Lumel NP45 User Manual
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Lumel NP45 User Manual

Power network analyzer / recorder
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POWER NETWORK ANALYZER /
RECORDER
NP45
USER'S MANUAL

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  • Page 1 POWER NETWORK ANALYZER / RECORDER NP45 USER’S MANUAL...

  • Page 2: Introduction

    NP45-09 User’s Guide Introduction Power quality analyzer adopts DSP＋ARM dual processor hardware platform and embedded operation system (uClinux), which can calculate a large number of electrical parameters and process all data quickly. The device offers extensive and powerful measurements functions to check power distribution system, so it can detect quality of power grid and electrical characteristics rapidly and conveniently.

  • Page 3: The Analyzer And Its Accessories

    Power Quality Analyzer User’s Guide The Analyzer and its accessories  Power Quality Analyzer  CD (PC software + manual)  Voltage Test Leads Alligator Clips   Power adapter  Power cord  Soft Carry Bag  Hang strap Options AC Current Transformer ...

  • Page 4: General Safety Information

    NP45-09 User’s Guide General Safety Information The Analyzer is designed and produced according to IEC61010-1 strictly, and complies with CAT III 1000V, CAT IV 600V and pollution degree II. Learn about below safety precautions to avoid personal injury, and damage to the Analyzer or any other products connected to it.
  • Page 5 Power Quality Analyzer User’s Guide approved rubber gloves, facial protection and flame-retardant clothing must be used to prevent electric shock and arc discharge damage.  Pay special attention when connecting or removing flexible current probes: power down the device being tested or put on suitable protection suit. ...

  • Page 6: Table Of Contents

    NP45-09 User’s Guide Introduction ......................... 1 The Analyzer and its accessories ................2 Options ......................... 2 General Safety Information ..................3 Chapter 1 Getting started ................... 7 Overview of The Analyzer ..................7 1.2 instruction of key function ..................8 1.3 Input Connections....................
  • Page 7 Power Quality Analyzer User’s Guide 4.1 Warranty ....................... 45 Chapter 5 Specifications ..................46 5.1 Frequency Measurement ..................46 5.2 Voltage Input ......................46 5.3 Current Input ......................46 5.4 Sampling System....................46 5.5 Measuring Modes and Parameters ..............46 5.6 Measurement Range, Resolution, Accuracy ............

  • Page 8: Chapter 1 Getting Started

    NP45-09 User’s Guide Chapter 1 Getting started User could learn the basic operation of the device through this chapter. Overview of the Analyzer 1: display area 6: GND input terminal 2: keyboard area 7: power adapter interface 3: charge indicator...

  • Page 9: Instruction Of Key Function

    Power Quality Analyzer User’s Guide 1.2 Function Description of Keys 1. Power on/ off function. 2. Mandatory power off: in power on status, press this key for about 10 seconds, the Analyzer will be forced to power off. Brightness adjustment: Press this button repeatedly to adjust the lightness of the screen.

  • Page 10: Input Connections

    NP45-09 User’s Guide charging indicator color changing from red to green, it reminds user the battery is fully charged. The Analyzer automatically cuts off charging when the battery is fully charged. Before use, check that the adapter voltage and frequency range match the local line power range.

  • Page 11: Rapid Overview Of Measuring Modes

    Power Quality Analyzer User’s Guide L2/B and L3/C. For correct measuring results, always connect the Ground input. For single phase measurements, please use current input terminal L1/A, GND, N and voltage inputs terminal L1/A. Voltage phase L1/A is the reference phase for all measurement.

  • Page 12: Screen And Function Keys

    NP45-09 User’s Guide 1.5 Screen and Function Keys The Analyzer has different screen types to present measuring results.  Table screen Table screen gives an instantaneous overview of important numerical measuring values under Volts/Amps/Hertz mode. Screen information: The screen header shows current measurement mode, some information will display in scroll.
  • Page 13 Power Quality Analyzer User’s Guide and value, which depends on measurement mode, phase number and wiring configuration. Function option lies in the bottom of the screen, corresponding to 【F1】~ 【F5】key. Function keys instruction: 【F4】: Open Trend screen. 【F5】: Switch between RUN and HOLD. ...

  • Page 14: Chapter 2 Basic Operations

    NP45-09 User’s Guide Chapter 2 Basic Operations 2.1 Tilt Stand and Hang Strap The tilt stand allows user to view the screen at an angle when place device on a flat surface. A hang strap is supplied with the Analyzer as below picture show: 2.2 Power on/off...
  • Page 15 Power Quality Analyzer User’s Guide Place the update files under the root directory of U disk, then insert to the Analyzer. After the U-disk is recognized by device, enter into user configuration interface from main menu, press 【F1】to enter into update interface. There are tree types of update file including Software, Firmware and System.

