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MICROVIP3PLUS

Energy and harmonics analyzer with memory

Description


 

MAIN FEATURES

The MICROVIP3 PLUS is a low cost, class 1 (IEC1036) high technology portable analyzer for both single phase and

three phase systems, manufactured by ELCONTROL ENERGY and supplied complete with three 1000A clip-on CTs,

voltage leads and all accessories in strong carry case.

The MICROVIP3 PLUS is capable of performing 189 true effective value measurements on an unbalanced three phase

system starting from three voltage and three current measurements: 33 parameters are displayed on its crisp high-contrast back-lit LCD, 156 only on its built-in printer.

The instrument comes complete with a printer for manually controlled or automatic timed printout of all measurements,

as well as a calendar/clock for the display and printout of time and date.

The instrument can operate from 230 VAC Voltage supply (110VAC model is also available) or from internal

rechargeable batteries with an autonomy of over 7 hours provided no printing is performed and the display back-lit is

switched off.

A non-volatile flash 1 MB on-board memory provides data storage over extended survey periods including waveform

capture for current and voltage.

The MICROVIP3 PLUS is fitted with an RS232 port for connection to a Personal Computer for remote data control and

fast download via high-speed serial link.

The instrument has been designed for portable, mobile use in industrial environments.

 

GREAT VERSATILITY

The MICROVIP3 PLUS measures average three-phase and phase-neutral true rms voltage on all three phases, (max 600

Vrms), equivalent three phase current and true rms current per phase, total three phase power and power per phase, total

three-phase power factor and power factor per phase, reactive and apparent three phase system power, frequency, active

and reactive energy consumption/export, voltage and current total harmonic distortion per phase.

MICROVIP3 PLUS memorizes energy consumption up to 999999 MWh and MVArh/MVAh and also memorizes

active, reactive and apparent power peaks integrated using the technique of mobile averages over 1, 2, 5, 10, 15, 20, 30

or 60 minutes.

The basic model, supplied with three 1000A AC clamp meters, is capable of measuring power level from a minimum of

35W (5V, 7A) single phase to a maximum of 1,80MW (600V 1000A) three phase.

Optional AC clamp meters for up to 3000A and other DC models are also available.

All external CT/PT ratios, star/delta connection and power integration period are fully programmable.

The built-in 42 column graphic printer provides additional 156 parameters against manual print commands, and is

coupled to a calendar-clock to print out date and time along with measurements and to permit the generation of

automatically timed printed printouts at intervals of 1 to 99 minutes (with all measurements related to the printout start

time): data includes V & I harmonics to 24th multiple with both DC component and Displacement factor, and V & I

waveform/harmonic bar chart printout.

 

PURPOSE AND USE

The MICROVIP3 PLUS is intended for use by electrical power users who need to obtain an in-depth knowledge of their

plant and systems. It is also extremely useful for plant engineers, installers, maintenance engineers and electricians in

fault diagnosis and in the adjustment and repair of active electrical plant.

The MICROVIP3 PLUS enables you to:

.Control loads and consumption;

.Reduce overloads and power loss;

.Check on the correct sizing of new plant entering service;

.Prevent overheating and insulation problems;

.Solve power factor correction problems;

.Identify and eliminate load peaks and associated power problems;

.Check 400 Hz naval plants and 600 Hz aeronautical plant;

.Check uninterrupted power supplies with AC inputs and DC outputs;

.Measure asymmetrical signals from PWM controllers.

 
 
 

Description


 

MAIN FEATURES

The MICROVIP3 PLUS is a low cost, class 1 (IEC1036) high technology portable analyzer for both single phase and

three phase systems, manufactured by ELCONTROL ENERGY and supplied complete with three 1000A clip-on CTs,

voltage leads and all accessories in strong carry case.

The MICROVIP3 PLUS is capable of performing 189 true effective value measurements on an unbalanced three phase

system starting from three voltage and three current measurements: 33 parameters are displayed on its crisp high-contrast back-lit LCD, 156 only on its built-in printer.

The instrument comes complete with a printer for manually controlled or automatic timed printout of all measurements,

as well as a calendar/clock for the display and printout of time and date.

The instrument can operate from 230 VAC Voltage supply (110VAC model is also available) or from internal

rechargeable batteries with an autonomy of over 7 hours provided no printing is performed and the display back-lit is

switched off.

A non-volatile flash 1 MB on-board memory provides data storage over extended survey periods including waveform

capture for current and voltage.

The MICROVIP3 PLUS is fitted with an RS232 port for connection to a Personal Computer for remote data control and

fast download via high-speed serial link.

The instrument has been designed for portable, mobile use in industrial environments.

 

GREAT VERSATILITY

The MICROVIP3 PLUS measures average three-phase and phase-neutral true rms voltage on all three phases, (max 600

Vrms), equivalent three phase current and true rms current per phase, total three phase power and power per phase, total

three-phase power factor and power factor per phase, reactive and apparent three phase system power, frequency, active

and reactive energy consumption/export, voltage and current total harmonic distortion per phase.

