Analyst 3P: Power Quality Analyser
Analyst 3P: Power Quality Analyser
Analyst 3P: Power Quality Analyser
Gebrauchsanleitung
Manuel d’utilisation Analyst 3P
LEM HEME
1 Penketh Place Skelmersdale,
Lancs. WN8 9QX
UK
Tel. +44 (0) 1695 720 535
Fax +44 (0) 1695 50279
E-Mail: lhe@lem.com
Internet: http://www.lem.com
Article number: EO 0620GDF
Version number: Revision E
Date: 08 / 2004
2 Analyst 3P
EO 0620GDF Rev. E
Contents
Table of Contents
1. General ............................................................................................................... 5
1.1 Power Quality Analysis............................................................................ 5
1.2 Safety Instructions................................................................................... 6
1.3 Standard and Optional Accessories ........................................................ 9
1.4 Software and Information CD ................................................................ 10
2. Putting your Analyser into Operation............................................................ 11
2.1 Accessories ........................................................................................... 11
2.2 Carrying Belt ......................................................................................... 11
2.3 Control Elements, Display ..................................................................... 12
2.4 Basic Adjustments (Menu) .................................................................... 15
2.4.1 Menu Structuring ................................................................................... 15
2.4.2 Parameter Configuration ....................................................................... 18
3. Measuring Functions ...................................................................................... 21
3.1 Overview ............................................................................................... 21
3.2 Connecting the Analyser ....................................................................... 22
3.3 Volts / Amps / Hertz............................................................................... 24
3.4 Power .................................................................................................... 26
3.5 Events ................................................................................................... 29
3.6 Harmonics ............................................................................................. 31
3.7 Waveforms ............................................................................................ 33
4. Analyst 3P Software ........................................................................................ 34
4.1 Installing Analyst 3P Software ............................................................... 34
4.2 Starting PQLog View ............................................................................. 34
4.3 Using PQLogView ................................................................................. 35
4.4 Recording measurement data with ANALYST 3P ................................. 36
5. Specific Data of the Analyser ......................................................................... 39
5.1 Power Supply and Replacing the Battery Pack ..................................... 39
5.2 Maintenance and Warranty ................................................................... 41
5.3 Calculation of the Measured Variables.................................................. 42
5.4 Technical Specification.......................................................................... 44
Analyst 3P 3
EO 0620GDF Rev. E
Contents
4 Analyst 3P
EO 0620GDF Rev. E
General
1. General
It is necessary to check the supply voltage regularly in order to ensure the perfect
functioning and working of the growing number of electronic devices. In connection
with the liberalisation of the energy market "Voltage Quality" is also becoming more
important for energy producers and final customers.
This device has been optimised for the fast identification of disturbances in the
power network.
With the help of the clear representation of all relevant parameters, it becomes
simple to detect systematic network problems.
Therefore the analyser was developed in particular for plant electricians and
electrical installers, who have an important role during the recovery of disturbances
of the power distribution system.
Your Analyst 3P is equipped with Flash Technology. This enables you to perform
firmware updates. Please use the Windows Flash Update utility to do this. You will
find it on the Analyst CD-ROM.
Please find the most recent firmware - which is compatible to your instrument's
hardware - on the LEM Homepage.
http://www.lem.com
Analyst 3P 5
EO 0620GDF Rev. E
General
Warning
Warning
Important
6 Analyst 3P
EO 0620GDF Rev. E
General
Warning
Analyst 3P 7
EO 0620GDF Rev. E
General
Symbols:
Double insulation
Warning of danger (read according to IEC 61010-1;
the documentation) Protective Class II;
600V CAT III
DC voltage
Qualified Personnel
8 Analyst 3P
EO 0620GDF Rev. E
General
Analyst 3P 9
EO 0620GDF Rev. E
General
Please pay attention upon delivery. Should your analyser have been
damaged during transport you have to call this to the attention of the
deliverer immediately. The damage must also be noted in the delivery
documents.
In case of damage, please send your device back to us but only with the
original packaging.
Please check all the accessories for completeness according to the
previous table.
10 Analyst 3P
EO 0620GDF Rev. E
Putting your Analyser into Operation
2.1 Accessories
Optional accessories like LEM-Flex or current clamps will be detected by
the device via an auto-detection feature, which is activated once the device
is turned on.
It is important to turn the device on once accessories have been changed
to avoid possible discrepancies between the set accessories and the newly
connected accessories.