  • Page 16: Input Connections

    NP45-09 User’s Guide 2.5 Input Connections Check that the Analyzer setup meets the characteristics of the system under test. This concerns: wiring configuration, nominal frequency, nominal voltage, current clamp ratio and range. The Analyzer has 4 BNC inputs for current clamps and 5 banana-inputs for voltages.

  • Page 17: Set Up The Analyzer

    Power Quality Analyzer User’s Guide  Phase colors Press 【F2】to set phase color according to local country standard for phase color definition. Different phase, different color, to represent measurement value of each phase. The default phase color settings of L1/A, L2/B, L3/C, N and GND separately are yellow, green, red, blue and green.

  • Page 18: Using Memory And Pc

    NP45-09 User’s Guide The settings are grouped in four functional sections which are explained respectively as below: 【F1】: set wiring configuration. 【F2】: set nominal frequency. 【F3】: set nominal voltage. 【F4】: set clamp type. 【F5】: to set monitor limit value: recall, save and define the limit value required in monitoring the power quality.
  • Page 19 Power Quality Analyzer User’s Guide Use 【▲】【▼】keys to select the type of the saved files. Use 【ENTER】key to enter into edit interface to edit the file name. Press 【F5 】to complete the saving, and return to the original interface.  MEMORY interface The MEMORY button accesses to the save list interface, which shows the save time, name and type of saved files.
  • Page 20 NP45-09 User’s Guide Function keys instruction: 【F2】:Copy file to U disk after inserting a U disk and the characters of the key become lighted. 【F3】: View selected saved file. 【F4】: Delete selected saved file. 【F5】: Return to previous interface. ...
  • Page 21 Power Quality Analyzer User’s Guide Connect the Analyzer with PC by one piece of net cable, set IP address of Analyzer and PC to different, but should be in the same network segment. For example: IP address in PC is 192.168.1.XXX, while IP address in the Analyzer also should be 192.168.1.XXX accordingly.
  • Page 22 NP45-09 User’s Guide 【F1】: Open/close wireless network. 【F2】: Access to the selected wireless network 【F5】: Exit wireless network settings Open wireless network and select the wireless router that needs to be connected, it reminds user a successful connect if the assigned IP address display in the right of display.

  • Page 23: Chapter 3 Function Introduction

    Power Quality Analyzer User’s Guide Chapter 3 Function Introduction 3.1 Scope Scope mode shows voltages and currents in the power system under test by means of waveforms. Also numerical values are shown such as phase voltages, phase currents and frequency etc. The Scope waveform screen offers an oscilloscope style of display of voltage and current waveforms with a fast update rate.

  • Page 24: Voltage/Current/Frequency

    NP45-09 User’s Guide 3.2 Voltage/Current/Frequency This function is used for measuring steady voltage, current, frequency and crest factors. The Crest Factor (CF) indicates the amount of distortion; a CF of 1.41 means no distortion and higher than 1.8 means high distortion. Use this screen to get a first impression of power system performance before examining the system in detail with other measuring modes.

  • Page 25: Dips And Swells

    Power Quality Analyzer User’s Guide  Trend The trend records the data measured in the latest ten minute, then the curve formed from the right side. Reading in the header is correspond to the latest values formed in the right side. Function keys instruction: 【F1】: Switch parameters that the current Trend screen displays, the header shows content being displayed.
  • Page 26 NP45-09 User’s Guide Fig.3-3-1 Characteristics of a voltage dip Fig. 3-3-2 Characteristics of a voltage swell During an Interruption the voltage sinks well below its nominal value. In 3-phase systems, an Interruption begins when the voltages on all phases are below threshold and ends when one phase is equal to or above the interruption threshold plus hysteresis.
  • Page 27 Power Quality Analyzer User’s Guide Rapid voltage changes are quick transitions of the RMS voltage between two steady- states. Rapid voltage changes are captured based on steady voltage tolerance, steady time, minimum compensation and minimum rate detected. When voltage change exceeds dip or swell threshold, it is considered as Dip or Swell instead of Rapid Voltage Change.
  • Page 28 NP45-09 User’s Guide  Trend Both voltage and current are recorded to help user to observe causation of causing deviation. Function keys instruction: 【 F1 】 : Switch between voltage and current trends, the header shows parameters being displayed. 【F2】：Access to Events tables 【F3】：Open /close cursor, remove cursor by 【◄】【►】key after cursor is...

