EMM-R3-VA EMM-µ3-VA IM425-U v3.1 - 3... · PDF fileEMM-R3-VA EMM-μ3VA...

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EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 1 INSTRUCTION MANUAL IM425-U v3.1 EMM-R3-VA EMM-μ3-VA MULTIFUNCTION VOLT/AMMETER GENERAL The digital Multifunction Volt/Ammeter series EMM-VA allow monitoring the main electrical parameters present on a distribution line. The local display of the electrical parameters is being made through 3 display with red LED, which grant a good and simultaneous reading of various measures. The intuitive selection of the measures to visualise, which are signalled by their corresponding LED, completes a clear and simple front panel, which offer a lot of useful information. On top of the instantaneous measuring, these instruments visualise the maximum peak of the main parameters (maximum peak and maximum demand or maximum average value). Multifunction Volt/Ammeter series EMM-VA replace, in an unique device, all the functions of voltmeters, ammeters and frequency meters, permitting a great economic saving, due to reducing of dimension and wiring, so as optimising the instruments management, since one has most of all in one, for electrical boards, switch-boards and Gen-Sets. AVAILABLE MODELS EMM-R3-VA EMM-μ3-VA ACCESSORI ED OPZIONI accessories : transparent cover for frontal protection. options : C1 auxiliary power supply 230 V C2 auxiliary power supply 115 V 1A current inputs for CT ../1Amp. T current inputs with galvanic insulation (not for direct connection line insertion) P n.2 digital output alarm signal (Photomos ca/cc). INTRODUCTION The EMM-R3-VA and EMM-μ3-VA models are only featured for visualising the electrical parameters. The power supply is taken from the measured voltage or self-supplied. MESURED PARAMETERS Parameters Measuring units Identification Symbols Phase and three phase voltage [V-kV] V L1-N V L2-N V L3-N V L-N Phase to phase and three phase system voltages [V-kV] V L1-L2 V L2-L3 V L3-L1 V L-L Phase and three phase currents [A-kA] I L1 I L2 I L3 I Frequency [Hz] Hz L1 Hour meter [hr] hr1 hr2 hr3 STORED PARAMETERS Instantaneous Values: Maximum phase voltage [V-kV] V L1-N max V L2-N max V L3-N max Minimum phase voltage [V-kV] V L1-N min V L2-N min V L3-N min Maximum phase to phase voltage [V-kV] V L1-L2 max V L2-L3 max V L3-L1 max Maximum phase current [A-kA] I L1 max I L2 max I L3 max Measured value in 15’ Average phase current (maximum demand) [A-kA] I L1 max (avg) I L2 max (avg) I L3 max (avg) checks Check phase rotation

Transcript of EMM-R3-VA EMM-µ3-VA IM425-U v3.1 - 3... · PDF fileEMM-R3-VA EMM-μ3VA...

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 1

INSTRUCTION MANUAL IM425-U v3.1

EMM-R3-VA

EMM-µ3-VA MULTIFUNCTION VOLT/AMMETER GENERAL The digital Multifunction Volt/Ammeter series EMM-VA allow monitoring the main electrical parameters present on a distribution line. The local display of the electrical parameters is being made through 3 display with red LED, which grant a good and simultaneous reading of various measures. The intuitive selection of the measures to visualise, which are signalled by their corresponding LED, completes a clear and simple front panel, which offer a lot of useful information. On top of the instantaneous measuring, these instruments visualise the maximum peak of the main parameters (maximum peak and maximum demand or maximum average value). Multifunction Volt/Ammeter series EMM-VA replace, in an unique device, all the functions of voltmeters, ammeters and frequency meters, permitting a great economic saving, due to reducing of dimension and wiring, so as optimising the instruments management, since one has most of all in one, for electrical boards, switch-boards and Gen-Sets. AVAILABLE MODELS EMM-R3-VA EMM-µ3-VA ACCESSORI ED OPZIONI accessories: transparent cover for frontal protection. options: C1 auxiliary power supply 230 V C2 auxiliary power supply 115 V 1A current inputs for CT ../1Amp. T current inputs with galvanic insulation (not for direct connection line insertion) P n.2 digital output alarm signal (Photomos ca/cc). INTRODUCTION The EMM-R3-VA and EMM-µ3-VA models are only featured for visualising the electrical parameters. The power supply is taken from the measured voltage or self-supplied. MESURED PARAMETERS

