Energy Explorer Man Eng
Energy Explorer Man Eng
General Index
4.6.5 CONTRAST ADJUSTMENT ...................................................... 4-53
4.6.6 SETUP PRINTER ........................................................................ 4-54
4.6.7 LANGUAGE SETUP ................................................................... 4-54
4.6.8 SYSTEM UPGRADE SETUP ....................................................... 4-55
General Index
General Index
Chapter 1
General Information
Index chapter 1
1.1 INTRODUCTION
This manual is intended to describe the technical and functional features of the Energy
Explorer Energy Analyser, besides providing interesting indications on the importance
of Energy Load.
Any names and trademarks mentioned in this document are an exclusive property of
the respective Companies.
Energy Explorer complies with the most recent Electrical standards (EN61000-4-30)
and, besides measuring all traditional electric magnitudes, can also analyse the con-
sumption of an installation and detect possible alarms; it is also devoted to the analysis
of inrush currents by examining the start-up phase of electric motors.
It is possible to carry out very detailed measuring campaigns and store them on a
COMPACT FLASH memory card.
The stored data can be later analysed on a Personal Computer using «PEStudio», the
data Remote analysis software.
Elcontrol Energy Net S.p.A. has designed and built this product making use of the
know-how acquired in 50 years of experience as market leader in power parameter
measurement and consumption optimisation.
Manufacturer:
Elcontrol Energy Net S.p.A.
Via Vizzano, 44
40037 Sasso Marconi - Loc. Pontecchio (BO) - Italy
CEI EN 61326/A1
Equipment for measurement, control and laboratory use – EMC requirements
Identical to IEC 61326-1/A1:1998-05 and EN 61326/A1:1998-06; EN 61326-1 Ec:1998-
09
CEI EN 61326/A2
Equipment for measurement, control and laboratory use – EMC requirements
Identical to IEC 61326-1/A2:2000-08 and EN 61326/A2:2001-05
CEI EN 61326/A3
Equipment for measurement, control and laboratory use – EMC requirements
Identical to IEC 61326:2002-02 (Annex E & F); IEC 61326/Ec1:2002-07 and EN 61326/
A3:2003-12
Every Energy Explorer is tested and calibrated in conformity with strict controls and
processes that guarantee it is without material defects and errors in craftsmanship,
ensured by application of the Quality Management System in compliance with the UNI
EN ISO 9001:2000 (Vision 2000) standard.
The period of warranty is 3 years on hardware parts of the analyser considered de-
fective and 1 year on the accessories (amperometric sensors, cables, memory, etc.)
and parts that may require replacement.
The warranty covering any operational problems of the software inside the analyser
(firmware) is not given unless otherwise communicated by the manufacturer.
The warranty is valid only for the first purchaser or for the end customer of an Au-
thorised Elcontrol Energy Net S.p.A. Dealer, and does not cover expendable or
perishable materials (e.g. batteries, plastics, etc.).
Neither does the warranty cover any product or accessory that, in the opinion of
the manufacturer, has been used improperly, or has been deliberately or accidentally
altered or damaged.
The warranty is therefore also forfeited in the case of damage to the instrument, acces-
sories, equipment, or systems, or injuries to people, deriving from incorrect electrical
connection, overvoltage, improper use, etc.
Elcontrol Energy Net S.p.A. declines all responsibility for direct, indirect, accidental
or consequent damages or losses (including the loss of data) caused by violations of
the warranty or by contractual or penal clauses, torts, claims, etc.
Elcontrol Energy Net S.p.A. warrants that the “PE Studio” CD-Rom included in
the supply will operate correctly for 30 days, and that it has been masterized on first-
rate, non-defective optical supports.
The manufacturer does not guarantee that said software is completely operationally
error-free, and that it is perfectly compatible with any PC.
Elcontrol Energy Net S.p.A. declines all responsibility for any damages caused
by product transport.
The defective product must always be returned directly to the manufacturer or au-
thorised importer/distributor of your country CARRIAGE FREE, subject to prior
authorisation of Elcontrol Energy Net S.p.A.
The Instruction Manual should be carefully stored and should be provided with the
equipment in any transfers of ownership it may undergo during its life cycle.
The hard copy manual should be kept away from humidity and heat.
No parts of the manual should be removed, changed or torn.
The contents of this Instruction Manual are to be considered susceptible to changes
since Elcontrol Energy Net S.p.A. reserves the right to modify the characteristics, fun-
ctionalities and screens of the instrument at any time and without prior notification.
The figures contained herein are therefore to be considered indicative, and may not
perfectly correspond with reality.
Chap. = Chapter
Sect. = Section
Tab. = Table
Fig. = Figure
Technical abbreviations
1.5.3 GLOSSARY
Operator or User:
Specialised technician having the skills required to use the Energy Explorer Energy
Analysers
System:
The item (electrical board, supply line, etc.) to be measured using Energy Explorer.
Instrument or equipment:
These terms may be used to refer to the Energy Explorer Energy Analysers.
Operative System:
Complete set of pages of the operator/Energy Explorer communication interface.
Page or Screen:
These terms are used to refer to each Display that may be shown on the Energy
Explorer screen.
Menu:
Set of system pages relating to a specific topic.
Key:
An element of the Energy Explorer alphanumerical keyboard which, when pressed,
enables access to the corresponding function.
Measuring campaign:
Data and/or event recording that can then be analysed (data logging).
Read the following general instructions to ensure proper instrument use and rou
maintenance:
• The instrument should only be powered by battery or using the external power
supply included in the supply kit, connected to a mains having the following cha-
racteristics:
• The batteries recharge automatically when the instrument is connected to the power
supply.
Time required for full recharge (with batteries fully low);
• 10 hours maximum (with instrument on)
• 20 hours maximum (with instrument off)
• When the system is battery-powered, this is shown in the status bar (see sect.
4.2.1).
• Every time the instrument is battery-powered, after 3 minutes from the last pressure
of any key, the system switches to POWER SAVING mode.
In this mode, the display backlight is switched off, thus allowing longer operating
life.
A special LED, located on the front side of the instrument, indicates that the instru-
ment is on (see sect. 3.2).
• When the instrument is battery-powered, and the voltage level of both battery packs
drops below the minimum threshold required for proper operation, the instrument
switches off automatically. Recharge the batteries.
• In the event of battery malfunctioning or reduced life, replace the ENTIRE battery
pack.
• Replace the battery pack with instrument off and without measurement connec-
tions.
• NEVER remove or insert the Compact Flash memory while the instrument is on.
