolution is calculated for display and reporting purposes. Hence, there is no need to select which parameters to log, and more importantly, which parameters to ignore.


Harmonics & Inter-Harmonics Analysis

The G4400 power quality analyzer has two FFT engines for harmonics analysis: Cycle by Cycle: performs FFT at 1 cycle resolution for extended bandwidth. This engine provides 512 harmonics order at 50Hz resolution. 10/12 Cycles: performs FFT 10/12 cycles resolution for extended resolution and sub-grouping calculation. This engine provides the magnitude and angle of 512 spectrum components at 5Hz resolution.

Comprehensive Event Mechanism

The G4400 power quality analyzers series is designed to detect any event occurring on your system. The mechanism allows you to configure events on any measured parameter (more than 1,000) and/or I/O ports. The event mechanism supports out-of-limit events as well as rate of changed limits. The G4400 analyzer is capable of recording waveform signals continuously. The event configuration doesn’t trigger the recording but rather stores summary logs including start and end time, duration, severity and magnitude of the event. All events can be displayed in a tabular or scatter charts as CBEME/ITIC.

Optional Accessories

Multi I/O extension to comply with every application

The G4400 series offers the option to expend the meter capability by adding the multi I/O module in conjunction with all metering functionalities. The I/O module includes analog and digital I/O as well as a relay output to specifically work with your application.The multi I/O module extends the meter capability in order to replace RTUs and PLCs for energy management and substation automation. With the G4400 series you can monitor the reliability of system apparatus such as transformers, circuit breakers and other critical equipments. The G4400 series supports up to 2 I/O modules using internal power along with:a 8 fast digital input at 16sample/seca 4 fast digital output at 16 sample/seca 4 analog 4-20mA input sampled at 1Hz with programmable scalinga 4 analog 4-20mA outputa 3 Relays

Real Time Local & Remote Monitoring

The G4400 series is accessible locally or remotely, using either an integral web server interface or the Elspec G4100 remote display. The Elspec G4100 represents the next generation in power network information exchange.By using IP based communication, various unprecedented setup configurations are enabled over a great distance. Using ethernet infrastructure, the G4100 can monitor multiple G4400 meters connected to the network remotely or connected to each analyzer directly. The G4100’s display provides full control over all meters allowing technicians and field operators to fully configure and operate each single meter in the network. The G4100 can be powered by external power supply or through the G4400 embedded PoE port.


The GPS provides an optimal mobile time synchronization solution for accurate time data via satellite signal. In absence of any other available technologies, it synchronizes the time at any remote location.


Product Series




Voltage Sampling Rate, Maximum Samples/Cycle2565121,024
Voltage Harmonics (Individual, Even, Odd, Total) Up to –127TH255th511th
Type of Analog to Digital Converter16/201 bit16/201 bit16/201 bit
Internal Memory128 MB4 GB16 GB
Transient Detection, Microseconds (50Hz/60Hz)78.1/65.1μs39/32.5μs19.5/16.3μs
Ethernet Ports122
Power Over Ethernet (PoE- Out)11
Voltage Ride Through on Power Loss (up to)10 sec.25 sec.25 sec.
Applicable Measurement StandardsEN50160, IEEE1159, IEEE519, IEC61000-4-15,IEC61000-4-7, IEC61000-4-30 Class A,IEC62053-22/23 Class 0.2
Applicable EMC StandardsEN55011 Group 1 Class A, EN61000-6-2, IEC60255EN60439-1 (clauses 7.9.1, 7.9.3, 7.9.4, 7.10.3, 7.10.4),FCC Part 15 Subpart B Class A, IEC61000-3-3

Voltage Channels

Channels3 Phase + Neutral
Nominal Full Scale1,000V
Maximum Peak Measurement8kV
Input Impedance3MΩ
Uncertainty0.1% of Nominal

Current Channels

Channels3 Phase + Neutral
Nominal Full Scale5A
Maximum Peak Measurement50A
Phase±0.42°@3A ±0.17°@5A
Uncertainty0.1% of Nominal

Frequency Measurement

Fundamental Frequency42.5 Hz to 69 Hz
Frequency Resolution10 mHz
Frequency Accuracy±10 mHz


Dimensions175mm x 232mm x138mm

Power Supply

Operating Range100-260 VAC: 50/60 Hz 100-300 VDC
Auxiliary DC Supply48 VDC
Auxiliary Supply – PoE InPoE In According to 802.3af

Time Synchronization

Real Time Clock20ppm
IRIG B100-200μs
SNTP Server50-100μs

Environmental Conditions

Operation Temperature -20°C to 70°C(-4°F to 158°F)
Storage Temperature-40°C to 85°C(-40°F to 185°F)