KMB SMV User manual

KMB systems, s.r.o.
Dr. M. Horákové 559, 460 06 Liberec 7, Czech Republic
tel. [phone], fax [phone]
email : [email protected], internet : www.kmb.cz
SMV, SMP
SMVQ, SMPQ
Multifunctional Panel Meters &
Power Quality Analyzers
Operating Manual
Firmware v. 1.0.0.3035
07 / 2013

SMV / SMP / SMVQ / SMPQ
LIST O CONTENTS
1. GENERAL...........................................................................5
1.1 Common features....................................................................................................................................... 5
2. BRIE DESCRIPTION........................................................7
2.1 Instrument Connection.............................................................................................................................. 7
2.2 SMV / SMVQ Instrument Setup................................................................................................................. 8
2.2.1 Locking and Unlocking of the Instrument..............................................................................................9
2.3 SMV / SMVQ Instrument Operation.........................................................................................................10
2.4 SMP / SMPQ Instrument Setup............................................................................................................... 13
2.4.1 The Instrument Lock........................................................................................................................... 14
2.4.1.1 Locking........................................................................................................................................ 14
2.4.1.2 Unlocking from the User Locked State........................................................................................ 14
2.4.1.3 Unlocking from the Admin Locked State......................................................................................14
2.5 SMP / SMPQ Instrument Operation.........................................................................................................14
3. DETAILED DESCRIPTION...............................................16
3.1 Basic Characteristics............................................................................................................................... 16
3.2 Manufactured Models and Marking........................................................................................................ 18
3.3 Installation................................................................................................................................................ 21
3.3.1 Physical.............................................................................................................................................. 21
3.3.2 Protective Conductor Connection....................................................................................................... 21
3.3.3 Supply Voltage Connection................................................................................................................. 21
3.3.4 Measured Electrical Quantities Connection........................................................................................21
3.3.4.1 Measured Voltages...................................................................................................................... 21
3.3.4.2 Measured Currents...................................................................................................................... 22
3.3.4.2.1 Standard „X/5A”-Option Instruments – Current Signals Connection.....................................22
3.3.4.2.2 „F“-Option Instruments – Current Signals Connection........................................................22
3.3.4.2.3 „S“- and „P“- Option Instruments – Current Signals Connection.........................................23
3.3.5 Connection Setting.............................................................................................................................. 24
3.3.5.1 Connection Mode, Type and VT/CT Ratios.................................................................................24
3.3.5.2 Nominal Voltage UNOM and Nominal Power PNOM..................................................................24
3.4 Instrument Manual Manipulation and Setting........................................................................................ 25
3.4.1 SMV/SMVQ Instrument Manipulation and Setting...............................................................................25
3.4.2 SMP/SMPQ Instrument Manipulation and Setting...............................................................................25
3.4.2.1 Data Area – Status Bar - Toolbar................................................................................................25
3.4.2.2 Main Menu................................................................................................................................... 26
3.4.2.3 Actual Data Group....................................................................................................................... 26
3.4.2.4 Daily and Weekly Graphs............................................................................................................ 27
3.4.2.5 Electricity Meter Data Group........................................................................................................ 28
3.4.2.6 Power Quality Data Group........................................................................................................... 28
3.4.2.7 Instrument Setting....................................................................................................................... 28
3.4.2.7.1 Display Setting..................................................................................................................... 28
2

SMV / SMP / SMVQ / SMPQ
3.4.2.7.2 Installation Setting................................................................................................................ 28
3.4.2.7.3 Clock Setting........................................................................................................................ 28
3.4.2.7.4 Average Values Processing Setting....................................................................................29
3.4.2.7.5 I/O Setting........................................................................................................................... 29
3.4.2.7.6 Remote Communication Setting........................................................................................... 29
3.4.2.7.7 Embedded Electricity Meter Setting....................................................................................30
3.4.2.7.8 Archiving Setting................................................................................................................. 30
3.4.2.7.9 Power Quality Evaluation Setting........................................................................................30
3.4.2.8 Instrument Lock........................................................................................................................... 31
3.4.2.9 Instrument Information................................................................................................................. 31
3.4.2.9.1 Info – General Window........................................................................................................ 31
3.4.2.9.2 Info – Archive Status........................................................................................................... 31
3.4.2.9.3 Info – Producer.................................................................................................................... 32