2-2 2 - Safety
2 SAFETY
Energy Explorer is compliant with the IEC EN 61010-1 standard as 600V Cat. III
- Pollution rating 2.
The instrument must be used as indicated in this Instruction Manual.
Improper use of the analyser could compromise the instrument’s safety-characteri-
stics.
The symbol placed on some points of the instrument indicates that impor-
tant information about the devices close to the symbol is contained in the Instruc-
tion Manual.
WARNING
Elcontrol Energy Net S.p.A. declines all responsibility for direct or
indirect, accidental or consequent injuries suffered by the equipment,
user or third parties caused by improper use of the instrument.
2 - Safety 2-3
2.2 SIGNALS
The main prohibition, hazard and obligation symbols are summarised to this end.
Only part of the following symbols relates directly to the activity of the Energy Explo-
rer User.
The Operator and any Assistants there of shall make sure that the primary safety rules
(use of appropriate clothing, prohibition to smoke, etc.) are observed in the depart-
ments or areas where the activities are carried out.
PROHIBITION Signals
GENERAL prohibition
The presence of this symbol indicates the prohibition to touch,
tamper or change the adjusting devices, unless authorised in
advance by the Manufacturer.
Do not SMOKE
Smoking is forbidden in the areas with this symbol.
NO TRANSIT OF PEDESTRIANS
The transit of pedestrians is forbidden in the areas with this
symbol.
2-4 2 - Safety
HAZARD/WARNING Signals
WARNING: GENERAL HAZARD
This informs the involved personnel that the operation descri-
bed implies the risk of injuries, if not carried out in compliance
with the safety rules.
2 - Safety 2-5
OBLIGATION signals
GENERAL obligation
The presence of this symbol indicates the obligation to carry
out the operation/manoeuvre as described and in compliance
with the current safety regulations in order to prevent hazards
and/or injuries.
2-6 2 - Safety
Chapter 3
Preliminary Instructions
Index chapter 3
The instrument and the accessories included in the supply are contained in a semi-
rigid case which in turn is placed into second, shockproof and waterproof plastic case
(IP67).
All the components included in the case have been selected and tested.
If any malfunctions are found, please contact our Service Centre.
NOTE
The Instruction Manual further includes the Guarantee Certificate and the Certifica-
te of Conformity.
11
10 7
12
5
13 3
2
9
1 6
Fig. 1
4 8 14
The bottom-side of the instrument further includes the housings for the rechargeable
battery packs included in the supply.
IMPORTANT!
Before you turn on Energy Explorer for the first time, charge the batteries for
at least 4-5 consecutive hours with the instrument turned off, by connecting the
battery charger to outlet 5 and to the AC mains socket outlet.
(*) Options not used in the first version of Energy Explorer , but that can be
enabled later on by updating the internal software (see sect. 4.6.6 – System
Upgrading).
(**) Not included in this version of Energy Explorer.
1
2 9
5 10
4
3
12 13 14
6 7 8 Fig. 2
15 16
WARNING
Before connecting to the system, carefully read all the sections of this Instruction
Manual. Elcontrol Energy Net S.p.A. declines all responsibility for direct or indirect,
accidental or consequent injuries suffered by the equipment, user or third parties
caused by improper use of the instrument.
3.3.1 LOW VOLTAGE CONNECTION
Always follow the safety measures when connecting the instrument to the electric
system, i.e.:
There are 3 possible types of LV connection, described in the figures on the following
page:
As you can see in Fig. 5, the single-phase connection must be made using the L1 phase
inputs.
As the first operation, fasten the amperometric sensors around the phases.
IMPORTANT
The amperometric sensors supplied are marked not only by a coloured wire marker
clamp (that identifies its phase for matching with the relevant amperometric input
hub) and also by an arrow that indicates the correct current flow direction.
Afterwards, make the connections of the voltage cables, clamping the relevant alligator-
clip terminals on the phases and matching the cable colours with those of the voltage
input hubs on the back of the instrument.
Fig. 4
Fig. 5
In the case of medium voltage measurements, pick up the voltage of the three-phase
system (generally 3-wire) by two VT to be connected to the instrument, as shown in
Figure 6, always observing the matching of voltage and current inputs.
NOTE:
Connect the 3 output phases from the VT like a standard 3-wire connection (see Fig.
6).
Set the transformation ratios in the relevant setup (see sect. 4.5.1).
You also need to connect the CT to the instrument by an interface which converts the
current signal into a signal that can be read by the instrument inputs.
Such interface is called “SEPA/5” and it also provides galvanic separation.
It is recommended to connect one of the terminals of each CT to earth.
NOTE:
Set the use of clamps in the instrument setup and enter the appropriate transformation
ratios based on the CT used, remembering that the transformation ratio of the SEPA
interface (5A/1V) should be taken into account.
Fig. 6
To turn Energy Explorer on–only after you have made all of the electric system con-
nections as described on the foregoing sections– you have to keep the key pressed
for 4-5 seconds.
You will hear the buzzer beep, and the picture of the TUX penguin, the Linux symbol,
will appear on the screen.
At the same time you will see the boot routines of the Operating System scroll down,
In this way, it will be possible to check whether Energy Explorer configuration is ap-
propriate for the expected use.
NOTE:
After a long period of inactivity, the instrument may lose the date and time set due to
an insufficient battery charge. Upon turning on, a message will be displayed, informing
the operator of this condition. To set date and time, see sect. 4.6.1.
NOTE:
The buzzer will beep every time the pressing of one of the keys on the alphanumerical
keyboard is recognised. Therefore, based on the buzzer’s beeping, the operator can
understand whether any delays in the command response are due to software proces-
sing delays (e.g.: screen refresh) or to an insufficient pressure of the key.
The instructions for navigating and using the system are included in sect.
4 of this Manual.
3 - 10 3 - Preliminary instructions
Chapter 4
Operating Instructions
Index chapter 4
The instrument’s screen displays the measurements values as well as any information re-
quired for the navigation of the operative system.
In fact, the buttons in the MENU page match the position of the keyboard keys and therefore
indicate the key to be pressed to access the corresponding instrument function.
Once a menu is accessed, it will then be possible to explore it following the directions pro-
vided on the screen by a “help on line” system, which prompts the user how to move about
according to his/her needs.
The Joystick arrows normally let you scroll the pages or select the pushbuttons, checkbo-
xes, editboxes and listboxes (see sect. 4.1.1), whereas the ENTER key is used to enable
subfunctions (e.g. zoom), to “press” the selected buttons or checkboxes or to open editboxes
and listboxes.