  • Page 29: Harmonics

    Power Quality Analyzer User’s Guide  Events tables The Events table lists all the limits of phase voltages. Thresholds according to international standards or user –definable thresholds can be used. The Events table records major event characteristics: start time, duration, voltage magnitude, event type, and occurrence phase etc.
  • Page 30 NP45-09 User’s Guide  Bar Graph Screen The Bar Graph display shows the percentage contribution of each of the components related to the fundamental or full signal. A signal without distortion should show a 1 harmonic at 100% while the others are at 0: in practice this will not occur because there always is a certain amount of harmonics resulting in distortion.

  • Page 31: Power And Energy

    Power Quality Analyzer User’s Guide  Table Screen The table screen lists all the harmonic parameters, including Harmonic Voltage, Harmonic Current, Interharmonic Voltage and Interharmonic Current. Select next page with up/down keys. Function keys instruction: 【F3】: select %f or %r to display harmonic. 【F4】: Return to bar graph of harmonic 【F5】: Switch between RUN and HOLD.
  • Page 32 NP45-09 User’s Guide  Table screen Parameters instruction: P (kW): active power. S (kVA): apparent power, multiply voltage RMS by current RMS. Q1 (kvar): reactive power of fundamental waveform. PF: power factor, divide active power by apparent power. cosФ: displacement power factor, the cosine value of angle between fundamental voltage and current.

  • Page 33: Flicker

    Power Quality Analyzer User’s Guide  Power & Energy screen Parameters instruction: kWh: active energy kVAh: apparent energy kvar：reactive energy Function keys instruction: 【F2】: the number shown on the display will be reset to 0 【F3】:Close power table screen. 【F4】: Open the Trend. 【F5】: Switch between RUN and HOLD.

  • Page 34: Unbalance

    NP45-09 User’s Guide  Table Function keys instruction: 【F4】: To open PF5 Trend screen 【F5】: Switch between RUN and HOLD Parameters instruction: Pinst：Instantaneous flicker Pst： Short-term flicker severity (measured in ten minutes). Plt： Long-term flicker severity (measured in two hours).
  • Page 35 Power Quality Analyzer User’s Guide  Table Function keys instruction: 【F4】: Open Phasor screen. 【F5】: Switch between RUN and HOLD. Parameters instruction: Uneg: Negative sequence voltage unbalance Ineg： Negative sequence current unbalance Uzero: Zero-sequence voltage unbalance Izero: Zero-sequence current unbalance Ufund：...

  • Page 36: Transients

    NP45-09 User’s Guide  Phasor Shows the phase relation between voltages and currents in a vector diagram divided in 30 degree sections. The vector of the reference voltage L1/A points to the horizontal direction. Additional numerical values are given: negative voltage and...

  • Page 37: Inrush Currents

    Power Quality Analyzer User’s Guide  Waveform display Function keys instruction: 【F1】: Playback captured Transients waveforms. 【F2】: Let waveform adapt to the size of screen automatically 【F3】: Open/ close cursor 【F4】: Open/ close Zoom function 【F5】: Switch between RUN and HOLD The following figure shows the captured transient events: 3.9 Inrush currents Inrush currents can be captured by the Analyzer.
  • Page 38 NP45-09 User’s Guide example the start-up current in induction motors can be ten times the normal working current. Inrush is a ‘single shot’ mode that records current and voltage Trends after a current event has occurred. An Inrush occurs when the current waveform exceeds adjustable limits.

  • Page 39: Wave Record

    Power Quality Analyzer User’s Guide  Events list 3.10 Wave Record The waveform of voltage and current could be recorded through this function, the sample rate is up to 20k and the duration time is settable. The parameters in below screen shown could be set.
  • Page 40 NP45-09 User’s Guide Press 【MENU】key, use direction key to select logger function, press 【ENTER】 key to enter into logger setting interface. Here user can check remaining storage space, choose the needed logger parameters, set record interval, duration time and name of stored file. Then press 【F5】to start.

  • Page 41: Monitor

    Power Quality Analyzer User’s Guide  Table Screen The table screen displays all the real time measurement data as selected parameters. With left/right key to refer to next page for view of the data. Function keys instruction 【F4】: Save recording data 【F5】: To stop logger 3.12 Monitor Note: Monitor function is not applied to 400Hz power system measurement.
  • Page 42 NP45-09 User’s Guide nominal value of 220V with a tolerance of ±15% (tolerance range between 187 … 253V). The momentary RMS voltage is constantly monitored by the Analyzer, it calculates an average from these measuring values across 10 minutes observation periods, and these averages are compared against the tolerance range.
  • Page 43 Power Quality Analyzer User’s Guide  Power Quality Monitor Screen Power Quality Monitoring is reached via the 【MONITOR】 key, and Immediate or Timed start is settable. With the direction keys you can position the Cursor on a particular Bar Graph. Measuring data belonging to the bar is shown in the screen header.
  • Page 44 NP45-09 User’s Guide  Events table The events table shows the events that occurred during the measurement with time of start, phase and duration. Events recording situation:  V rms events: an event is recorded each time that a 10 minute aggregated RMS value violates its limits.
  • Page 45 Power Quality Analyzer User’s Guide  Harmonics Bar Graph Screen The main system monitor display shows the worst harmonic for each of the three phases. Function key 【 F2 】 brings up a screen with Bar Graphs showing the percentage of time each phase spent within limits for 25 harmonics and Total Harmonic Distortion (THD).