Parameters Measuring units Identification Symbols Phase and three phase voltage [V-kV] V L1-N V L2-N V L3-N V L-N Phase to phase and three phase system voltages [V-kV] V L1-L2 V L2-L3 V L3-L1 V L-L Phase and three phase currents [A-kA] I L1 I L2 I L3 I Frequency [Hz] Hz L1 Hour meter [hr] hr1 hr2 hr3

STORED PARAMETERS

Instantaneous Values:

Maximum phase voltage [V-kV] V L1-N max V L2-N max V L3-N max

Minimum phase voltage [V-kV] V L1-N min V L2-N min V L3-N min

Maximum phase to phase voltage [V-kV] V L1-L2 max V L2-L3 max V L3-L1 max

Maximum phase current [A-kA] I L1 max I L2 max I L3 max

Measured value in 15’

Average phase current (maximum demand) [A-kA] I L1 max (avg) I L2 max (avg) I L3 max (avg)

checks Check phase rotation

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 2

INSTALLATION WARNING FOR THE USER Read carefully the instructions/indications contained in this manual before installing and using the instrument. The instrument described in this manual is intended for use by properly trained staff only. SAFETY This instrument has been manufactured and tested in compliance with EN 61010-1 standards. In order to maintain these conditions and to ensure safe operation, the person must comply with the indications and markings contained in the manual. When the instrument is received, before beginning installation, check that it's OK And it has not suffered any damage during transport. When starting installations make sure that the operating voltage and mains voltages are compatible with the device instructions. The instrument power supply must not be earthen. Only qualified and authorised personnel must carry out maintenance and/or repair. If there is ever the suspicious that, that there is a lack of safety, during operation, the instrument must be disconnected and cautions taken against accidental use. Operation is no longer safe when: The instrument doesn't work. - There is clearly visible damage. - After serious damage incurred during transport. - After a storage under unfavourable conditions.

WIRING For a correct use of the device, the wiring diagram contained in the present manual must be respected. The connections are available on the screw terminal:

- Auxiliary power supply: The power supply is take from voltage inputs. There are 3 different auxiliary supplies: Vn 110V = 100-125V 50-60Hz (option C2) Vn 230V = 220-240V 50-60Hz (option C1) Vn 400V = 380-415V 50-60Hz (standard)

In the standard version the voltage is 400V and it’s taken between the phases L2-L3. In the following table it’s possible to see the measurable voltage depending of the type of power supply.

Power supply terminals Rated voltage Range of measurable voltage

L2-L3 (phase to phase power supply) 400V 300÷500V phase to phase (175÷290V phase-neutral) 230V 175÷290V phase to phase (130÷170V phase-neutral) 110V 85÷145V phase to phase (50÷85V phase-neutral)

L3-N (phase – neutral power supply) 230V 300÷500V phase to phase (175÷290V phase-neutral) 110V 175÷290V phase to phase (100÷170V phase-neutral)

The standard version allows applying the instrument at all the three-phase network 400V with or without neutral supplied. For example for application on single phase 230V it will need the L3-N / 230V. While for applications in medium voltage (for example using external voltage transformer 15 / 0.1 kV phase to phase) it will need the version L2-L3 / 110V.

- measuring voltage inputs: 4 terminals are available for the connection to the 3 phase and neutral of the measuring network, the maximum voltage phase to phase shouldn't be over 500 V rms and it will always be depending on the auxiliary power supply. In case of a 3 phase system without neutral, or non-distributed neutral, to leave terminal N free. It’s possible to use external voltage transformer. In fact the transformation rate of the external transducer can be set in the SETUP of the instrument and the visualisation allows the reading of voltage up to 40,0 kV.