Alphanumerical keys and the and , keys offer immediate access to the
relative menus from any page, except the setup pages, where these keys are obviously
used for entering values or names inside the relevant fields.
1 to 8 Measurement menus
9 Measuring campaign management menu
ALT and 0 Setup menus
For example, by pressing the button , you will access the harmonics measure-
ment menu, by pressing the button you will access the INSTRUMENT SETUP
pages, and so on.
The “arrows” enable the cyclical scrolling of all the pages in a menu.
Moreover, if any additional functions are provided within a specific menu or page, the
buttons to be pressed in order to execute the corresponding function are indicated
on the screen (ex.: by pressing the button in the “SCOPE” menu pages,
you can enlarge the various graphs).
NOTE:
By default, when entering any menu, Energy Explorer will display the first page of the
selected menu (e.g. 1.1, 2.1, 3.1, etc.), but afterwards will keep track of the last page
displayed before exiting each menu. Therefore, the next time the menu is accessed,
the page displayed will no longer be the default page, but the last page viewed by the
user.
In this way, the operator can alternatively consult different menu pages without having
to change position each time again with the “arrow” buttons.
This function is enabled as long as the instrument is turned on and is restored upon
the next start up.
Some buttons, checkboxes, editboxes and listboxes may appear on the various pages
(especially the SETUP pages).
The buttons are usually meant to be “pressed” so as to access other functions or
pages, whereas the checkboxes are used to select an option.
On the other hand, editboxes are editable text fields, whereas listboxes are boxes that
allow the selection of an item within a list of possible choices therein contained.
BUTTONS
A button is displayed as a relief box containing useful information for the operator.
There can be 2 types of buttons: “informative” and “selectable”.
“Informative” buttons contain a picture and/or a wording identifying its function and
the indication of the key to be pressed on the keyboard to execute the command they
are associated to (access to the various menus, return to the previous page, etc.).
The selection is made by the arrow keys (a red frame indicates the selected button)
When these circles or squares are filled with a black dot or an “X”, it means that the
checkbox is selected and that Energy Explorer is therefore using the corresponding
option.
NOTE:
The basic difference between the checkboxes with the circle and those with the square
is that the former require that only one of the possible options is chosen, whereas the
latter let you enable other options/choices at the same time.
As with the buttons, to select a CHECKBOX you need to use the “arrow” keys: a red
frame denotes their selection.
Press to enable/disable their function.
EDITBOXES
The function of these text fields is to allow numeric values to be set (e.g. amperometric
or voltage ratios, thresholds, sampling times, dates, etc.) or to enter names and notes
to be attributed to, for example, the measuring campaigns.
As in the previous cases, the editable field is selected by moving the red frame over
the desired box using the arrow keys.
Then, by pressing the button , the frame turns green and a cursor is displayed
inside the field.
In this condition, the alphanumerical keys have the function of writing numbers and/or
letters.
Press again to exit the editbox.
LISTBOXES
Listboxes are used when it is necessary to choose between a list of possible options
(ex.: nominal frequency selection, measuring campaign selection, etc.).
You can access these boxes adopting the same methods used for the Editboxes and,
once inside, it will be possible to move the cursor (blue field), using the vertical scroll
“arrow” keys.
The pages included in each menu are summarised and described in detail in the sec-
tions below.
• All the MEASUREMENT and CAMPAIGN MANAGEMENT PAGES have
their own progressive numbering (ex.: 1.1, 3.2 etc.), shown on the status bar (see
sect. 4.2.1).
NOTE:
In the screen flows illustrated hereinafter, empty screens (that is, those simply identified
by a white rectangle) will soon be implemented.
6.5- Inrush V e I - L3
4 - 10 4 - Operating Instructions
MEASUREMENT PAGES
4 - Operating Instructions 4 - 11
MEASUREMENT PAGES
4 - 12 4 - Operating Instructions
MEASUREMENT CAMPAIGNS MANAGEMENT
Campaign Configuration
Scheduling Campaign
4 - Operating Instructions 4 - 13
MEASUREMENT SETUP PAGES
Measurement Setup
4 - 14 4 - Operating Instructions
INSTRUMENT SETUP PAGES
Instrument Setup
Communication Interface
Date and Time Setup Compact Flash Setup Setup
Contrast Adjustment LCD Buzzer and Backlight Setup Touch Screen Setup
4 - Operating Instructions 4 - 15
SUMMARY OF THE SYSTEM'S MENU STRUCTURE
The diagram below summarises all the system pages with the relevant titles inside the
white rectangle. Grey rectangles indicate the pages that still need to be implemented
(N.A.). These pages cannot be accessed and the relevant access buttons are shown
in a grey shade.
5.1
Phasor
CAMPAIGN 9.1
MANAGE- Campagne
Setup
MENT
Voltage Current AUX
MEASUREMENT SE-
Help
connection
4 - 16 4 - Operating Instructions
4.2.1 STATUS BAR
The status bar is displayed at the top of ALL the system pages.
The following information is shown:
1 2 3 4 5 6 7 8 9 10
1 Date (DD/MM/YYYY)
2 Time (hour:minute)
3 Campaign recording in progress (if no campaign is in progress, the icon is not di-
splayed).
4 Type of amperometric sensor selected. The sensors can be one of no. 3 types:
- Flexible probe
- Clamp-on CT
TA - Current transformer
5 Type of connection selected. The connection can be one of 3 types:
- 3-wire connection (three-phase without neutral)
- 4-wire connection (three-phase with neutral)
- 2-wire connection (single-phase)
6 Page number or name.
7 Alarm in course
8 Type of power supply used:
- Mains power supply
- Battery power supply
9 Charge level of the left battery pack
10 Charge level of the right battery pack
The battery charge levels are displayed as follows:
- Battery fully charged.
- Battery with approximate charge below 70%.
- Battery with approximate charge below 50%.
- Battery with approximate charge below 30%.
- Battery with approximate charge below 15%.
- Battery down.
- Battery pack missing or damaged.
When the batteries are down or low, connect the power supply to Energy Explorer
to start the recharge. Such condition is indicated by a progressive filling sequence of
icons 9 and 10.
4 - Operating Instructions 4 - 17
4.3 MEASUREMENT PAGES
The screens called MEASUREMENT PAGES can be accessed starting from the MAIN
MENU by the buttons from to . These pages display data, graphs, wave-
forms resulting from the measurement made.
