System parameters

• Nominal voltage (U) 400 V
• System highest voltage (Um) 400 V
• System frequency50 Hz
• Number of phases Three Phase
• Effectively earthed Method of earthing
• System fault level 25 kA

Service Conditions

• Annual average ambient temperature 30 0C
• Maximum ambient temperature 40 ⁰C
• Minimum ambient temperature 6 ⁰C
• Maximum relative humidity 900 %
• Environmental conditions Humid tropical climate
• Operational altitude 116 meters below sea level up to 4620 meters above sea level.

Applicable Standards

• The equipment and components supplied shall conform to the latest edition of the standard specified below and amendments thereof.
• IEC 61000-4-30:2015: - Electromagnetic compatibility (EMC) - Part 4-30: Testing and measurement techniques - Power quality measurement methods
• E-C 61000-4-7:2009: -Electromagnetic compatibility (EMC) - Part 4-7: Testing and measurement techniques - General guide on harmonics and inter harmonics measurements and instrumentation, for power supply systems and equipment connected there to.
• IEC 61000-4-15:2010: - Electromagnetic compatibility (EMC) — Part 4-15: Testing and measurement techniques — Flicker meter — Functional and design and specifications.
• IEC 61010-1:2010: - Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 1: General requirements
• IEC 61326-1:2012: - Electrical equipment for measurement, control and laboratory use — EMC requirements — Part 1: General requirements

Basic Features Measuring Parameters: - The Power Quality Analyzer shall comply one of the standards to view power quality characteristics on real time basis and also store them over a period for retrieval and analysis using inbuilt facilities and for downloading with a computer for analysis. It shall have an intrinsically safe and of compact light weight design suitable for outdoor use (drip and dust proof), under service conditions mentioned in Conditions

• The Power Quality Analyzer shall be designed to conveniently analyse following parameters;
• simultaneous measurement of U, I, φU, φI, f and P
• instantaneous values U, I and P
• Voltage & current waveforms (AC and DC)
• Power Factor (c) Power & Energy
• Harmonics
• System unbalance
• Transients
• Voltage Sags, Swells
• Flicker
• Frequency
• Energy losses due to unbalance & Harmonic issues
• Time derivative, integral over time, FFT analysis, mean value, histogram, and modeling
• Display of up to 24 measured values on one display
• Display of all values for each channel
• Display of all values in tabular form
• Display of measured values in a diagram
• Display of a vector diagram

Storage Capacity: - It shall be provided inbuilt circuitry for storage of data from electricity distribution system over a period of at least 30 days and facility for downloading the data into a computer for analysis. Internal memory shall be non-volatile type with capacity not less than 32 GB. It shall be available removable memory storage capabilities (SD card slot accessible).

Battery: - Rechargeable battery (preferably Li-ion) shall be available to cover power outages at least up to 03 hours and readily available in local market.

Computer Software: - Software should be provided with the equipment to configure, download and analyze the data.  The software should be run on Microsoft Window platform and compatible with latest Microsoft Windows version 7, 8.1, and 10 or above

Input and Output Characteristics: - Three phase four wire system WYE

• Voltage Inputs: - Number of inputs 4(3 phase + neutral) — DC coupled
• Maximum input voltage 100 V
• Nominal voltage range O V to 1000 V

Current Inputs: -

• Number of inputs 4 (3phase + neutral) — DC coupled.
• Type Flexible probes current measuring clamps for AC and DC
• Range O.5A to 2000A DC and 6A -6000 A AC

Sampling System: -

• Resolution Minimum 16 bit analog to digital converter on 8 channels.
• Minimum sampling speed (for steady state) : 25 kHz on each channel simultaneously.
• Minimum sampling speed (for transients) : 200 kHz on each channel simultaneously (d).
• Nominal frequency 50 Hz
• Requirement PLI- Synchronization is required

1. Display Modes: -

• Waveform display (4 cycles of 4 waveforms on screen)
• Phasor diagram (to be displayed with waveform display)
• Meter readings (Provides tabulated view of all available readings)
• Trend graph
• Bar graph
• Event list

Communication with PC: -

• Analyzer shall be provided with a USB port with accessories to connect to a PC.
• Communication ability with a GPRS modem with necessary software and accessories shall be provided if specified in Price Schedule.

Accuracy and Range: - The analyzer shall be fully operational under following parameter ranges with specified accuracy.

Parameter                          Range                                                 Accuracy

Voltage                   0 V- 1000V  ±0.1% or less

Current              0.5 A - 2000A DC, 6A -6000 A AC ±0.5% or less

Frequency               46 Hz - 53 Hz  ±0.01 Hz or less

Power factor            0-1 ±0.1% or less

    Phase angle            -3600 to +00 ±0.1% or less

Analysis and Results: -

• Averaging time of the steady state parameters shall be configurable between 0.25 s to 2 hrs in data logging mode. In addition to the default parameter sets, customer selected parameter sets should be configurable. Customer should be able to configure threshold values for parameters.
• Following information/data shall be obtained from the analyzer for data analysis

Voltage/Current/Frequency: -

• Average RMS values, Maximum and Minimum Values, Capability to measure fundamental components of current and voltage
• Sags and Swells: - As specified in one of the chosen standards
• Harmonics: - Harmonic Voltages, Currents and Power: - All Measurable
• Power and Energy: - Active, Reactive, Apparent Power and Power Factor
• Unbalance: - Negative, Zero and Fundamental values and Phase angles
• Power Loss: - Due to unbalance and harmonics
• Transients: - Trigger on sags, swells, interruptions and current levels as specified one of the chosen standards

Quality Assurance: - The manufacturer shall possess ISO 9001:2023 or latest Quality Assurance Certification valid throughout the delivery period, for the manufacture of Power Quality Analyzers for the plant where manufacturing is being done.

Accessories to be supplied with the Instrument: -

• Hard carrying case for the transportation of instrument
• Soft carrying case
• Operator manual
• User guide for computer software
• Power adapter / Battery charger
• Standard batteries (3 hours or more)
• Complete set of test lead and alligator clip set
• Complete set of flexible current measuring clamps for AC and DC
• 8 GB SD card
• USB cable/cables

International plug adaptor set