- measuring current inputs: 4 terminals are available for the connection to 3 external CT’s with secondary 5A, it’s possible to use 2 CT’s on 3 wires system (three phases Aaron wiring). The use of external CT’s is absolutely required. The transformation rate of the external transducer can be set in the SETUP of the instrument and the visualisation allows the reading of current up to 9,99 kA. NOTE: It's a must to respect the phase sequence. The connections between current and voltage phase inputs must not be inverted (for example, CT placed on phase L1 must correspond to the I1 input). So as it is not correct to invert S1 and S2 terminals. To fix the device at the panel, insert the two brackets into their corresponding grove holes, at the side of the enclosure and fix up the screws. It’s better to put an external protection with fuses for the voltage inputs and to use adapted cables for the working currents and voltages: section from 0.5 to 2.5 mm2.

REAR PANEL (connections side)

ENERGY COUNTERS

EMM-R3-VA EMM-µ3-VA

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 3

WIRING DIAGRAM

LOAD

INSERTION ON THREE PHASELINE WITH 4 WIRES WITH 3 TV

EMM

P1

S1

P1

P1

P2

S1

S1

S2

INSERTION ON THREE-PHASELINE WITH 3 or 4 WIRES

On line with 3 wires (without neutral or with neutral not supplied) the N terminal must not be connected

LOAD

EMM

P1

S1

P1

P1

P2

S1

S1

S2

N

L1L2L3

N

L1L2L3

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 4

LOAD

EMM

P1

S1

P1 P2

S1 S2

N

L1L2L3

CURRENT INSERTION ON THREE PHASE LINE WITH 2 CT (insertion AARON)

VOLTAGE INSERTION ONTHREE PHASE LINE WITH 3 WIRESWITH 2 VT

This insertion is possible only withthe internal CT version (-t suffix).

LOAD

EMM

L1L2L3

S2 S2S1 S1

P2P2 P1P1

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 5

LOAD

EMM

P1 P2

S1 S2

INSERTION ON BALANCED THREEPHASE LINE WITH 3 or 4 WIRES

On line with 3 wires (without neutral orwith neutral not supplied)the N terminal must not be connected

L1L2L3

LOAD

EMM

P1 P2

S1 S2

INSERTION ON SINGLE PHASELINE Only for model with phase-neutralpower supply (Vaux L3-N)

NL

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 6

FRONT PANEL DESCRIPTION

VL-N

VL-L

A

electrical multi meter

L1L1-2

L2L2-3

L3L3-1

Hzk

k

L

maxavg

MAX

h

B

CDE

A L

L1L1-2

L2L2-3

L3L3-1

electrical multi meter

MAX

maxavgA

VL-N

VL-L

k

Hzk

h

L

L1L1-2

L2L2-3

L3L3-1

electrical multi meter

MAX

maxavgA

VL-N

VL-L

k

Hzk

h

B

CE

A

D

DESCRIPTION:

A: Push-button for visualising of the three phase system parameters with the corresponding indication LED. By pressing during 5 seconds, user accedes to programming the instrument (SETUP).

B: Push-button for selecting the measures to visualise on display E.

C: LED’s for indicating the measures visualised on display E and the eventual multiplier factor of each parameter (reading k =kilo x1000).

D: LED for indicating the visualisation of the memorised peak values.

E: Three displays for visualising the measures, subdivided by phases. Should the LED L be glowing, it indicates the three-phase system value of the selected parameter.

A+B: By pressing the two keys simultaneously at the visualisation mode, it accedes to the visualisation of the memorised peak values.