4 - 18 4 - Operating Instructions
The MEASUREMENT PAGES allow only the display of parameters and events de-
tected and are generically characterised by an area intended for waveforms,
electrical parameters, etc. (A), an area including any data summaries (B) and an
informative area for navigation (C).
As an example, the informative area for navigation on page 2.1 includes the following
indications for the operator:
WARNING:
the buttons described above may take different meanings in the various operative
system pages. In any case, a brief description of their specific function is always displayed
beside them.
4 - Operating Instructions 4 - 19
4.3.1 METER
RMS measurements of all basic electrical parameters, for each phase and for the three-
phase system, are displayed numerically and identified by the colour of the phase they
belong to:
Display pages 1.1, 1.2 and 1.3 show the instant values of electrical parameters related
to the measure being considered.
Pages 1.4, 1.5 and 1.6 show the electrical parameters related to the analysis period
(integration period) set in the setup page (see par. 4.5.5).
In the lower part of the window a moving red bar is generated showing the time passed
since the last update.
4 - 20 4 - Operating Instructions
Update of measures can be:
•Fixed: the update is carried out at fixed intervals equal to the integration time set
in the corresponding setup page.
•Sliding: the update is carried out at moveable intervals of 1 minute, considering the
previous average value relative to the integration time set in the setup page.
On page 1.7 the total energetic values since the apparatus has been switched on
are shown. On page 1.8 the last four interruptions are visualized with the starting
Date/Time and their corresponding duration. The cataloguing of all interruptions is
visualized in the lower part.
4 - Operating Instructions 4 - 21
4.3.2 SCOPE
The Scope (oscilloscope) function lets you view the waveforms of the currents and
voltages measured in REAL TIME, and at the same time read their RMS value on the
summary table. It is also possible to change the display of the signals by using the
zoom function.
The menu is made up of 7 pages that display the following parameters: the 3 phase-
to-phase voltages (2.1), the 3 phase-to-neutral voltages (2.2), the 3 currents (2.3),
phase 1 voltage and current (2.4), phase 2 voltage and current (2.5), phase 3 voltage
and current (2.6), and signal of the auxiliary channel (2.7).
Colours identify the displayed parameters in this menu as well (see sect. 3.3).
• red for voltage on L1, yellow for voltage on L2, light blue for voltage on L3 (the same
colours attributed to the relative hubs and respective voltage cables supplied);
• purple for the current on L1, green for the current on L2, blue for the current on
L3, white for the auxiliary signal (the same colours attributed to the relative hubs
and wire markers put on the cables of the respective current sensor wire markers
supplied).
If the potential difference between the input channels is less than 2 Volts, “No
signal” is displayed on the screen.
WARNING: the no signal message ONLY refers to the conductors directly con-
nected on the input terminals.
2.4 - Volt. and Curr. Phase 1 2.5 - Volt. and Curr. Phase 2 2.6 - Volt. and Curr. Phase 3
4 - 22 4 - Operating Instructions
4.3.3 HARMONICS
Harmonics are one of the most well-known power quality phenomena and are the
result of the distortion of the sinusoidal signal of the voltage and/or current.
Distorted waveforms can be broken down into a sum of components at the fundamental
frequency and at the frequencies multiple of the fundamental one.
Harmonics are signal components with frequencies that are integer multiples of the
fundamental operating frequency of the system.
The distortion of the sinusoidal waveforms, and hence the presence of harmonics, is
originated by the “non-linear” characteristics typical of several devices like inverters,
static energy converters, rectifiers, etc.
Harmonics are characterised by their amplitude and phase angle.
It is also common to use general indexes of the harmonic distortion, such as the THD
(Total Harmonic Distortion), a parameter that briefly quantifies the harmonic distor-
tion of a signal.
Energy Explorer is able to analyse the waveforms, calculate their harmonics up to the
32nd order in conformity with EN 61000-4-7, and display the result in the form of a
histogram (bar-graph), in which every bar represents a harmonic order. It is therefore
possible to analyse the voltage histogram, and at the same time the current histogram
for each of the 3 phases (3.1 for L1, 3.2 for L2, 3.3 for L3).
At the same time all numeric data regarding a single harmonic selected in the histogram
is displayed in the side-panel (absolute RMS value, percentage respective to the first
harmonic, THD% and displacement between the harmonic’s voltage and current).
As for the waveforms, the colours of the histograms and of the related numeric values
identify the phase being displayed (see sect. 3.3).
3.2 3.4
Phaser 2 Volt. I AUX
and Curr. Harmonics
Harmonics
Example:
The presence of harmonics in a network with capacitors causes a current overload on
the capacitor itself. Such overload, and the resulting temperature increase due to the
presence of harmonics reduce the capacitors’ life.
More in general, the problems that can be originated by the presence of harmonics
are:
4 - Operating Instructions 4 - 23
4.3.4 TARIFF BAND
Energy Explorer allows the user to set more than one customized tariff plan.
Tariff plans can have maximum four hour bands during the 24 hours with a 30 minute
definition.
4 - 24 4 - Operating Instructions
4.3 - Tariff Bands Couters
Page 4.3 presents Active, Reactive and Apparent
Power and costs for each hour band.
During the tariff plan setup phase, the user may
choose to relate the energy cost to the Active
power P[kwh]) or to the Apparent power(S
(kVAh)). In the table on this page, all energy infor-
mation related to costs is in red.
The data regarding the selected tariff plan is stored by the Energy Explorer at midni-
ght every day and at the switching off stage.
Data is stored in the compact flash, in a text file in the format described below:
If the tariff name is “elcontrol”, files are stored in the tariff_band/elcontrol/
directory
** Measurement Tariff **
11/02/2007 23:59 * Last_Reset 27/11/2006 10:22
NAME kWh kVAh Cost kvarh exc_kvarh pf_avg pico_P Date/Time
F1 871.7 944.6 871.733 297.4 -124.1 0.92 37497.5 02/01/2007_07:36
F2 9424.3 9810.6 18848.596 2136.7 -2335.9 0.96 37409.3 18/12/2006_12:19
F3 1175.3 1278.2 3525.848 408.1 -154.5 0.92 25485.3 18/12/2006_17:30
F4 2451.1 2875.4 9804.314 1405.72 20.1 0.85 8895.4 26/01/2007_05:45
4 - Operating Instructions 4 - 25
4.3.5 PHASOR
The three phases are alternating sinusoidal voltages having the same frequency and,
usually, the same amplitude, but with phase-angles displaced by 120 degrees from
each other.
The same frequency and therefore rotation speed of the vectors ensures the phase
displacement is constant.