3.5 Description of Operation......................................................................................................................... 32
3.5.1 Method of Measurement..................................................................................................................... 32
3.5.1.1 Voltage Fundamental Frequency Measurement Method.............................................................32
3.5.1.2 Voltage and Current Measurement Method.................................................................................32
3.5.1.3 Power and Power Factor Evaluation Method...............................................................................33
3.5.1.4 Fundamental Harmonic Power, Power Factor and Unbalance Evaluation Method......................34
3.5.1.5 Voltage Events Evaluation Method.............................................................................................. 35
3.5.1.6 Harmonics, Interharmonics and THD Evaluation Method............................................................36
3.5.1.7 Flicker Evaluation Method........................................................................................................... 36
3.5.1.8 Ripple Control Signal (RCS) Evaluation Method.........................................................................36
3.5.2 Measured Values Evaluation and Aggregation...................................................................................36
3.5.2.1 Display Actual Values Evaluation and Aggregation.....................................................................36
3.5.2.2 Average Values Evaluation.......................................................................................................... 37
3.5.2.2.1 Maximum and Minimum Average Values............................................................................38
3.5.2.3 Recorded Values Aggregation..................................................................................................... 41
3.5.3 Harmonics, Interharmonics and THD.................................................................................................. 41
3.5.3.1 Harmonics, Interharmonics and THD Aggregation......................................................................41
3.5.3.2 Harmonics and THD Presentation............................................................................................... 42
3.5.4 Embedded Electricity Meter................................................................................................................ 42
3.5.4.1 Electric Energy Processing.......................................................................................................... 42
3.5.4.2 Maximum Active Power Demand Registration.............................................................................42
3.5.4.3 Setting......................................................................................................................................... 43
3.5.4.4 SMV/SMVQ Instrument Energy Presentation..............................................................................43
3.5.4.5 SMV /SMVQ Instrument Maximum Active Power Demand Presentation.....................................44
3.5.4.6 SMP/SMPQ Instrument Energy Presentation..............................................................................44
3.5.4.7 SMP/SMPQ Instruments Maximum Active Power Demand Presentation....................................45
3.5.5 Power Quality..................................................................................................................................... 45
3.5.5.1 Power Quality Evaluation............................................................................................................. 45
3.5.5.2 Power Quality Presentation......................................................................................................... 46
3.5.6 Record Blocking.................................................................................................................................. 46
3.6 Inputs & Outputs..................................................................................................................................... 47
3.6.1 Inputs & Outputs Connection.............................................................................................................. 48
3.6.1.1 Relay Output Connection............................................................................................................. 48
3.6.1.2 Impulse Output Connection......................................................................................................... 48
3.6.1.3 Digital Input Connection............................................................................................................... 48
3.6.1.4 Analog Input Connection............................................................................................................. 48
3.6.2 Inputs & Outputs Setup....................................................................................................................... 49
3.6.2.1 Digital Output Setup – Standard Output......................................................................................49
3.6.2.1.1 Input Events........................................................................................................................ 49
3.6.2.1.2 Control Quantity Size Event................................................................................................50
3.6.2.1.3 Instrument State Event........................................................................................................ 52
3.6.2.1.4 Permanent State Event.......................................................................................................52
3.6.2.1.5 Output Control Formula....................................................................................................... 53
3.6.2.1.6 Output Type........................................................................................................................ 53
3

SMV / SMP / SMVQ / SMPQ
3.6.2.2 Digital Output Setup - Impulse Output......................................................................................... 53
3.6.2.3 Digital Output Setup – Remote Controlled Output.......................................................................54
3.6.2.4 Digital Input Setup....................................................................................................................... 54
3.6.2.5 Analog Input (A) Setup................................................................................................................ 54
3.6.2.6 Temperature Input (T) Setup.......................................................................................................54
3.7 Additional irmware Modules................................................................................................................ 54
3.7.1 VE Module - Voltage Events............................................................................................................... 54
3.7.1.1 Voltage Events Evaluation........................................................................................................... 55
3.7.1.2 Voltage Events Presentation....................................................................................................... 55
3.7.2 RCS Module – Ripple Control Signal.................................................................................................. 56
3.7.2.1 RCS Evaluation........................................................................................................................... 56