Analyst 3P 11
EO 0620GDF Rev. E
Putting your Analyser into Operation
Put your device into operation by turning the rotary switch in clockwise
direction. In the LC display (function display) you can read the selected
measuring function for each case.
Display Symbols
Menu
Menu
ON-/OFF Esc
12 Analyst 3P
EO 0620GDF Rev. E
Putting your Analyser into Operation
Note:
The symbols occurring in this operating instruction ´ ´ and ´ ´ correspond
to the respective directions of the cursor keys.
Analyst 3P 13
EO 0620GDF Rev. E
Putting your Analyser into Operation
14 Analyst 3P
EO 0620GDF Rev. E
Putting your Analyser into Operation
Connections:
Battery
RS232 interface compartment DC-adapter
RS-232 Interface:
The serial RS232 interface is used for communication with an external PC.
The stored measurement data can be read in and analysed comfortably.
Through this interface a firmware update can be executed.
All basic adjustments of your measuring instrument are to be made over the
main menu. You can call this at any time with the key: Menu
Esc
. If you push it
again you will return to the previous display.
Analyst 3P 15
EO 0620GDF Rev. E
Putting your Analyser into Operation
MENU
Recording Adjustments
Averaging Time
Event Threshold
Memories View / Delete
Memory loc. 01..10
Memory loc. 11..20
Memory loc. 21..30
View Autoscreen Memory loc. 31..40
Memory loc. 41..50
Display Contrast
16 Analyst 3P
EO 0620GDF Rev. E
Putting your Analyser into Operation
Basic Operation:
Menu
- Entering the main menu: Esc
<Enter> go to marked
submenu
<ESC> back to the previous
menu level
Changing parameters:
- The displayed parameters can be modified with the arrow keys (in
levels of the preset values).
- If values are not preset you can modify them by using the cursor keys.
With ´ ´ you can select the decimal place and with ´ ´ you can
modify the number.
Note:
Selected parameters are stored in the memory with <Enter>. With
<ESC> the adjusted value can be rejected at any time.
Analyst 3P 17
EO 0620GDF Rev. E
Putting your Analyser into Operation
- View/Delete Screenshots
Select one of the saved screenshots. Press
ENTER to view it. All screenshots include the
date and time and the measuring mode, in
which they were saved. Each page lists 10
events.
Use the to change the page.
18 Analyst 3P
EO 0620GDF Rev. E
Putting your Analyser into Operation
- Display Contrast
Select the display contrast optimal for you with ´ ´.
- Instrument Set-Up
In this menu option you can make adjustments in the submenu for:
- Current probes - Version number
- Voltage probes - Background lighting
Current Probes
If you do not use standard accessories,
which are automatically detected during
start-up, you can make the necessary
adjustments here. Select one of the given
transducer types with “Type”. Enter the
transducer factor, through selection of a
given value or by input of a customized
value, e.g.: for a current probe displaying
0.5V per 5A this equals 100mV/1A.
Therefore, 100 should be entered.
Analyst 3P 19
EO 0620GDF Rev. E
Putting your Analyser into Operation
Voltage Transformers
If you use voltage transformers, select transducer factors with ENTER. Press
the key and enter any transformer factor with .
For transducer factor details see information on the voltage transformer.
Backlight
Here, you have the possibility to select whether the background lighting is to
deactivate itself automatically after 30 seconds or whether you want to
always deactivate it manually after switching it on with the ´ ´ key.
Note:
If the battery is in use, use the background lighting only if necessary. This
will ensure a longer battery life time.
- Power Network
Select the used power network
topology (Y or Δ) here. Likewise you
can determine the nominal phase
voltage of the power network, its
nominal frequency and the current
range.
- Language
Here you can select the language with which you want to operate.
20 Analyst 3P
EO 0620GDF Rev. E
Measuring Functions
3. Measuring Functions
3.1 Overview
Now we will give you a short overview of the different measuring
procedures for the exact analysis of the power system, which is to be
examined.
This function displays the voltage and current values at the same time, as
well as their frequency and the neutral-conductor current. You can also use
this measuring function to get an overview of these values, before you
analyse the signal in detail by means of the remaining functions.
Waveforms
This measuring function shows the voltages, currents and the ϕ angle in
"oscilloscope representation“ as well as their instantaneous values at the
cursor position. With this function you get a clear representation of current
and voltage waveforms and their distortions.
Harmonics
Power
This function indicates the values of the transferred power. At the same
time you can measure active power, reactive power, apparent power,
distortion power and the appropriate power factor. You can also view the
active and reactive power energy.