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 7

MENU OF INSTRUMENT PROGRAMMING (SETUP) After the connecting the power supply to the instrument and waiting few seconds (all LED’s will glow and the first indication of the firmware appears on the display and all segments will glow later), press and keep pressing the key A during 5 seconds, when the message seT UP will appear on the display E. The values set are hold also in absence of the auxiliary power supply. SET GENERAL PARAMETER (SET UP) Entry to menu: seT UP seT Up

RESET SET DO1 SET DO2 SET HR_ DO_ OFF OFF

SET CT Increase Set CT ratio from 1 to 2000 Decrease SET VT Increase Set VT ratio from 0.1 to 400.0 Decrease

seT AV9 T Increase Set average time from 1 to 30 minutes Decrease seT 3pH BALANC Set connection UN_BAL Type 1PH L3 seT MDE -3- Set wiring connection type -4- seT SYN MDE L3 Set synchronism 50 type 60 seT SCHROLL ON OFF SET PAS Increase Set Password OFF - 0002 ÷ 9999 Decrease Confirm and end of general settings - Programming of the transformation rate of the external CT’s The programming of the CT’s rate considered as the rate between primary and secondary (example: with CT 1000/5, we must set 200), must be done with the push-button on the front panel. By pressing the key A again it will appear the message CT (current transformer) and the value of the transformation rate (set to 1 by the manufacturer). To increase the value press the B button while to reduce the value press the A button with B already pressed (the variation is unit for unit). To increase the speed up the value setting, it’s necessary to hold pressed the B or the couple A and B buttons, the variation will happen successively by tens and hundreds. To come back to increase or to reduce the value on unit by unit way, it’s necessary to release and to press the key again. To confirm the value set press the A button; in this way the instrument will pass to the successive programming. If no key is pressed during a 10-second interval of time, the instrument will exit automatically from programming, without saving the selected value.

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 8

- Programming of the transformation ratio of the external voltage transformers After the precedent programming phase, on E display will appear the inscription VT (voltage transformer) and the value of the transformation rate of the external TV (set to 1 from the constructor), considered as the rate between primary and secondary (example with TV 15/0.1 kV the value will be 150). In the same way at the programming of the CT rate will be possible to set this value. If the external TV are not used the value to set will be 1. To confirm the value press the A button. Programming of the average time (seT AVG T’) After the programming phase previously described, pressing another time the A key, on the E display will appear the message AVG T’ and the average time settable from 1 to 30 minutes. To increase the value press the B key. To decrease it, press the A and B keys together (from the condition of B pressed). To confirm it press the A key. The average time is the time used to calculate the average parameters (avg) and the maximum demand (maxD). Programming insertion mode It’s possible to set the following mode of insertion: UN_BAL in a unbalanced three-phase system (default), BALANC in a balance three phase system and 1PH L3 in a single phase insertion. In the 1PH mode are displayed only the measures of l3 phase and the relative hour counter; the status of phase rotation is not displayed. In the BALANC the current and the power factor of the L3 phase are used for the calculation of L1 and L2 measures. Programming wiring connection mode This setting allows to definite the wiring type connection. It’s possible to chose 3 wires or 4 wires. With the 4 wires connection the neutral parameter are displayed and enabled to use for the digital outputs settings. Programming of the synchronism type In this setting for the synchronization type, it’s possible to choose L3 to use the external frequency (on L3 phase) or 50, 60 Hz to use the internal clock. Activating or cancelling the automatic scrolling This allows selecting ON for activating or OFF for cancelling the automatic scrolling of the measures visualisation. Programming of the Password The instrument is supplied without password. When a password (from 0002 to 9999) is set, using the B (to increase), A e B (to decrease) and A (to confirm) keys, only who know this value can to enter in the setup. The password, in fact, is required all the time that someone try to enter in the setup (pressing the A key at least 5 seconds). If the password is wrong, the message PASS ERR will appear on F display and the instrument go back to the measures visualization. To input the password, when required by the instrument, at the enter of the setup, use the A, B and C keys as the same way done previously. PEAK VALUES AND ENERGY COUNTERS RESET (RESET) Enter in setup mode, press the B key up to show the message ReseT on the E display, press the A key, on the display will appear RES ALL NO, press the B key another time, the message commute in RES ALL yes, confirming with the A key all stored data will be deleted. Automatically the instrument come back to the measure visualization. Entry to menu:

seT UP seT Up RESET

SET DO1 SET DO2 SET HR_ --- OFF OFF (the visualization depends on the settings and the I/O status)

To enable the chosen type, press the B key to change the indication on display G from NO to yes. Confirm enabling cancellation, by pressing the A key. The indication on E display change from yes to --- .