3.7.2.2 RCS Processing Setting.............................................................................................................. 56
3.7.2.3 RCS Signal and RCS Telegram Visualization.............................................................................57
3.7.2.4 RCS Telegram Reception Indication with the A1/A2 LEDs..........................................................58
3.7.2.5 RCS Signal and Telegram Viewing in the ENVIS Program..........................................................58
3.7.3 GO Module – General Oscillograms...................................................................................................59
3.8 Transient Recording............................................................................................................................... 59
3.8.1 PQ RMS Trends and PQ Oscillograms...............................................................................................60
3.8.2 General Oscillograms......................................................................................................................... 60
3.8.3 RMS Trend and Oscillogram Triggering..............................................................................................61
3.8.3.1 General Triggering....................................................................................................................... 61
3.8.3.2 Wave Change Triggering............................................................................................................. 61
3.8.3.3 General Oscillogram Record Triggering Methods........................................................................61
4. COMPUTER CONTROLLED OPERATION......................63
4.1 Communication Links.............................................................................................................................. 63
4.1.1 Local Communication Link.................................................................................................................. 63
4.1.2 Remote Communication Link.............................................................................................................. 63
4.1.2.1 RS-232 Interface......................................................................................................................... 63
4.1.2.2 RS-485 Interface......................................................................................................................... 63
4.1.2.2.1 Communication Cable......................................................................................................... 64
4.1.2.2.2 Terminating Resistors......................................................................................................... 64
4.1.2.3 Ethernet (IEEE802.3) Interface....................................................................................................64
4.1.2.4 Communication Protocols............................................................................................................ 64
4.1.2.4.1 KMB Communications Protocol........................................................................................... 64
4.1.2.4.2 Modbus-RTU Communications Protocol.............................................................................64
4.2 The ENVIS Program................................................................................................................................. 64
4.3 Embedded Webserver.............................................................................................................................. 66
5. EXAMPLES O CONNECTIONS.....................................67
6. TECHNICAL SPECI ICATIONS.......................................73
7. MAINTENANCE, SERVICE..............................................81
4

SMV / SMP / SMVQ / SMPQ
1. General
This manual comprises description of SMV, SMP, SMVQ and SMPQ multifunctional panel meters and
power quality analyzers. All the instrument models share the same measuring & evaluating engine a
their characteristics are as follows :
•SMV – basic model with LED display
•SMP – same parameters and options as SMV, but with high resolution LCD display and
enhanced display capabilities, including day/week graphs, waveforms, phasors,harmonic
charts, status informations etc.
•SMPQ – the enhanced model with improved precision of current, power and energy
measurement, inter-harmonics and flicker severity indexes, voltage events and weekly
evaluation of power quality (EN 50160)
1.1 Common features
Standard Measurement Principles
•evaluation of electrical parameters in energy distribution systems in compliance with IEC
61000-4-30 ed. 2 class S
•four voltage inputs ( U1, U2, U3, UN )
•three ( I1, I2, I3 ; “33”-models ) or four ( I1, I2, I3, IN ; “44”-models ) current inputs
•measuring of electric quantities in three phase (from three- to five-wire) networks of nominal
voltage up to 400V AC (or up to 130 V AC for ”100”-models) directly, or via voltage
transformers
•current signal connection :
•standard „X/5A“ option models … 5A and 1A nominal current inputs
•„F“ option models … B3000/1000-line flexible Rogowski current sensors inputs
•„S“ option models … JC-line miniature split core current transformers input
•„P“ option models … JP-line miniature through-hole current transformers input
•sampling rate 128 / 96 samples/period, 10 / 12 periods continuous measurement cycle ( ~200
ms at 50 / 60 Hz ), gap-less
•selection of aggregation intervals from 200 ms/1 second up to 24 hours
•data flagging concept that eliminates double evaluation of critical events
•fixed window / floating window / thermal average values
•harmonic components up to 63rd according to IEC 61000-4-7 ed.2
•interharmonic components ( SMVQ/SMPQ only )
•digital flicker meter according IEC 61000-4-15
5

SMV / SMP / SMVQ / SMPQ
Electricity Meter
•four-quadrant three tariff electricity meter
•single phase and three phase energies
•maximum of average active power values ( power demand ) of current / last month and total
•automated electricity meter readings at preselected time intervals
Advanced Datalogging Capabilities
•high memory capacity for recording of aggregated measurement values
•maximum and minimum average values including timestamps
•day profiles (detailed day long record) at preselected date and at the day with maximum
demand
•optional voltage events evaluation and record ( firmware module VE; standard at the
SMVQ/SMPQ ), ripple control signal measurement ( RCS module ) and voltage event
oscillogram record ( GO module )
ully Configurable Inputs and Outputs for Control
•two configurable alarm LEDs on the front side panel
•two optional configurable relays or pulse outputs
•optional single digital input for time synchronization, tariff selection or for status monitoring
•optional universal analog input ( passive current loop 20 mA ) or the Pt100 temperature
sensor input
Communication Options / Data Acquisition
•built-in USB 2.0 communication port for fast data acquisition, configuration and firmware
upgrades
•proprietary protocol with free data acquisition software ENVIS
•optional remote communication interface ( RS 232 / RS 485 / Ethernet )
•MODBUS RTU and MODBUS TCP for simple integration with third party SCADA software
•embedded webserver ( for instruments with Ethernet interface )
•optional accessories :
•RS232/RS485 and USB/RS485 interface converters
•external GPS real time receiver for time synchronization via remote comm. Interface
6

SMV / SMP / SMVQ / SMPQ
2. Brief Description
This chapter provides a brief description of connection and basic operation of the instruments in a
typical installation. A detailed instrument description of all its features and connection possibilities
follows.