Analyst 3P 21
EO 0620GDF Rev. E
Measuring Functions
Events
Events are voltage dips, swells and interruptions. This measuring mode
automatically records all events for later evaluation. The threshold values
for starting the recording are freely configurable in the menu.
Voltage: Current:
Mains line Test leads Mains line Test leads
L L1 L1 L1
L L2 not connected L2
L L3 not connected L3
N N not connected N
22 Analyst 3P
EO 0620GDF Rev. E
Measuring Functions
Voltage: Current:
Analyst 3P 23
EO 0620GDF Rev. E
Measuring Functions
In this mode you can measure values for each phase (L1, L2, L3) of
- Voltage (U)
- Current (I)
- Frequency (F)
- Neutral-conductor current (In)
You can determine and store the values. It is also possible to record the
values with the recorder function.
Measurement or calculation of the neutral-conductor current is optional.
Recording
In Record mode, the following values are recorded for every phase (L1, L2,
L3)
• Voltage (U) and
• Current (I) and the value of the
• Frequency (F)
These values can be analysed reported and exported with the PQLogView
software.
Measurement
If you select this measuring mode you will see the following display:
-minimum of values
-maximum of values and
-frequency or neutral-
conductor current
24 Analyst 3P
EO 0620GDF Rev. E
Measuring Functions
With <Hold/Run> the actual values “freeze” and the measurement is stopped
or started again.
Save:
With <Save/Enter> you will get a screenshot and thus store the actual
picture of the display in the memory location subsequently shown.
Recorder Function:
With <Record/Measure> you can start the recorder function or you can get back
into the measuring mode. Before the start, the maximum recording time is
indicated and you can change this value with <Esc> followed by entering using
the <Cursor> key.
Changes in the averaging time, cause corresponding changes in the recording
time of the measurement (double averaging time = double recording time).
When the recorder graphics reach the screen margin during recording, a
picture of this screen is saved.
The display is then deleted and the recording is continued. Up to 6 auto
screens are saved in the course of a recording. The saved screenshots can
be retrieved via the "View Auto Screenshots" menu.
Note:
Do not forget to operate the device with the DC adapter during recording in order
to prevent shutdown caused by low battery.
Note:
The Cursor functions are only available in the ”Hold“ mode.
Analyst 3P 25
EO 0620GDF Rev. E
Measuring Functions
3.4 Power
In this measuring mode you can get the following values for each phase
(L1, L2, L3):
- Power (P) in W (for each phase and its sum Ptot)
- Reactive power (Q) in var
- Apparent power (S) in VA
- Distortion power (D) in VA
- Power factor (PF)
- cosϕ
- Active energy (EP) in kWh
- Reactive energy (EQ) in kvarh
Measurement:
You can determine the instantaneous values and store them. Further it is
also possible to record the values with the recorder function.
If you select this measurement mode you will get the following display:
Switch between the
individual phases (detailed
view: min- max- values and
distorted power
Switch between the
representation modes:
- P, S and PF
- P, S and Q
- P, S and D
- P, S and EP
- P, S and EQ
- P, S and cosϕ
This function is also active
in the detail view of the
individual phases.
Capacitor or inductance symbols issue information about capacitive or
inductive reactive power.
With <Hold/Run> the values displayed at the moment “freeze” and the
measurement is stopped or started again.
26 Analyst 3P
EO 0620GDF Rev. E
Measuring Functions
Δ - Topology:
By switching the network topology from star to delta, the voltages and
currents I L1 , I L3 , I L2 are calculated, measured and displayed.
When calculating the power, selecting the delta connection will use the
Aron measuring circuit for the calculation.
The neutral conductor may be connected, however, it does not influence
the measurement even in open state. If no neutral conductor is connected,
a virtual star point is formed via symmetrization resistors.
In the Aron circuit, phase L2 becomes the return line for L1 and L3 causing
the current I L2 to be obtained as the sum of the two negative currents I L1 I
L3 .
i2(t)=-[ i1(t)+ i3(t)]
In general, the instantaneous total power is:
Î Ptot(t)=u1(t) i1(t)+ u2(t) i2(t)+ u3(t) i3(t)
Î Ptot(t)= u1(t) i1(t)- u2 [i1(t)+ i3(t)]+ u3(t)i3(t)=
=[u1(t)- u2(t)] i1(t)+[ u3(t)-u2(t)]i3(t)
However, since the voltages between the lines of a poly-phase are
measured in the delta connection, the following formula results for the total
power:
Ptot(t)= u12(t) i1(t)+u32 i3(t)
Integration via a period results in:
Ptot= U12 I1 cos(U12 ,I1)+U32 I3 cos(U32 ,I3)
Therefore, the total power corresponds to the total power of the star
connection. For control purposes, it can be derived from the sum of the
powers P12 and P31.