MICROVIP3 PLUS memorizes energy consumption up to 999999 MWh and MVArh/MVAh and also memorizes

active, reactive and apparent power peaks integrated using the technique of mobile averages over 1, 2, 5, 10, 15, 20, 30

or 60 minutes.

The basic model, supplied with three 1000A AC clamp meters, is capable of measuring power level from a minimum of

35W (5V, 7A) single phase to a maximum of 1,80MW (600V 1000A) three phase.

Optional AC clamp meters for up to 3000A and other DC models are also available.

All external CT/PT ratios, star/delta connection and power integration period are fully programmable.

The built-in 42 column graphic printer provides additional 156 parameters against manual print commands, and is

coupled to a calendar-clock to print out date and time along with measurements and to permit the generation of

automatically timed printed printouts at intervals of 1 to 99 minutes (with all measurements related to the printout start

time): data includes V & I harmonics to 24th multiple with both DC component and Displacement factor, and V & I

waveform/harmonic bar chart printout.

 

PURPOSE AND USE

The MICROVIP3 PLUS is intended for use by electrical power users who need to obtain an in-depth knowledge of their

plant and systems. It is also extremely useful for plant engineers, installers, maintenance engineers and electricians in

fault diagnosis and in the adjustment and repair of active electrical plant.

The MICROVIP3 PLUS enables you to:

.Control loads and consumption;

.Reduce overloads and power loss;

.Check on the correct sizing of new plant entering service;

.Prevent overheating and insulation problems;

.Solve power factor correction problems;

.Identify and eliminate load peaks and associated power problems;

.Check 400 Hz naval plants and 600 Hz aeronautical plant;

.Check uninterrupted power supplies with AC inputs and DC outputs;

.Measure asymmetrical signals from PWM controllers.

 
 
 

Technical specifications


 

Inputs:

L1, L2, L3, N, I1, I2, I3.

 

Input specifications:

Voltage: (L1-N, L2-N, L3-N) direct inputs max 600 Vrms (STAR);

(L1-L3, L2-L3, L1-L2) direct inputs max 600 Vrms (DELTA) from 0 to 600 Hz;

up to 999999 V (with external PTs whose primary and secondary are selectable).

Input impedance: 4 MOhm

Current: (I1, I2, I3) direct inputs 1 Vrms up to 600 Hz, or 1 VDC;

1000A from 30 to 600 Hz (with standard AC clamp meters);

from 0 to 600 Hz (with optional AC/DC clamp meters);

up to 999999 A (with external CTs whose primary and secondary are selectable).

Input impedance: 10kOhm

 

Voltmeter input overload:

maximum acceptable voltage 625 Vrms, peak voltage 825V.

 

Current input overload:

5 times full scale value (with protection trip at threshold value).

 

Units of measurement:

m, k, M, W, V, A, VA, Var, Hz, Wh, VArh, VAh, P.F. Cosø, THDF.

 

Measurement frequency:

1,2 seconds without harmonics - 2,5 seconds with harmonics.

 

Number of scales:

3 voltage scales; 3 current scales with automatic scale change.

 

Automatic scale change:

Scale change response time: 1,2 secs

Change to higher scale takes place at 105% active scale.

Change to lower scale takes place at 20% of active scale.

 

Clock:

Quartz, output to LCD

Printed date and time output.

 

Batteries:

One Ni-Cd 6V 940mAh battery of five 1,2V 940mAh elements in series, giving autonomy of approximately 7 hours

without printing and display backlight. Battery recharge time: 24 hours (from mains).

One 3,5V 280mAh lithium battery as memory buffer (guaranteeing memory backup for approximately 7 years).

IMPORTANT: when the lithium back-up battery is changed, date and time are lost.

Battery replacement must be carried out by qualified, authorized staff at ELCONTROL ENERGY service centres.

 

Measurement display:

Backlight LCD with temperature range of -30C to +80C.

 

Clock display:

4 digit LCD with temperature range of -10C to +60C.

 

Dimensions:

251 x 239 x 104 mm.

 

Instrument weight:

2,9 Kg.

 

Weight of MICROVIP3 PLUS KIT:

6,3 Kg.

Degree of protection : IP 40

 

OPERATING CONDITIONS AND TESTING

 

Environmental operating conditions:

Environmental temperature range: from -10C to +50C.

Relative humidity (R.H.): from 20% to 80%.

 

Storage temperature:

from -20C to +60C.

 

Condensation:

non-condensing environment.

 

Insulation resistance:

500 MOhm between voltmeter input connectors short-circuited between each other and instrument frame, between

power socket and instrument frame.

2 MOhm between voltage and current inputs.

 

Insulation voltage:

Tested to 2000 Vrms at 50 Hz for 60 seconds between voltmeter input connections (including neutral).

Tested to 3000 Vrms for 60 seconds between each connector and the instrument frame.

 

Construction standards:

Safety : IEC 1010-1, EN 61010-1, 600V cat. III

EMC : EN 50081-1, EN 50082-1, EN55022.