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 9

PROGRAMMING OF THE DIGITAL OUTPUT (SET DO1 SET DO2) This setting is enabled only in the model with digital outputs (-p suffix in the order). The DO1 and DO2 digital outputs can be used to signal alarms (ALR) using a comparing with two adjustable threshold for each output. The DO1 modality setting is independent from DO2. In the menu SET DO1 and SET DO2 it’s possible to program the function of all digital outputs. In these menus are available the following modality: ALR SYS 3PH and ALR SYS 123. With ALR SYS 3PH the digital output will function as alarm verifying that the three phase value (average) doesn’t exceed the threshold set (ALR HI and ALR LO). With ALR PH_ 123 the digital output will function as alarm verifying that the maximum value of the single phases doesn’t exceed the maximum threshold set (ALR HI) and that the minimum value of the single phases doesn’t come down the minimum threshold set (ALR LO). The activation of the alarm output will come after some seconds of delay set (ALR DL). Enter to menu:

seT UP seT Up RESET

SET DO1 SET DO2 SET HR_ --- OFF OFF (the visualization depends on the settings and the I/O status)

ALR SYS 3PH To choose the output modality ALR PH_ 123

ALR SEl uLN To chose the parameter ALR SEl AMP to control ALR SEl VLL (see variable list) ALR SEL FRE (only for ALR SYS 3PH) AlR sel PH_

Set maximum alarm threshold Increase

ALR HI Decrease (after 0 there is OFF)

Set minimum alarm threshold Increase

ALR LO Decrease (after 0 there is OFF)

Set delay Increase

ALR Dl Decrease

Confirm and end of digital output settings.

ENTER IN THE SETUP From the measures visualization, press the A key for at least 5 seconds, the message SeT Up will appear on the E displays. CHOOSE THE DIGITAL OUTPUT TO PROGRAM Press repeatedly the B key until the message SET DO1 (DO1 output) or SET DO2 (DO2 output) appears on the E display. Press the A key to select this setting. SELECT THE MODALITY OF FUNCTIONING OF THE DIGITAL OUTPUT To select the functioning mode, using the B key: ALR SYS 3PH, (alarm on three phase value) and ALR PH_ 123 (alarm on minimum and maximum single phase value). Press A key to confirm. CHOOSE THE PARAMETER TO LINK TO THE DIGITAL OUTPUT With an alarm modality set, it’s necessary to select the parameters associated to the alarm output; by pressing the B key until the parameter choice appears on the third part (L3) of E display and the glowing the corresponding led on the D bar. Press A key to confirm the set. SET THE HIGH AND THE LOW THRESHOLDS On E display will appear the message ALR Hi with the high threshold value; confirming with the A key on the same display will appear the message ALR LO with low threshold value. The B key (to increase), A and B keys together (to decrease) are used to set the high and the low thresholds values. The range depends by the parameter and it is linked to the CT and VT ratios. Pressing A key to confirm. The threshold set is linked with CT and VT ratios, for this reason it’s necessary to make this operation after the programming of the CT and VT. The end scale value must be confirmed when CT and VT ratios are modified. The low threshold will be lower than high threshold. If the high threshold is set as OFF the low threshold will have the range of the high threshold.