Since I L2 is only calculated as an auxiliary value and is not measured, P23
must be set to zero (as per definition), because it does not exist in the Aron
circuit.
The power factor PF has no physical meaning in the Aron circuit, because
one would compare the current to the voltage between the lines of a poly-
phase system. Reactive and apparent power should be understood as pure
computing values and have no physical meaning.
The exact formulae for calculating the active power are given in the section
Formulae.
Save:
With <Save/Enter> you will get a screenshot and thus store the actual
display in the memory location shown subsequently.
Recorder Function:
With <Record/Measure> you can start the recorder function or you can get back
into the measuring mode. Before the start, maximum recording time is indicated
and you can change this value with <cursor>.
Analyst 3P 27
EO 0620GDF Rev. E
Measuring Functions
Note:
Do not forget to operate the device with the DC adapter during recording in order
to prevent shutdown caused by low battery.
Active and reactive energy are not shown in the recorder function.
Recording
In Record mode, the following values are recorded for every phase (L1, L2,
L3)
• Active power (P)
• Apparent power (S)
• Reactive power (Q)
• Power factor (PF)
• Cosine (cosϕ)
• Power of distortion (D)
These values can be analysed reported and exported with the PQLogView
software.
Note:
The cursor functions are only available in the ”Hold“ mode.
28 Analyst 3P
EO 0620GDF Rev. E
Measuring Functions
3.5 Events
This measuring mode records the voltage of every phase (L1, L2, L3) incase
of voltage dips, swells or interruptions (recorder function).
Measurement:
This function exclusively works with the recorder function.
Before you start the measurement, select the desired threshold value with
<Menu/Esc> (under recording adjustments). After the measurement has
started the following message appears on the display.
. . . waiting for events
The device is now in the trigger mode. If an event on one of the phases occurs,
the recording is started automatically and lasts for 4 minutes. The MIN and
MAX values of the half-cycle effective values are shown as waves. The
screenshots recorded by this method are saved as individual pictures and can
be viewed later, or the data can be displayed with the PQLogView software. A
total of 999 events can be recorded. In the LC display the phase and the
number of recordings are displayed.
With <Hold/Run> you can stop/start the measurement or you can also start
a new measurement.
Save:
With <Save/Enter> you will get a screenshot and thus store the actual
display in the memory location shown subsequently.
Recording:
Events recordings may be downloaded with the PQLogView software.
Analyst 3P 29
EO 0620GDF Rev. E
Measuring Functions
30 Analyst 3P
EO 0620GDF Rev. E
Measuring Functions
3.6 Harmonics
In this measuring mode you can determine the Harmonics H1 to H40 for all
phases (L1, L2, L3) of:
- Voltage (U)
- Current (I)
Measurement
When selecting this measuring mode with the rotary switch the harmonics
are immediately and clearly represented on the LC display as follows.
Analyst 3P 31
EO 0620GDF Rev. E
Measuring Functions
Recorder function:
<RRecord/Measure> starts the recorder function or goes from the recorder
function back to the measurement mode, respectively.
Switching between
individual phases
Switching between
U and I
You can exit a measurement with HOLD, however, the measurement cannot
be continued afterwards in order to evaluate the measurement values of the
recorder function:
Use the <CCursor> key. Using the cursors keys, select the respective time and
read the corresponding measurement value. Repeated pressing of the cursor
keys sets a reference cursor.
Recording:
In Record mode, the following values are recorded for every phase (L1, L2, L3)
• Voltages (U) and
• Currents (I)
• THD U
• THD I
• Values of uneven harmonics from 1-25 for U and I
• Frequency
These values can be analysed reported and exported with the PQLogView
software.
Save:
With <Save/Enter> you will get a screenshot and thus store the actual
display in the memory location shown subsequently.
32 Analyst 3P
EO 0620GDF Rev. E
Measuring Functions
3.7 Waveforms
Measurement
If you select the measuring mode with the rotary switch the following figure
appears on the display. The three phase voltages and current values are
plotted for the time of one period.