2.1 Instrument Connection
The instruments of the SMV / SMP / SMVQ / SMPQ series belong to equipment class I, therefore it is
absolutely necessary to connect the PE protective conductor to the PE terminal of the
instrument ! The recommended cross section of the protective conductor is 2,5 ÷ 4,0 mm2, loop with
diameter of 4,3 mm ( M4 terminal ).
It is necessary to connect an auxiliary supply voltage in the range as declared in technical
specifications table to the terminals AV1 ( L ) and AV2 ( N ). In case of DC supply voltage the polarity
of connection is generally free, but for maximum electromagnetic compatibility the grounded pole
should be connected to the terminal AV2.
The supply voltage must be connected via a disconnecting device ( switch - see installation diagram ).
It must be situated directly at the instrument and must be easily accessible by the operator. The
disconnecting device must be labelled as the disconnecting device of the equipment. A circuit breaker
at the nominal value of 1A may be used for the disconnecting device; however its function and
position must be clearly marked (symbols „O" and „I" according to EN 61010 - 1).
Fig. 2.1: T pical star (4Y) connection, mains 3 x 230/400 V
Measured phase-to-neutral voltages and neutral voltage (measured towards to the PE ) connect to
terminals VOLTAGE / N, U1, U2 and U3. Measured voltages must be protected, e.g. by 1A fuse.
Current signals from the current transformers at the nominal value of 5 or 1 A AC must be connected
to a pair of terminals CURRENT / I1k, I1l, I2k, I2l, I3k, I3l, or INk, INl. It is necessary to observe their
polarity (terminals k, l). Examples of other connections are mentioned below in the manual.
The maximum cross section of the conductors to the terminal panels is 2,5 mm2.
7

SMV / SMP / SMVQ / SMPQ
2.2 SMV / SMVQ Instrument Setup
When switching on the power supply, the instrument will perform a display test and then will display
the code „ Init", firmware release number and a group of measured values, e.g. phase voltages U1, U2,
U3 (or UN). The information is shown on the display as follows, for example:
In this case the LED- diode VLN indicates the type of displayed quantities, i.e. phase voltages. The
instantaneous measured values in phases L1, L2 and L3 can be viewed in the first three rows. In the
fourth row the value of voltage UN is displayed.
To display the real values of voltages, currents and other quantities, the instrument must be preset.
Setup of the instrument is stated by specifications, such as for example the type of measured voltage
[direct measuring or via metering voltage transformers (VT) and their conversions], the method of
voltage and current connection (star, delta, Aron ), or the conversion metering current transformers
(CT) etc. The summary of the basic parameters is stated in the table below.
Generally, besides nominal frequency ( fNOM , parameter P.03/3) it is only necessary to adjust the CT
conversion. Assuming that the conversion of used CT for inputs of current L1 to L3 is 750/5 A. To edit
the parameters, enter by pressing and holding the ► button (about 6 s). The display will show the
parameter P.00 (=lock). Another (short) touch of the ► button will switch to the group of parameters
P.01, with conversions of the current transformers. A flashing specification in the 2nd row designates
the actual selected parameter, which is the nominal secondary current of the CT. To keep the value of
5A, press ► and switch over to the next parameter in the third row. For example value 500 will start
flashing, which is the preset nominal primary current of the CT. This value can be gradually increased
by touches of the ▲button to 750 A.
Finally, to finish editing the parameters, press and hold the ► button again for about 6 sec. and the
instrument will get back to the display of measured values.