  • Page 46: Chapter 4 Service And Support

    NP45-09 User’s Guide Chapter 4 Service and Support 4.1 Warranty We will give one year’s warranty to maintaining or replacing since consignment for the verified quality problem of the product.Except for this explanation and the description in the warranty card, the company has no other warranty, in proclamation or in implication.

  • Page 47: Chapter 5 Specifications

    Power Quality Analyzer User’s Guide Chapter 5 Specifications 5.1 Frequency Measurement Measurement Nominal frequency Resolution Accuracy range 50Hz 42.50~57.50 Hz 0.01Hz ±0.01Hz 60Hz 51.00~69.00 Hz 0.01Hz ±0.01Hz 400Hz 320~480Hz 0.01Hz ±0.01Hz Note: measured on Reference Voltage Input L1/A. 5.2 Voltage Input Numbers of input 4 (3 phase + neutral) continuous...

  • Page 48: Measurement Range, Resolution, Accuracy

    NP45-09 User’s Guide Dips&Swells Vrms1/2, Arms1/2, capture up to 1000 events, include date, time, duration, magnitude and phase mark, and threshold is settable. Harmonic 1-100, harmonic voltage, THD voltage, harmonic current, current, interharmonic voltage, interharmonic current Power and energy W、VA、var、PF、cosФ、tanФ、Vrms、 Arms、...
  • Page 49 Power Quality Analyzer User’s Guide Frequency 60Hz nominal 51~69 0.01Hz ±0.01Hz Frequency 400Hz nominal 320~480 0.01Hz ±0.01Hz Dips&Swells Measurement Resolution Accuracy range Vrms1/2 0~200% nominal 0.01Vrms ±0.2% voltage Arms1/2 According 0.01A ±1% current clamps Threshold value Threshold is settable according to nominal voltage percentage Detectable events type: Dips, Swells, Interruption, Voltage Rapid Change.
  • Page 50 NP45-09 User’s Guide (harmonics <1% nominal value) ±1% reading (harmonics >3% nominal value) 0.01A 0~6000A Absolute current ±0.05% reading (harmonics <3% nominal value) Power and energy Measurement Resolution Accuracy range P, S, Q1, Max6000MW 0.01kW ±1%±10 counts 0.01 ±0.1% cosФ...

  • Page 51: Wiring Combinations

    Power Quality Analyzer User’s Guide Arms According 0.01A ±1%±5 counts current clamps Inrush duration 1~32 min settable 10ms ±20ms time 5.7 Wiring Combinations 1P+NEUTRAL Single phase with neutral 1P Split Phase Split phase 1P IT NO NEUTRAL Single phase system with two phase voltages without neutral 3P WYE 3-phase 4-wire system, Y type 3P DELTA...
  • Page 52 NP45-09 User’s Guide Standard Measurement method IEC61000-4-30 A class Power quality monitoring EN50160 Flicker IEC61000-4-15 Harmonic IEC61000-4-7 Power measurement method IEEE1459 Environment Working 0°C~ 45°C temperature Storage -10°C~45°C temperature Humidity 90% relative humidity Safety Complied with IEC61010-1 Safety Degree: 600V CAT IV...

  • Page 53: The Specification Of Optional Current Clamps

    Power Quality Analyzer User’s Guide 5.9 The specification of optional current clamps Model Range Turns ratio Accuracy Size KLC8C-5A AC:5A 10mV/A 0.2% Φ8 CTC0080 AC:50A 10 mV/A 0.2% Φ8 CTC0130 AC:100A 1 mV/A 0.2% Φ13 CTC1535 AC:1000A 1 mV/A 1.0% Φ52 ETCR035AD AC/DC: 1000A 1 mV/A...

  • Page 54: Chapter 6 Ordering Code

    NP45-09 User’s Guide Chapter 6 Ordering code...
  • Page 55 Power Quality Analyzer User’s Guide LUMEL S.A. ul. Sulechowska 1, 65-022 Zielona Góra, Poland tel.: +48 68 45 75 100, fax +48 68 45 75 508 www.lumel.com.pl Export department: tel.: (+48 68) 45 75 139, 45 75 233, 45 75 321, 45 75 386 fax.: (+48 68) 32 54 091...

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