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 10

t < delay

Digitaloutput

Threshold HI

delay

Hysteresis HI

Alarm

SET THE DELAY TO THE DIGITAL OUTPUT ACTIVATION Now it’s possible to set the delay that will pass between the alarm condition set and the activation of digital output. On E display will appear ALR DLY and the value expressed in seconds (range 1÷900). The modification of the value is done in the same way of the threshold set. With the confirmation (A key) the set is complete. The programming will be referred to the digital output indicated on E display (DO1 o DO2). With only the HI threshold set, the alarm condition is activated when the parameter set in alarm exceed the threshold. The digital output is enabled only if the alarm condition remain activated for all delay time set. From the activation of the digital output, the restore is automatic when the parameter decreases below the hysteresis value.

With only the LO threshold set, the alarm condition is activated when the parameter set in alarm drop below the threshold. The digital output is enabled only if the alarm condition remain activated for all delay time set. From the activation of the digital output, the restore is automatic when the parameter grow above the hysteresis value.

With both LO and HI threshold set, the alarm condition is activated when the parameter set in alarm is outside from the values band limited by LO and HI thresholds. The digital output is enabled only if the alarm condition remain activated for all delay time set. From the activation of the digital output, the restore is automatic when the parameter return inside the values band limited by LO and HI thresholds.

t < delay

Digitaloutput

Threshold LO

delay

Hysteresis LO

Threshold HI

Alarm

delay

Hysteresis HI

t < delay

Digitaloutput

Threshold LO

delay

Hysteresis LO

Alarm

Functioning for exceeding the

maximum threshold

Functioning for dropping above

minimum threshold

Functioning for exceeding or dropping by the band defined by

maximum and minimum threshold

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 11

PROGRAMMING OF THE HOURS COUNTER (SET HR_) The hour counter will be increased when the measure of the parameter will exceed the set threshold value. The threshold set is applied to the system value of the parameter selected. For the frequency the referring it’s the same to the measure of the L3 phase.

seT UP seT Up RESET

SET DO1 SET DO2 SET HR_ --- OFF OFF (the visualization depends on the settings and the I/O status)

HR_ SEl VLN HR_ SEl AMP To chose the parameter HR_ SEl VLL (see the variable list) HR_ SEL FRE

Set the threshold Increase

HR_ HI Decrease

Confirm and end of hour counter settings. SELECT THE PARAMETER TO LINK TO THE HOURS COUNTER From the previous setting, pressing the B key it’s possible to set the hours counter: the message SET HR_ appears on the E display. Press the A key to define the parameter to link to the hours counter. Press more time the B key to select the parameter and the A key to confirm it. SET THE THRESHOLD Subsequently it’s necessary to set the threshold using the B key (to increase) and A and B keys (to decrease). Confirm with A key. I/O INFO PAGE After the hour counter set, the I/O info page appears in E displays: on the second part (L2) the status of the first digital output (DO1), on the third part (L3) the status of the second digital output (DO2). VARIABLE LIST VLN three-phase voltage AMP three-phase current VLL phase to phase voltage FRE frequency PH_ check the rotation phase voltage connection

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 12

MEASURES VISUALISATION The measures reading is visualised on the display E, showing the three phase measures (L1, L2 y L3 respectively) of the indicated parameter by the C LED. For measuring the phase to phase voltage (V L-L), the three measures are understood V L1-L2, V L2-L3, V L3-L1 respectively, as indicated on the front plate. The selection of the parameter to be visualised is made by pressing the key B. It will be indicated by the C LED. By pressing the key A, the selected parameters will be visualised on display E, as three phase values (average of the individual phases for voltages and currents) with the corresponding lighting of the LED, placed internally in the key. With LED L turned off and unbalanced three phase system mode (UNBALANC) are displayed in the following sequence: - LED VL-N ON: On the display are showed the phase voltages - LED VL-L ON: On the display are showed the phase to phase voltages - LED A ON: On the display are showed the phase current - LED Hz ON: on L3 display is showed the frequency measured on L3 phase, on L1 display will appear the

message PHASE ROTATION with a bright dash that rotate clockwise to indicate that the phase rotation is correct, or the message ERR if the phase rotation is wrong.