Figure A
When the instrument is connected, you may check whether the cyclic voltage sequence
is correct (as per figure A).
If not, it will be necessary to change the connections on the instrument, making sure
that the matching between the voltage signal and the respective current signal main-
tained.
The connection of the amperometric probes must be made so that the direction of
the arrow in the vector graph coincides with the orientation of the current flowing
through the conductor.
4 - 26 4 - Operating Instructions
In the event of wrong connection of the amperometric probes, the current will be
displaced by 180° (see figure B).
Figure B
The unbalance value indicates the difference between an ideal three-phase system,
characterised by perfectly symmetrical voltages, and the three-phase system examined
(the higher the unbalance value, the greater the abovementioned difference).
In this case as well, the colours help identify the phases the vectors belong to and the
data in the table (see sect. 3.3).
4 - Operating Instructions 4 - 27
If an error in the phase sequence is detected (see figure C), 2 phases must be inver-
ted.
The vector of phase 1 (red arrow) must always be oriented upwards.
The vector of phase 2 (yellow arrow) must always be oriented rightwards.
The vector of phase 3 (light blue arrow) must always be oriented leftwards.
Figure C
FA
2 S E3
SE
FA
In this case, after powering the system off, it will be necessary to invert the cables
corresponding to the phases not properly displayed.
Energy Explorer should display the proper sequence of the phases shown in figure
A.
FASE 1
Figure A
OK
FA
3 SE2
SE
FA
4 - 28 4 - Operating Instructions
4.3.6 INRUSH CURRENT
Below the Inrush Current setup page is shown; you can access this page by clicking
, (but only from one of the pages in menu 6).
On the Setup page the user must set the current threshold value, the percentage value
of the hysteresis and select the input to be assigned to the Inrush current.
The inrush current starts when it exceeds the value set as threshold and it dies down
when the current drops below the threshold – the hysteresis. Typically, the “Inrush
current” threshold is 100% higher than the nominal current.
Energy Explorer analyses the Inrush current according to the measurement method
(performance class: Class A) defined by the 61000-4-30 standard and all curve points
correspond to the RMS value referred to a semiperiod (in a 50 Hz system the distance
between two points corresponds to 10 ms).
4 - Operating Instructions 4 - 29
The Inrush event is “photographed” and visualized on the screen until the operator
decides to reset it (by pressing the key).
On the display pages it is possible to carry out the vertical zoom of the wave form and
move inside the memorized buffer.
The numeric values visualized on each page represent the maximum peak and the
average RMS value within the analysis period of the inrush current.
As usual, wave form colours and numeric data help the user to identify the signal
visualized.
Below the display pages regarding voltage and current signals during the “Inrush”
phenomenon are represented.
4 - 30 4 - Operating Instructions
4.3.7 ALARM
Energy Explorer is equipped with the alarm function for the following electric magni-
tudes:
•Voltage (V),
•Current (I),
•Active Power (P [kW]),
•Reactive Power (Q [kvar]),
•Apparent Power (S [kVA]),
•Power Factor (PF),
•Harmonic distortion in voltage (THDU),
•Harmonic distortion in current (THDI).
Energy Explorer is also equipped with two solid state relay outputs with voltage free
contacts (24 VAC max, 100mA max) that can be associated with one or more alar-
ms.
4 - Operating Instructions 4 - 31
By means of this functionality a list of all the alarms that have occurred and of those
being monitored can be obtained.
On page 7.1 active alarms indicating the type of alarm and when it has been triggered
are shown.
On the following pages (7.2,7.3,7.4,7.5,7.6) the alarms that have occurred in phases
L1,L2,L3, Aux and in the three-phase value respectively are shown.
In the historic list of the alarms, there is the type of alarm, when it started (Day/
Hour), when it ended (Day/Hour) and the worst value of the measure during the
alarm period.
4 - 32 4 - Operating Instructions
Energy Explorer stores the “Log Files” in compact flash and they are present in the
“display_alarm/log” directory in a file structured as described below:
Depending on the alarm, the name of the Log File can be the following
list_string_L1.txt,list_string_L2.txt,list_string_L3.txt, list_string_LAUX.txt,list_string_
L3PHi.txt
The “file.txt” contains the historic log of all the alarms occurred.
Each line corresponds to the recording of an alarm occurred and contains the date, the
time of start and end, the worst signal value during the alarm and when it took place.
V_2 MIN 120 19/01/2007 08:06:17 19/01/2007 09:52:33 19/01/2007 08:06:17 112.3
V_1 MAX 250 19/01/2007 08:06:17 19/01/2007 09:52:33 19/01/2007 08:06:17 267.4
V_2 MIN 120 19/01/2007 09:53:29 19/01/2007 09:55:10 19/01/2007 09:53:29 108.9
I_1 MAX 800 19/01/2007 09:53:29 19/01/2007 09:55:10 19/01/2007 09:53:29 876.9
By pressing the key, you can access the Setup Menu (see image below) to
delete the historic alarm LOGS of each phase.
4 - Operating Instructions 4 - 33
4.3.8 TREND
The Trend function allows the user to visualize the time trend of the electric magnitudes.
The activity of each magnitude is automatically recorded without having to start the
process manually. This function is provided with the autoscale option which gives an
optimal visualization of the curves representing the time trend of Voltages, Currents,
Active Powers, Reactive Powers, Apparent Powers and Power Factor.
Trend Setup
From each Menu page you can access the corresponding setup page (by pressing the
key.)
On the setup page it is possible to set up the time interval of the window on which the
Trends are traced. For instance, by selecting 3 minutes, the graph time axis corresponds
to 3 minutes and the same for the other settings.
4 - 34 4 - Operating Instructions
Energy Explorer automatically chooses the scale to use in order to point out the va-
riations in time of electric magnitudes and provide a clearer view of the phenomena
considered.
The minimum and maximum values on which to define the graph scale are indicated
in the lower and upper part of the window respectively.
8.3 - Trend P1, P2, P3. 8.4 - Trend Q1, Q2, Q3.
4 - Operating Instructions 4 - 35
4.4 DATALOGGER
This menu allows the user to enable and/or set measuring campaigns in order to benefit
from one of the most interesting functions of the Energy Explorer: the data-logger.
This analyser can use up to 8 GB (8000 MB) compact flash memories, allowing the
storage of a huge amount of data.
As can be seen on page 9.1 (shown below), Energy Explorer offers 2 different cam-
paign types:
Record Timing
A measuring campaign is a set of data organized in records and the record content
depends on the type of campaign.
Each record refers to a time window corresponding to 60 periods of the wave form.