IEC 801-2, ENV50140 IEC 801-3, IEC 801-4

Conformity : CEE 89/336 (EMC)

CEE 73/23 - CEE 93/68 (Low Voltage Directive)

 

 

POWER REQUIREMENTS

 

External mains power:

230V .± 10% 50/60 Hz or 110V .± 10% 50/60 Hz

 

Consumption:

4 VA.

Internal battery power:

6V 940mAh N1-Cd battery with five 1,2V 940mAh elements in series.

 

 

PRIMARY MEASUREMENTS

Measuring method:

fixed sampling, A/D conversion.

 

Sampling frequency:

2,5 KHz.

 

Number of samples per phase:

250 (100 msec).

 

Measuring frequency:

~ 1,2 sec.

 

Automatic zero regulation:

every 1 minute.

 

 

PRIMARY MEASUREMENT ACCURACY

 

Measurement error in environment of 1C to 2C (after 10’ warm-up):

expressed as ± % Rdg. (reading) + % F.S. (Full Scale) – see tables.

 

Additional measurement error outside this temperature range:

± 0,02% F.S. for each °C outside range.

 

Sensitivity and accuracy of voltage measurements:

Direct input with max voltage = 750 Vrms at Full Scale.

Input voltage peak factor .1,6.

Input impedance .4 MOhm

 

Sensitivity, Full Scale and voltage accuracy

Rated Range

Sensitivity

Full Scale

S between 20% F.S. and 100% F.S.

37 Vrms

24 mV*

37,0 V

0,5%F.S.+ 0,5%Rdg.

174 Vrms

111 mV

174 V

0,3%F.S.+ 0,3% Rdg.

750 Vrms

480 mV

750 V

0,3%F.S.+ 0,3% Rdg.

             

(*) the minimum measurable signal is 1 V.

 

Sensitivity and accuracy of current measurement:

Direct input with max. 1 Vrms at Full Scale.

Input current peak factor .1,6

 

Sensitivity, Full Scale and current accuracy

Rated Range

Sensitivity

Full Scale **

S between 20% F.S. and 100% F.S.

50 mV

32 µ V*

50 mV

0,5%F.S.+ 0,5%Rdg.

232 mV

140 µ V

232 mV

0,3%F.S.+ 0,3% Rdg.

1 V

640 µ V

1 V

0,3%F.S.+ 0,3% Rdg.

             

(*) the minimum measurable signal is 2 mV.

(**) Full Scales for 50,0 - 232 - 1000 Amp. with 1000 A/1V clamp meters provided

(Error = sum of instrument + clamp meter errors).

 

Accuracy does not take account of clamp meter error.

 

Voltage and current measurement precision as a function of frequency:

no error over errors specified in tables for signal frequencies in 20-90 Hz range.

 

 

SECONDARY MEASUREMENTS ACCURACY:

 

Power (single or three phase), Active Energy (and Power Factor) : class 1 (IEC 1036)

 

Measurement of other secondary values:

error is expressed by the formula which defines the value (sections 8.6.1, 8.6.2 and 8.6.3), as a function of V, I and W.

 
 
 

Measures


 
 

L1

L2

L3

TOTAL

V

·

·

·

·

I

·

·

·

·

KW

·

·

·

·

KVA

     

·

KVAR

     

·

KWpeak

     

·

KVApeak

     

·

KVARpeak

     

·

PF

·

·

·

·

+KWH / -KWH

     

·

+KVARH / -KVARH

     

·

THDF V

·

·

·

 

THDF I

·

·

·

 

HZ

·

     

 

On printer

 

Harmonics order

i=0,..,24 for 50Hz

i=0,..,19 for 60Hz

L1

L2

L3

Vi

·

·

·

Ai

·

·

·

Cosfi1

·

·

·

 

 
 
 

Models


 

MicroWin

Data management software for Windows 9x and NT 4.0 developed

for MICROVIP3 Plus harmonics and power portable analyzers.

The Microwin software permits to download, catalogue and store the measurement surveys contained in the internal memory of Microvip3 Plus. Processing of such surveys is completely identical as for the numeric or waveform surveys performed by connecting the PC to the instrument in remote mode.

The software can also be used to perform waveform surveys graphically displaying voltages and current of each phase. The Harmonic Spectrum display shows the measures of voltage, current and Cosphi of all detected harmonics (0-24), both in numerical (absolute and percentage of fundamental) and bar-graph format.

While the survey is running, it is possible to display the real-time evolution of up to 4 different measures.

The user can select in any moment the number of traces to be displayed and the measurement associated to each channel.

Colors of the graphs can be personalized.

In off-line mode analysis all survey records are displayed in a spreadsheet format similar to Excel.

From the spreadsheet display the user can select up to four measures that can be represented as graphs. Measures and records to be processed can be chosen freely.

The survey configuration is easy and user-friendly. On a single window all important parameters can be set, as date and hour for the start/end of the survey, time between records, instrument setup and a descriptive label for the survey.

The scheduler window can be accessed at any time to add, cancel or edit measurement surveys.

 
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