- LED h ON: On the display are showed the phase hour counters HR1, HR2, HR3. The reading of the meters uses the 6 digits (maximum reading 99999.9) of the E display the measure comes visualised in such a way that, the display L1 will show the first 3 digits, the display L2 the second 3 digits and the display L3 the identification of the corresponding hour meter (HR1, HR2, HR3). Each hour counter is activated when the measure of phase corresponding to the selected parameter exceed the threshold set (see SET HR_). The measure is expressed in hour (integer) and tenths of hours (decimal).

By pressing the A key the LED L is enabled and the system values are displayed. Please note that the unit value may be expressed in kilo, when the corresponding LED C are glowing (indicated in the front plate as k). The visualised frequency is referred to the line L3.

EMM-R3-VA

VL-N

VL-L

A

L1

L2

L3 Hzk

k

Lh

EMM-R3-VA

VL-N

VL-L

A

L1

L2

L3 Hzk

k

Lh

[1] Visualization PHASE VOLTAGES

EMM-R3-VA

VL-N

VL-L

A

L1

L2

L3 Hzk

k

Lh

[2] Visualization PHASE TO PHASE VOLTAGES

EMM-R3-VA

VL-N

VL-L

A

L1

L2

L3 Hzk

k

Lh

[3] Visualization PHASE CURRENTS

EMM-R3-VA

VL-N

VL-L

A

L1

L2

L3 Hzk

k

Lh

[6] Visualization HOUR COUNTER 3

215h and 30’

EMM-R3-VA

VL-N

VL-L

A

L1

L2

L3 Hzk

k

Lh

[4] Visualization PHASE ROTATION CORRECT

[4] Visualization PHASE ROTATION WRONG

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 13

Visualizations parameter of system (LED L on),

In balanced three phase system mode (BALANC) are available only the visualization [7] and [8]: In single phase mode (!PH L3) the pages displayed are the following:

EMM-R3-VA

VL-N

VL-L

A

L1

L2

L3 Hzk

k

Lh

[9] Visualization measure of L3 phase. L1: AVERAGE PHASE VOLTAGE L2: AVERAGE PHASE CURRENT L3: FREQUENCY

EMM-R3-VA

VL-N

VL-L

A

L1

L2

L3 Hzk

k

Lh

[10] Visualization HOUR COUNTER 3

215h and 30’

EMM-R3-VA

VL-N

VL-L

A

L1

L2

L3 Hzk

k

Lh

[7] Visualization measure of system L1: AVERAGE PHASE VOLTAGE L2: AVERAGE PHASE CURRENT L3: FREQUENCY

EMM-R3-VA

VL-N

VL-L

A

L1

L2

L3 Hzk

k

Lh

[8] Visualization measure OF system L1: AVERAGE PHASE TO PHASE VOLTAGE L2: AVERAGE PHASE CURRENT L3: FREQUENCY

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 14

VISUALISING THE INSTANTANEOUS AND AVERAGE PEAK (MAXIMUM) VALUES By pressing the A and B keys simultaneously, the instrument enters into the visualisation of the peak (maximum) values: The LED D will glow. The memorised peak (maximum) values, which might be selected by the B key, will be shown on the display E. The indication of the value and the value itself will be visualised alternatively on the display E. If no key is pressed during an interval of time of 10 seconds, the instrument will return automatically to the visualisation of measures. There are two types of the maximum memorised values: The instantaneous maximum memorised value is the maximum reached value of the parameter, during 1-second al least. The average maximum values (maximum demand) memorise the maximum average value of the parameter, reached during the average time. The integration for calculating the average values is synchronised every time that the instrument is switched on. During the visualisation of the maximum memorised values, the values are visualised by alternating the indication of the visualised parameter with the measured values. The maximum values of the parameters, which are selectable with the B key, are as follows:

Parameter Display Signalling LED VL-N maximum instantaneous PEA HI VL-N VL-N minimum instantaneous Pea LO VL-N VL-L maximum instantaneous PEA HI VL-L I phase maximum instantaneous PEA LO A I phase average maximum AVG HI A