Here is an example: in a 50Hz electric system, 60 periods correspond to a 1.2 sec
interval; in a 60Hz system, 60 periods correspond to a 1 sec interval.
• Timing:
Energy Explorer stores the records at the intervals set in the apposite edit, determining
the storage of the record each n-seconds (see Record picture)
• Time Based:
In this mode Energy Explorer stores all the samples of a 60 period buffer (for each
input channel: consequently it can detect 7 samples every 195μs approximately) with
the time intervals set in the corresponding text box.
Nota:
It is not possible to set values lower than 5 seconds.
However, the big advantage of this type of campaign is that you can build the exact
wave forms of the input signals of the whole campaign from a remote computer
using the PE Studio software.
This type of campaign can be started both manually by the operator and schedu-
led, which means that it can be programmed according to a scheduling where the
starting and ending date/time can be defined.
Consequently, the scheduling also allows the user to program a number of campai-
gns.
4 - 36 4 - Operating Instructions
• RMS (efficacious values)
During an “RMS” campaign, a record is made of the processed values (effective values)
of all the magnitudes except wave form samples.
RMS Campaign
This type of campaign, too, can be started both manually by the operator and sche-
duled, which means that it can be programmed according to a scheduling where the
starting and ending date/time can be defined.
Consequently, the scheduling also allows the user to program a number of campaigns.
The beginning of the campaign is indicated by the syimbol .
4 - Operating Instructions 4 - 37
4.4.1 CAMPAIGN START AND STOP
“Time Based” and “RMS” campaigns can be started both manually or scheduled
according to a diary in which you can set the start and end dates and times of the
campaign.
Manual Campaign
The start of the campaign is indicated by the symbol on the top bar.
4 - 38 4 - Operating Instructions
SCHEDULED MEASURING CAMPAIGN
Select this button and press to access the campaign time schedu
ling.
This page allows display of the scheduled campaigns yet to be carried out.
To delete a scheduled measuring campaign, select it into the listbox and press ,
as indicated by the relevant button.
The button allows , opening the measuring campaign start and stop setup
page.
By pressing the button , the set campaign is added to the list and Energy
Explorer return to the page displaying the above list of campaigns.
Programation Campaign
When the automatic campaign is started (according to the schedule set), the page
4 - Operating Instructions 4 - 39
By selecting this button and pressing ,it is possible to immediately stop the
automatic campaign in progress (whose name is displayed in the green string).
The presence of the Error message in the message window A located under the listbox
indicates that a scheduling error of the automatic campaign has occurred.
The error types may be several but the most likely ones are:
Error 1
*Scheduling of a campaign in a past time interval.
*Campaign scheduled in a time interval when another campaign is already schedu-
led.
Error 28
*Insufficient space available on the Compact Flash.
4 - 40 4 - Operating Instructions
4.5 MEASUREMENT SETUP PAGES
Measurement Setup
4 - Operating Instructions 4 - 41
4.5.1 VOLTAGE SETUP
This page lets you configure a set of very important parameters concerning voltage
measurement.
Voltage Setup
4 - 42 4 - Operating Instructions
4.5.2 CURRENT SETUP
On this page it is possible to set the type of sensor used for measuring (flexible, clamp
or CT) and the relevant amperometric ratios.
Current Setup
NOTE:
you do not have to set K for the flexible sensors included (without amplifier), just the
full scale. Flexible sensors different from the included ones, with an external amplifi-
cation-box, must not be configured as “Flex”, but as “Clamp”.
One function that could prove to be very useful is the one enabled by pressing
the button.
In fact, this option, in the event of wrong installation of one or more amperometric
sensors, will let you virtually reverse the connection direction of the sensor(s), thus
avoiding, for example, having to disconnect the power supply of the electrical board
in order to correct the connection.
Thus you can access a page where you can select which of the 3 phases to reverse
using 3 checkboxes.
4 - Operating Instructions 4 - 43
4.5.3 AUXILIARY CHANNEL SETUP
Similar to the current setup page, this page lets you set the amperometric ratio of the
probe that can be connected to the auxiliary input.
In the case it is unnecessary to display this channel, you have the possibility to enable
or disable it as needed using a checkbox.
NOTE:
Only probes with 0÷1 VAC output may be connected, as indicated in sect. 6.1.2.
On this page the magnitude reset can be carried out by selecting the corresponding
key; or by selecting “General Reset”, you can reset all magnitudes and settings.
Setup Counters
4 - 44 4 - Operating Instructions
4.5.5 SETUP OF AVERAGE MAGNITUDES
The average magnitudes of the powers visualized on the measurement pages of menu
1 are calculated on a period selected by the user by means of the list-box in the setup
page.
Setup Average
•Sliding:
Measurement update (averages and peaks) is carried out at “moveable” intervals of
1 minute. For example, if a 15 minute value has been set, the update of the average
and peak values takes place every minute considering the average of the previous 15
minutes.
•Fixed:
Measurement update (averages and peaks) is carried out at fixed intervals equal to
the time selected in the list-box. For example, if a 15 minute value has been set, the
average measurement and update is carried out every 15 minutes.
4 - Operating Instructions 4 - 45
4.5.6 TARIFF SETUP
On the tariff setup page a list-box is visualized where the various tariff plans are repre-
sented; the name, the number of band and the threshold PF are shown.
The threshold PF corresponds to the average value of the Power Factor.
Below this value the calculation of the excess consumption of Reactive Power is pre-
set.
Example: by setting the Threshold PF at 0.90, on page 4.4, an exceeding reactive power
counter is obtained using the previously determined Threshold Power Factor value.
Tariff 1 Setup
The tariff analysis is performed according to the profile selected in the list-box; in the
example shown in the picture (Setup Tariff 1) the tariff analysis considered is performed
according to the “Summer Profile”.
press to enter the list-box (the frame around the window becomes green),
•To determine a new tariff plan press “new” and access the configuration menu of
(Setup Tariff 2).
•To disable the tariff analysis, select “Disable” and confirm by pressing .
4 - 46 4 - Operating Instructions
On the picture 2 page it is necessary to:
• determine the tariff profile name
• select the number of bands (from 1 to 4),
• set the threshold PF (percentage).
• select the magnitude the cost refers to (Kwh, KVAh)
Tariff 2 Setup
The following configuration page allows the user to configure the time band on whi-
ch to apply the tariff band considered (F1, F2, F3, F4) by setting the start and finish
time (hour and minutes).
The values possible for the minutes are 0 or 30, while the values possible for the
hours are between 0 and 23.