Analyst 3P 33
EO 0620GDF Rev. E
Analyst 3P Software
4. Analyst 3P Software
Automated Download, Analysis and Reporting in one simple to use
package.
PQLog View is a powerful application designed to help the user get the
most from the Analyst 3P Power Quality Monitor.
34 Analyst 3P
EO 0620GDF Rev. E
Analyst 3P Software
In PQLog View, every file has its own window within the main one. This
allows files to be open simultaneously for comparison. Each of these
windows has tab markers, which are used to select different viewing modes
of the recorded data.
Analyst 3P 35
EO 0620GDF Rev. E
Analyst 3P Software
36 Analyst 3P
EO 0620GDF Rev. E
Analyst 3P Software
Events
Voltages UL1, UL2, UL3, MIN, MAX of 10-ms RMS
values
Number of events per phase
Analyst 3P 37
EO 0620GDF Rev. E
Analyst 3P Software
Harmonics
Voltages UL1, UL2, UL3,
AVG, MIN, MAX rms values
Currents I1, I2, I3, In
AVG, MIN, MAX rms values
THD I L1, L2, L3, In,
AVG, MIN, MAX rms values
THD U L1, L2, L3, AVG, MIN, MAX rms values
Values of uneven harmonics from the 1st -25th
order for U1, U2, U3, I1, I2, I3 ,In, AVG, MIN, MAX
rms values
Frequency, AVG, MIN, MAX values
38 Analyst 3P
EO 0620GDF Rev. E
Specific Data of the Analyser
Analyst 3P 39
EO 0620GDF Rev. E
Specific Data of the Analyser
1 2 3
Battery Pack
Note:
If you replace the battery please use original spare parts only – see
section “Standard and Optional Accessories”.
40 Analyst 3P
EO 0620GDF Rev. E
Specific Data of the Analyser
Calibration
As an additional service we offer the regular examination and calibration of
your device. On request we also issue company-owned test certificates (traceable
to national standards) or test certificates of the UK calibration service (UKAS).
Storage
If the device is stored for longer time or is not in use for longer time, you should
charge the battery at least once in six months.
Warranty
2 Years:
- Warranty on the accuracy of the device
- Free repair, if the device shows a functional fault although it is used
appropriately.
This warranty does not apply, if damages are due to false handling of the
device or to excessive overload.
Note:
This manual does not contain all the detail information concerning your
Analyser. In order to keep the manual short and clear, not every case of
application, operation or maintenance imaginable could be included.
Analyst 3P 41
EO 0620GDF Rev. E
Specific Data of the Analyser
1
T∫
U RMS = u ² dt rms value of voltages
1
T∫
I RMS = i ² dt rms value of currents
Wave form
The angle given in the waveform function is based on the following formula.
⎛ ⎞
⎜ P1 ⎟
ϕ = arctan⎜ ⎟
Angle between
⎜ P2 +Q2 ⎟ Q1..reactive power of first harmonic
⎝ 1 1 ⎠ P1.. active power of first harmonic
42 Analyst 3P
EO 0620GDF Rev. E
Specific Data of the Analyser
Power measurements
40
P = ∑ U k × I k × cos( ϕ k ) active power (200ms average values)
k =1 Uk, Ik, ϕk .. values of harmonics
M
1
PM =
M
∑P
i =1
i
active power over average interval
Pi ...single 200ms values
M ...number of values
M
1
Q=
M
∑Q
i =1
i
reactive power over average time
S =U ×I apparent power
P
PF = λ = power factor
S
D = S 2 − P2 − Q2 distortion power
P1
cos ϕ = cosine cosϕ
P12 + Q12
Note:
The distortion power is > zero if the waveform of current is different from the voltage
waveform.
40
∑ (U h )2
THD = h=2
×100% Total Harmonic Distortion
U1 U1 . . . RMS of the fundamental
Uh . . . RMS of the h-th harmonic
Analyst 3P 43
EO 0620GDF Rev. E
Specific Data of the Analyser
44 Analyst 3P
EO 0620GDF Rev. E
Specific Data of the Analyser
Safety:
Safety: IEC 61010-1 600V CAT III, double or enforced
insulation, pollution degree 2
Protection: IP65; EN60529 (refers only to the main housing
without the accumulator compartment)
Specifications:
Rms values are measured with a 20-ms resolution.