NOTE regarding the measures The refresh time of display is lower than 1 second and it corresponds to the processing time of measure according to the used measuring methodology, allowing a comfortable reading of values, also in presence of unexpected deviation of the measured parameters. Should the case be that the instrument is being used in a single-phase line, please bear on mind that the valid values are referred to phase L3. Other visualised values shouldn’t be considered, since they correspond to three-phase system. In case that the indicated measures aren’t reliable or they are absurd, it’s important to check carefully the current and voltage inputs connection, so as the phase sequence. Check that current and voltage correspond to the same phase (on input L1 it will be connected phase voltage L1 and the CT will be placed on phase L1), thence terminal S1 of CT will be wired to the relative terminal S1 on the instrument. If the secondary of the CT is connected to other instruments also, it can be experienced some measuring problems, according with the typology of current inputs. Should that be the case, the user should select the option of the instruments type (T) with internal CT’s.

VL-N

VL-L

A

electrical multi meter

L1L1-2

L2L2-3

L3L3-1

Hzk

k

L

maxavg

MAX

h

142148142

B

C

CE

A

D

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 15

TECHNICAL CHARACTERISTICS MEASURES, ACCURACY Voltage True rms for the phase, phase to phase and three-phase voltage

Total measuring range: 20÷500V trms phase-phase - 290V rms phase-neutral, depending always to the power supply voltage. Visualization (0,02÷50,0kV) – measuring accuracy: ±0,5% ±1 digit

Current True rms for the phase and three-phase currents. Measuring range: 0,02÷5A trms - accuracy: ±0,5% ±1 digit Visualization 0,02÷9990A

Frequency Frequency of the phase L1 – measuring range: 45÷65Hz accuracy: ±0,5% ±1 digit

AUXILIARY POWER SUPPLY -INPUTS Aux. power supply Standard 380-415V ±15% - options 100-125 / 220-240V ±15%

Frequency 45-65Hz - absorption 3VA Voltage taken from the measuring voltage inputs

Voltage inputs from 20 to 500V phase-phase (always depending on the auxiliary supply); permanent overload +20% - impedance at the input: 1 M Three-phase wiring with 3 or 4 wires, and single-phase wiring MV connection through external VT with programmable transformation ratio from 1 to 400

Current inputs From 0,02 to 5A; permanent overload 30% - from external CT’s with secondary 5A primary programmable from 5 to 10000A – self consumption <0,5VA

GENERAL Display and keyboard 3 display with red LED of 10 mm each, made of 3 digits of 7 segments

2 keys for selection of measures and programming Mechanical Protection degree: IP52 frontal - IP20 enclosure and terminals - weight: approx. 0,5 kg.

Wiring through terminals for screws, cross section cable of 2,5 mm2 Self-extinguishing plastic enclosure – EMM-R3-VA: Flush mounting DIN 96x96mm, depth 56mm EMM-µ3-VA: Flush mounting DIN 72x72mm, depth 95mm

Environment Working temperature: -10÷60°C; relative humidity <90% Storage temperature: -25÷70°C Isolation test: 3 kV during 1 minute

Standards of reference and Marking

CEI EN 50081-2; CEI EN 61000-6-2; CEI EN 61010-1

EMM-R3-VA EMM-μ3VA instruction manual IM425-U v3.1 pag. 16

DIMENSIONS

68

68

R3

727

2Drill panel

L

L1L1-2

L2L2-3

L3L3-1

electrical multi meter

MAX

maxavgA

VL-N

VL-L

k

Hzk

h

L

L1L1-2

L2L2-3

L3L3-1

electrical multi meter

MAX

maxavgA

VL-N

VL-L

k

Hzk

h

81 149

65,8888

888

888

VL-N

VL-L

A

electrica l multi meter

L1L1-2

L2L2-3

L3L3-1

Hzk

k

L

maxavg

MAX

h92

92

R3

96

96 9096

569

20

Drill panel

EMM-R3-VA

EMM-µ3-VA

For other applications, please contact with CONTREL technical assistance department.