Tariff 3 Setup
4 - Operating Instructions 4 - 47
4.5.7 ALARM SETUP
On the alarm setup page a list-box is visualized where the alarms and their configu-
ration are shown.
To set a new alarm you have to select one of the keys corresponding to the phase
on which you want the alarm to be triggered (L1,L2,L3,Aux,3Phi).
Alarm 1 Setup
Alarm 2 Setup
Alarm 3 Setup
4 - 48 4 - Operating Instructions
The parameters of the alarm setting are described with reference to the images be-
low.
Delay: As for the “high” alarms, in order for the alarm to be triggered the value must
be over the threshold for a time equal to the Delay set for a constant period. Vice
versa, for the “low” alarms, the value must be lower than the threshold for a time
equal to the Delay set for a constant period.
Hysteresis: For the “High” alarms, the deactivating mechanism is only triggered if
the measure is lower than the (Threshold - % Hysteresis) value. For the “Low” alarms,
the deactivating mechanism is only triggered if the measure is over the (Threshold +
% Hysteresis) value.
The values on which it is possible to set an alarm can be selected on the setup page
in the list-box.
4 - Operating Instructions 4 - 49
4.6 INSTRUMENT SETUP PAGES
Instrument Setup
4 - 50 4 - Operating Instructions
4.6.1 DATE AND TIME SETUP
This page allows you to set the current date and time by filling in 6 dedicated editbo-
xes (Month, Day, Year, Hour, Minutes, Seconds). By confirming the settings pressing
the “Update” pushbutton, you will automatically be taken to the “instrument setup”
menu.
In this page you can see the status of the Compact Flash memory inside Jupiter.
A pie chart indicates the quantity of memory used, whereas the listbox displays all of
the campaigns stored on the Compact Flash.
4 - Operating Instructions 4 - 51
4.6.3 SETUP OF COMMUNICATION INTERFACES
This menu allows the user to configure, where possible, the communication interfaces
between the Energy Explorer and the other peripherals (remote computer, external
printer, etc.) using the Ethernet 2 port and the RS232 1 serial port in particular.
2 1
4 - 52 4 - Operating Instructions
4.6.4 SETUP OF SERIAL INTERFACE
On the setup page the RS232 communication port can be configured by setting the
“Baud Rate”, the number of data bits, the parity type and the number of stop bits.
By selecting “Configure” and pressing Enter the setting of the RS232 serial commu-
nication port is confirmed.
Contrast Adjustment
4 - Operating Instructions 4 - 53
4.6.6 SETUP PRINTER
Setup printer
In this Setup you can determine the fields the user wants to put in the heading of the
print report. Every time the user wants to print a page, where possible, a heading with
the information included will be added.
By selecting “Enable Data”, it is possible to add the Date and Time the report is carried
out in the print report heading.
This page allows the setup of the language used by Energy Explorer.
Setup language
The arrow buttons allow the selection of the desired language, then confirm
by .
4 - 54 4 - Operating Instructions
4.6.8 SYSTEM UPGRADE SETUP
One great advantage of products like Energy Explorer (that is, equipped with Operating
System), is that the Manufacturer can supply the Customer updates and additional
options that improve and/or enhance its performance, even after it is purchased.
In this case, you just have to follow the instructions below in order to update the in-
strument’s performance:
a) Using a PC (with Compact Flash reader), copy the file named “image.bin” supplied
by Elcontrol Energy Net (together with a special alphanumerical code), onto the
Compact Flash.
Note:
in order to prevent possible corruption of the file, it is a good rule to carry out
“Safe Hardware Removal” (its icon is normally found on the “Applications
bar” of the Operating System of your PC) right after it is copied onto the memory
card.
b) While Energy Explòorer is turned off, insert the Compact Flash into the instrument's
Compact Flash slot.
c) Connect Energy Explorer to the mains power supply.
IMPORTANT: this operation is necessary so that Energy Explorer does not turn
off during the updating process due to the batteries becoming low.
d) Turn on the instrument and access the setup page displayed above.
e) Here you will find the instrument’s serial number and current software version.
Energy Explorer will be automatically turned off at the end of the procedure,
since it is necessary to reboot the system in order to load the new software.
4 - Operating Instructions 4 - 55
4.7 INSTRUMENT USE
This section describes a typical use of Energy Explorer.
The possible operations to be carried out are briefly described, starting from the
connection to the system up to the retrieval of measuring campaign data.
WARNING
Before connecting to the system, carefully read all the sections of this Instruction Ma-
nual. Elcontrol Energy Net S.p.A. declines all responsibility for direct or
indirect, accidental or consequent injuries suffered by the equipment,
user or third parties caused by improper use of the instrument.
Always observe the safety measures when connecting the instrument to the electric system,
i.e.:
• Always disconnect the power supply from the system.
• Establish the electrical connections before turning on the instrument.
• Disconnect the cables, probes or accessories not used during application.
• Wear special insulating gloves so as to avoid the possibility of electrocution.
• Wear safety shoes.
• Check that the instrument is intact, and does not have any mechanical damage.
• Check that the cables and the other accessories are not damaged, and that the
insulation around the conductors is intact.
• If possible, work with the help of an assistant.
• Always check that the connections are properly made.
As the first operation, fasten the phases with the amperometric sensors.
IMPORTANT
The amperometric sensors supplied are marked not only by a coloured wire marker
clamp (that identifies its phase for matching with the relevant amperometric input
hub) but also by an arrow that indicates the right current flow direction.
Afterwards, make the connections of the voltage cables, plugging the relevant alligator-
clip terminals on them and matching the cable colours with those of the voltage input
hubs at the back of the instrument.
4 - 56 4 - Operating Instructions
THREE-PHASE connection with neutral (4 wires)
4 - Operating Instructions 4 - 57
SINGLE-PHASE connection (2 wires)
4 - 58 4 - Operating Instructions
4.7.2 INSTRUMENT START UP
To turn Energy Explorer on, and only after you have made all of the electric
system connections as described on the foregoing sections, you have to
The setup of the previous use is stored by the instrument, and this page displays the
configuration that was set when Energy Explorer was last switched off.
In this way, it will be possible to check whether Energy Explorer configuration is ap-
propriate for the expected use.
NOTE:
After a long period of inactivity, the instrument may lose the date and time set due to
an insufficient battery change. Upon turning on, a message will be displayed informing
the operator of this condition. To set date and time, see sect. 4.6.1.