V-rms Y measurement
Measuring range: 57 / 66 / 110 / 120 / 127 / 220 / 230/ 240 / 260 / 277 / 347
/ 380 / 400 / 417 / 480 V AC
Intrinsic error : ±(0.2% of m. v. + 5 digit)
Operating error : ±(0.5% of m. v.+ 10 digit)
Resolution: 0.1 V
V-rms Δ measurement
Measuring range: 100 / 115 / 190 /208 / 220 / 380 / 400 / 415 / 450 / 480 /
600 / 660 / 690 / 720 / 830 V AC
Intrinsic error : ±(0.2% of m. v. + 5 digit)
Operating error : ±(0.5% of m. v.+ 10 digit)
Resolution: 0.1 V
A-rms measurement
LEM-flex and current probes with voltage output are supported. All current
probes must correspond to 600V / CAT III
LEM~flex IN ranges: 15 / 150 / 3000 A rms (at sine)
Current clamp ranges: 50 / 500 mV AC
Resolution: 0.01 A
Ranges 150 / 3000 A and 50 / 500 mV
Intrinsic error : ±(0.5% of m. v. + 10 digit)
Operating error : ±(1% of m. v.+ 10 digit)
Range 15 A
Ranges 15 A and 5 mV
Intrinsic error : ±(0.5% of m. v. + 20 digit)
Operating error : ±(1% of m. v.+ 20 digit)
The errors of the current probes are not considered.
By using LEM~flex:
LEM~flex measuring error:±(2% of m. v. + 10 digit)
Position influence: ±(3% of m. v. + 10 digit)
CF (typical): 2.83
Power measurement (P, Q, S, D)
Measuring range: see Vrms and Arms measurement
Power errors are calculated by adding the errors of voltage and current.
Additional error due to power factor PF:
Specified error x (1-IPFI)
Analyst 3P 45
EO 0620GDF Rev. E
Specific Data of the Analyser
Maximum Range with Voltage range 830V delta-connection and 3000A current
range is 2.490MW
Intrinsic error: ± (0,7 % of m.v. +15 dig)
Resolution: 1 kW
Operating error: ± (1,5 % of m.v. + 20 dig)
Typical Range with Voltage range 230V star-connection and 150A current range is
34,50kW
Intrinsic error: ± (0,7 % of m.v. +15 dig)
Resolution: 1W…10W
Operating error: ± (1,5 % of m.v. + 20 dig)
The errors of the current sensors themselves have not been considered.
PF Power Factor
Range: 0,000 to 1,000
Resolution: 0,001
Accuracy: ±1% of full scale
Frequency measurement
Measuring range: 46 Hz – 54 Hz and 56 Hz – 64 Hz
Intrinsic error : ±(0.2% of m. v. + 5 digit)
Operating error : ±(0.5% of m. v.+ 10 digit)
Resolution: 0.01 Hz
Harmonics
Measuring range: 1...40th harmonic (< 50% von Um)
Accuracy:
Um, Im, THDU, THDI: according IEC 1000-4-7, class B
Um, Im, THDU, THDI: according IEC 1000-4-7, class B
Um ≥ 3% UN 5% Um
Um < 3% UN 0.15% UN
Im ≥ 10% IN 5% Im
Im < 10% IN 0,5% IN
THDU for THD <3%: < 0.15% at UN
for THD ≥3%: < 5% at UN
THDI for THD <10%: < 0.5 % at IN
for THD ≥10%: < 5% at IN
Events
Detection of voltage dips, voltage swells and voltage interruptions with a
10-ms resolution. Due to storage reasons, the maximum number of event
recordings is 999. Measuring error of the half-period sine wave of RMS:
Intrinsic error : ±(1% of m. v. + 10 digit)
Operating error : ±(2% of m. v.+ 10 digit)
Resolution: 0.1 V
46 Analyst 3P
EO 0620GDF Rev. E
Specific Data of the Analyser
Unbalance
rms errors see V-rms specification
Phase angle errors:
Intrinsic error : ±(0,5% of m. v. + 5 digit)
Operating error : ±(1% of m. v.+ 10 digit)
Resolution: 0.1 °
Note:
When using LEM~flexes please make sure to position the
conductor opposite to the LEM~flex-lock (see right).
Analyst 3P 47
EO 0620GDF Rev. E
Printed in the EU / Gedruckt in der EU / Imprimé dans l'Union Européenne
LEM HEME
1 Penketh Place Distributor / Vertragshändler / Distributeur
Skelmersdale
Lancs. WN8 9QX
UK
Tel. +44 (0) 1695 720 535
Fax +44 (0) 1695 720 535
E-Mail: lhe@lem.com
EO 0620GDF Rev. E