8
…..
SMV 44
VLL
VLN
A
W
var
VA
PF
cos
THD
har
m
En1
p
En3
p
Pav
Hz, i
USB
inIt
1780
k
M
k
M
inst.
av
max
.
min
time
SMV 44
VLL
VLN
A
W
var
VA
PF
cos
THD
har
m
En1
p
En3
p
Pav
Hz, i
USB
229
231
230
0.0
k
M
k
M
inst.
av
max
.
min
time
SMV 44
VLL
VLN
A
W
var
VA
PF
cos
THD
har
m
En1
p
En3
p
Pav
Hz, i
USB
0
P.00
k
M
k
M
inst.
av
max
.
min
time
►
lon
►
SMV 44
VLL
VLN
A
W
var
VA
PF
cos
THD
har
m
En1
p
En3
p
Pav
Hz, i
USB
5
P.01
500
500
k
M
k
M
inst.
av
max
.
min
time ►
SMV 44
VLL
VLN
A
W
var
VA
PF
cos
THD
har
m
En1
p
En3
p
Pav
Hz, i
USB
5
P.01
500
500
k
M
k
M
inst.
av
max
.
min
time
▲
SMV 44
VLL
VLN
A
W
var
VA
PF
cos
THD
har
m
En1
p
En3
p
Pav
Hz, i
USB
5
P.01
600
500
k
M
k
M
inst.
av
max
.
min
time ▲
SMV 44
VLL
VLN
A
W
var
VA
PF
cos
THD
har
m
En1
p
En3
p
Pav
Hz, i
USB
5
P.01
750
500
k
M
k
M
inst.
av
max
.
min
time
SMV 44
VLL
VLN
A
W
var
VA
PF
cos
THD
har
m
En1
p
En3
p
Pav
Hz, i
USB
230
229
228
0.0
k
M
k
M
inst.
av
max
.
min
time
►
lon

SMV / SMP / SMVQ / SMPQ
Other basic parameters can be edited in a similar way. Apart from these basic parameters (see
Tab.2.1) the instrument also includes a row of other parameters – their description is stated in
following chapters.
Tab.2.1: SMV - Summar of the basic parameters
Par. Row Description Range of adjustment Default
setting
P.00 2 lock 0(unlocked) / 1(locked) 0
P.01
2 nom . value of secondary CT 1 A / 5 A 5
3 nom . val. primary CT for I1 ÷ I31 ÷ 9900 A 5
4 nom . val. primary CT for IN1 ÷ 9900 A 5
P.02
2method of voltage connection – directly
or via VT - - - / 100 - - -
3 nom. val. of primary VT for U1 ÷ U30.1 ÷ 400 kV - - -
4 nom. val. of primary VT for UN0.1 ÷ 400 kV - - -
P.03 2 type of connection of U and I 3- Y / 3- D / 4-Y 3-Y
3 nominal frequency fNOM 50 / 60 Hz 50
P.04
2 display refresh cycle (in mains cycles ) 20 ÷ 200 mains cycles 30
3 resolution of displayed values 3 / 4 significant figures 4
4 display brightness 0 ÷ 3 3
P.05
2 U / I averaging method FIxed / FLoating / THermal FL
3 U / I averaging period 1 sec ÷ 60 mins 1 min
4 U / I average autoclear period NO / 1Day / 7Days / 1Month / 1Year NO
P.06
2 P / Q / S averaging method FIxed / FLoating / THermal FL
3 P / Q / S averaging period 1 sec ÷ 60 mins 15 mins
4 P / Q/ S average autoclear period NO / 1Day / 7Days / 1Month / 1Year NO
P.07 2 PavgE (el. meter group) aver. method Fixed / Floating FL
3 PavgE (el. meter group) averaging period 1 min ÷ 60 mins 15 mins
P.08
2 time zone shift -12 ÷ 13 hours 1
3 daylight saving NO / YES YES
4 time synchronization NO / mains Freq. / Comm.link / PPM NO
2 local time – DD.MM
P.09 3 local time – YYYY
4 local time – HH.MM
P.20
*)
2 remote communication rate 4.8 ÷ 215 kBd 9,6
3 remote communication address 1 ÷ 252 1
4 remote communication protocol 0 / 1-n / 1-O / 1-E / TS 0
P.20
)
2 remote comm. – IP address xxx.xxx.xxx.xxx 10.0.0.1
3 remote comm. - subnet mask xxx.xxx.xxx.xxx 255.255.