4 - Operating Instructions 4 - 59
4.7.3 CHECK OF THE PROPER CONNECTION TO THE SYSTEM
Figura A
Figura B
To avoid having to remove and reconnect the amperometric probe (requiring the
disconnection of the system and turned the instrument off), Energy Explorer allows
“virtually” reversing the connection direction of the sensor(s).
4 - 60 4 - Operating Instructions
In this case, press the MEASUREMENT SETUP page to access
the setup of the type of sensor used, then press to open the next page
shown below.
Select the checkbox corresponding to the clamp not properly installed, then press
Return to the PHASOR page to check the proper direction of all vectors depicting
the 3 phases.
If an error in the correct phase sequence is detected (see figure C), the 2 phases must
be inverted.
Figura C
4 - Operating Instructions 4 - 61
Turn off the system and invert the probe cables corresponding to the phases not
properly displayed.
Power on the system again.
Energy Explorer should display the proper sequence of the phases shown in figure
A.
FASE 1
Figura A
FA
3 SE2
SE
FA
The measuring campaigns are an important feature of Energy Explorer, as they allow
the immediate or scheduled recording of multiple parameters.
These parameters are stored to a memory card (COMPACT FLASH with capacity up
to 8 GB) and later can be processed and analysed on PC.
The methods for performing measuring campaigns are described in sect. 4.4.
NOTE:
In the case of scheduled campaigns, Energy Explorer must remain turned on (prefe-
rably
connected to the mains to avoid exhausting the battery packs).
The red LED on the front side of the instrument indicates that the instrument is on.
At the end of the manual measuring campaigns or measurements, the instrument can
be turned off.
Remove the COMPACT FLASH from its slot, then place Energy Explorer and all the
accessories in the special case included in the supply.
To ensure longer life of instrument and accessories, clean them before placing them
into the semi-rigid case included in the supply.
4 - 62 4 - Operating Instructions
4.7.6 ANALYSIS OF THE MEASURED DATA
The data stored on the COMPACT FLASH may be downloaded, read and processed
by any PC where the PE Studio software included in the supply is installed.
The Instruction Manual of the PE Studio software for processing the data recorded by
the Energy Explorer professional power analyser can be found on the software
4 - Operating Instructions 4 - 63
Chapter 5
Maintenance
Index chapter 5
5 MAINTENANCE................................................................................................ 5-3
5.1 INSTRUMENT STORAGE ........................................................................ 5-3
5-2 5 - Mainutenance
5 MAINTENANCE
• Clean the instrument and the accessories included in the supply with a clean, lint-free
cloth. DO NOT USE DETERGENTS OR CORROSIVE OR ABRASIVE SUBSTAN-
CES.
• Clean the screen and the alphanumerical keyboard with soft and clean cloths.
DO NOT USE DETERGENTS OR CORROSIVE OR ABRASIVE SUBSTANCES.
• After use, store Energy Explorer and the accessories included in the supply in the
special case.
• Do not store the instrument (for short or long periods) in wet places and/or at
temperatures not allowed (see sect. 6.1.3).
• Replace the battery packs as soon as you notice a progressive reduction of the
charge capacity.
5 - Maintenance 5-3
5-4 5 - Mainutenance
Chapter 6
Techinical Specifications
Index chapter 6
WEIGHT 1650 g
6.2.4 BATTERIES
NOTE 1
The charge duration and lifetime of the batteries are influenced by the number and
depth of the charge/discharge cycles carried out and by environmental factors such
as, for example, temperature.
NOTE 2
To increase the battery operating time of Energy Explorer, the screen backlight is
switched off if no key is pressed for 3 minutes (press any key to switch it on again).
NOTE 3
The instrument turns off automatically if the batteries reach a voltage level below 5.9V,
to prevent excessive battery discharge.
NOTE 4
If the instrument is not used for long periods (> 1 month), remove the batteries to
preserve their charge/discharge capacity.
1 N
⋅ ∑ (u i)
2
U RMS =
VOLTAGE, CURRENT N i =1
1 N
⋅ ∑ (i )
2
I RMS =
N i =1 i
RMS values measured every 10/12 periods as per
EN61000-4-30 standards, then aggregated to obtain a
mean value per second.
NOTE: for measurement precision and range, see the
“INPUT CHANNELS” specifications.
W
F =
P
PF V
A
Ratio between active and apparent power.
Accuracy: ± 0.01 of full scale.
1 N
W = ⋅ ∑ (u i )⋅ (ii )
ACTIVE POWER N 1
Calculated as products between instant V and I.
Accuracy: ±0.5% of the reading ± 0.1 of the full scale
2 2
THDU % = ⋅ 100
U1
I RMS − I 1
2 2
THDI % = ⋅ 100
I1
∑U n
THDV % = n=2
⋅ 100
U1
32
∑I n
THDI % = ⋅ 100
n=2
I1
HARMONICS Harmonics from the 1 to the 31 order calculated by
Fourier analysis carried out on 10/12 periods as per
EN61000-4-7 standards.
Accuracy: ± input channel error ± n * 0.1%
COSø Cosine of the angle between the voltage and the current
vector of the harmonic component referred to the same
phase. Angle accuracy U-I with traditional clamps 0-1V:
± n * 0.2° + clamp error
Angle accuracy U-I with flexible, non-amplified clamps:
± 1° ± n * 0.2° + clamp error
UNBALANCE: Percentage of reverse sequence component of the voltage
signal compared to the direct sequence component as
per EN61000-4-30 standards.
k
KWh = ∑ Pi ⋅ Ti
i =1
ACTIVE ENERGY Accuracy: ±0.5% of the reading ±0.1% of the full sca-
le
k
KVArh = ∑ VAri ⋅ Ti
REACTIVE ENERGY i =1
Accuracy: ±0.5% of the reading ±0.1% of the full sca-
le
k
KVAh = ∑ V
A i ⋅ Ti
APPARENT ENERGY i =1
Accuracy:±0.5% of the reading ±0.1% of the full scale
NOTE: n = harmonic order
N = number of samples
i = instantaneous value
k = analysis time
Ti = time interval (1 second)
Accessories
Index chapter 7
7-2 7 - Accessories
7 ACCESSORIES
Energy Explorer can use optional accessories to enhance its capacities, among
which:
Description
7 - Accessories 7-3
7-4 7 - Accessories
Via Vizzano, 44 - 40044 Pontecchio Marconi (BO) Italy
Tel: +39 051 6782006 - Fax: +39 051 845544
E-mail: sales@elcontrol-energy.net - vendite@elcontrol-energy.net
Web site: www.elcontrol-energy.net