255.0
4 remote comm. - default gateway xxx.xxx.xxx.xxx 10.0.0.138
P.21
)
2 remote comm. - KMB-port 0 ÷ 65535 2101
3 remote comm. - web-port 0 ÷ 65535 80
4 remote comm. - Modbus-port 0 ÷ 65535 502
*)... for instruments with RS232 / RS485 remote comm. interface only
)... for instruments with Ethernet remote comm. interface only
2.2.1 Locking and Unlocking of the Instrument
The instruments are supplied in an „unlocked" state (parameter P.00 = 0), that means the basic
parameters can be randomly edited, following the procedure mentioned above. After putting it into
operation, the parameters editing can be „locked" and the instrument can be protected from possible
9

SMV / SMP / SMVQ / SMPQ
unqualified manipulation, by simply switching the parameter P.00 to the position 1(=locked).
Unlocking the instrument requires this particular procedure: following the above - mentioned method,
switch the instrument into the parameters display and by pressing the ▲ and ▼buttons find the
parameter P.00 – value 1 in the second row indicates the locked instrument. At the same time press
the ▲and ▼buttons - randomly selected number will appear in the third row. If it is odd, press ▲ and
if even, press ▼. Repeat this procedure until the parameter value in the 2nd row switches to the value
0, i.e. the „unlock" status. After that, any parameter can be found and adjusted.
2.3 SMV / SMVQ Instrument Operation
After activation of supply voltage, the instrument accomplishes internal diagnostics, updating of
internal database of measured data and then it starts to measure and display the instantaneous
measured values ( inst. ).
The row of LED-diodes on the left side indicate the type of displayed quantities - their summary is
stated in the chart below. The LED diodes k and M determine a multiplier (k=kilo, M=mega, kM=giga)
separately for specifications in rows 1÷3 and extra for row 4 (e.g. when displaying voltage, the diode k
indicates, that the specifications are in kV etc.).
Particular measured quantities can be changed over by using the ▲and ▼buttons. The buttons
►and ◄ can switch the type of displayed quantity: instant (inst.), average (avg.), maximum of
average (max.) or minimum of average (min.), except the quantities THD,harm and EN – these only
show instantaneous values.
Values avg. are evaluated with method and the time window according to parameters P.05 ( for U/I-
group ), P.06 ( for P/Q/S-group ), and P.07 (for PavgE of electricity meter group). Values max./min. are
maximum/mimimum values of the avg.-values reached since last clearing. You can check date & time
of last clearing of each group by listing to window time, which is indicated as Clrt in the 4th row. To
clear max./min. registered values of appropriate group manually, while in the appropriate Clrt -time
window press the ►and ◄ simultaneously and the date/time value starts flashing. Then confirm
clearing with the button ▼( pressing of different button will not clear anything ). Depending on the
listed average values group, only either U/I-group or P/Q/S-group average max/mins or PavgmaxE of
electricity meter group are cleared. If the instrument is locked, clearing is not possible.
In addition, the buttons ►and ◄ can display conditions of the
internal time circuit ( local time ) and immediate conditions of digital
inputs/outputs and so-called error code ( I/O,Err ).
At the I/O,Err.-window actual status of a digital input ( 1st row ) and
two digital outputs (2nd and 3rd row) are displayed. Active state
(closed) is indicated as “1”, inactive (open) as “0”.
At the 4th row the instrument error code is displayed. The E-00 code
means no errors. Other codes can indicate some instrument's
hardware problem – in such case contact the service organization.
The last two LEDs are alarm LEDs A1 and A2. Their function is programmable in the same way as
digital outputs.
Other comments on measured quantities:
•VLL, VLN, A : line voltage, phase voltage and phase current real effective values (TRMS). When the
measurement input is overloaded, the whole specification flashes.
•W, Var, VA : supply of active power or leading reactive power indicated as negative.
•P : actual power factor (or total - T.P.F., λ lambda).
•cos : power factor of the fundamental component. Displayed in four quadrants. Capacitance
character of the power factor indicated by the letter „c"; furthermore, supply of active power
indicated as negative.
10
SMV 44
VLL
VLN
A
W
var
VA
PF
cos
THD
harm
En1p
En3p
Pav E
Hz, i
USB
O1-0
I-0
02-1
E 00
k
M
k
M
inst.
av .
max.
.
min
time
min.
time
minI/O, Err.
A1
A2