Meatest M133C User manual

M133C/133Ci Electric Power/Energy Calibrator
Operation manual

M133C Electric Power/Energy Calibrator MEATEST
3 Version 30 Operation manual
Content
1Basic information.......................................................................................................................5
2Preparation for operation..........................................................................................................6
2.1 Inspecting package contents, selecting the installation location ....................................6
2.2 Power-on..............................................................................................................................7
2.3 Warm-up time.....................................................................................................................8
2.4 Replacement of fuse............................................................................................................8
2.5 Safety precautions ..............................................................................................................9
3Description of controls.............................................................................................................10
3.1 Front panel........................................................................................................................10
3.2 Rear panel.........................................................................................................................15
4Control of the calibrator ..........................................................................................................16
4.1 Selection of function.........................................................................................................16
4.2 Setting the value of output signal....................................................................................17
4.3 Connection / disconnection of output terminals............................................................18
4.4 Generation of electric power ...........................................................................................20
Setting the power in modes Pdc Basic and Pac Basic...............................................................23
Setting the power in modes Pdc High I and Pac High I (Three phase version only)................25
Setting the power in modes Pdc Extended and Pac Extended..................................................25
Setting the power in P Harmonic mode (model M133C only) .................................................27
Setting the power in P Interharmonic mode (model M133C only)...........................................29
Setting the power in P Dip/Swell mode (model M133C only).................................................31
4.5 Generation of electric energy ..........................................................................................33
Setting the energy in modes Edc Basic and Eac Basic..............................................................37
Setting the power in modes Edc High I and Eac High I (Three phase version only)................38
4.6 Generation of calibrated voltage.....................................................................................38
Setting the voltage in modes Udc Basic and Uac Basic............................................................39
4.7 Generation of calibrated current....................................................................................39
Setting the current in modes Idc Basic and Iac Basic ...............................................................41
Setting the current in modes Idc High I and Iac High I (Three phase version only).................41
5Multimeter................................................................................................................................42
5.1 Function selection.............................................................................................................42
6Calibrator setup menu (Main menu) ......................................................................................43
6.1 General Menu ...................................................................................................................43
6.2 Interface Menu .................................................................................................................44

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6.3 Calibrator Menu...............................................................................................................45
6.4 Meter Menu.......................................................................................................................48
6.5 Calibration Menu..............................................................................................................48
7Calibration mode......................................................................................................................49
7.1 Calibration principles.......................................................................................................49
7.2 Access to the calibration procedure................................................................................50
7.3 Selection of calibration type.............................................................................................51
7.4 Full calibration procedure...............................................................................................56
8Error messages .........................................................................................................................60
9Maintenance.............................................................................................................................62
10 Verification test .....................................................................................................................64
11 System control .......................................................................................................................70
11.1 IEEE488 bus properties................................................................................................70
11.2 RS232 serial line setting................................................................................................70
11.3 Command syntax...........................................................................................................71
11.4 Standard Status Data Structures...............................................................................138
12 Specification........................................................................................................................142
13 Versions & Options.............................................................................................................148
14 Accessories...........................................................................................................................148

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1Basic information
M133C Three (single) phase power calibrator is a multifunction calibrator, to be used primarily as
a standard for calibration laboratories. It can be used for calibration of any measuring instrument
which measures voltage, current, power, energy, phase and frequency. The calibrator is equipped
with a built-in multimeter, which can be used simultaneously with output functions. Transducers
of various types, regulators and sensing units can be therefore checked without the need for
additional measuring instruments.
M133C model is equipped with special functions for power line voltage analyzers testing. It can
generate calibrated harmonic and interharmonic distortion, fluctuation harmonics, flickers, ramp
signals and others.
M133Ci model is delivered without the option of harmonic/interharmonic functions.
Basic features of the calibrator include generation of calibrated AC voltage in the range of 1 V
to 600 V and DC voltage in the range of 1 V to 280 V, DC and AC current in the range of 5 mA to
30 A. Phase shift for all outputs (3x voltage and 3x current) can be set independent for each
output. The best accuracy of the calibrator is 0.025 % for voltage and 0.035 % for current. Internal
ranges (voltage 10, 30, 70, 140, 280 V and 600 Vac, current 0.3, 1, 2, 5, 10 and 30 A) are suitable
for accurate testing of power transducers. Maximum frequency range is 15 Hz to 1000 Hz.
Internal multimeter with 20 mA, 10 V and 10 kHz (0.02 % accuracy) can be used to measure
normalized signals coming from transducers.
The calibrator includes many other features which facilitate easy use. For example the possibility
to save the actual setting into the internal memory, currently displayed uncertainty of the output
signal, calibration and testing procedures etc. The concept of calibrator control and indication of
its status is based on flat luminiscent display, which provides all necessary information. The
calibrator is controlled by opening menus on the display and selection from menus. Frequently
used functions are assigned direct-control keys. The calibrator comes with standard IEEE488 bus,
RS-232 serial line and Ethernet connector, which allow the calibrator to be controlled from a PC.
The calibrator can easily fit within calibration systems featuring Power software support.
Calibrator is available in Three or Single phase version. Both versions look the same. The only
difference is that the Single phase version doesn’t contain channels 2 and 3. Single phase version
can be upgraded to Three phase version by the manufacturer.

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2Preparation for operation
2.1 Inspecting package contents, selecting the installation location
Basic package includes the following items:
M133C
Power/Energy calibrator
Power cord
Spare fuse
Operational manual
Test report
Test cable 1000V/32A –12 pcs (Three phase version), 4 pcs (Single phase version)
RS232 cable
M133C-01 High Current Adapter (Three phase version only)
The calibrator should be powered by 230/115 V –50/60 Hz mains. It is a laboratory instrument
whose parameters are guaranteed at 232 oC. Before powering on the instruments, place it on a
level surface. Do not cover the vents at the bottom side and the fan opening at the rear panel.
M133C-01 High Current Adapter (Three phase version only)
Standard part of delivery the three-
phase power calibrator is the option
M133C-01. Using this adapter all
currrent outpus are connected in
parallel and the configuration can
deliver up to 90 A in signle phase
mode.

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2.2 Power-on
Before connecting the calibrator to the mains, check the position of the mains voltage selector
located at the rear panel.
Plug one end of the power cord into the connector located at the rear panel and connect the
other end of the power cord into a wall outlet.
Switch on the mains switch located at the rear panel. Flat display is lit.
The calibrator performs internal hardware checks for 5 seconds. Configuration of the
instrument is displayed in the end of this test (connected phase channels).
- phase unit is connected and ready
N.A. - phase unit is not connected
- phase is connected, but failed
After the tests conclude, the calibrator resets to its reference state, i.e. the following parameters
are set:
Function AC power Pac Basic
Voltage range 10 V
Set value 10 V
Current range 1 A
Set value 1 A
Phase 0º
Frequency 50 Hz
Output terminals OFF
GPIB address of the calibrator is factory-preset to 2. This value is valid until the user changes
it.

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2.3 Warm-up time
The calibrator works after it is switched on and the initial checks complete. Specified parameters
are only guaranteed after the instrument warms up for 60 minutes. During this period, the
instrument cannot be calibrated. The display shows “cannot access the calibration” message if
calibration is attempted during this period.
2.4 Replacement of fuse
The calibrator includes a fuse located in the mains connector at the rear panel. Replace the fuse as
follows:
Switch off the calibrator
Remove the end of power cord from the mains connector at the rear panel.
Insert the blade of a flat screwdriver into the opening cut in the mains voltage selector and pull
out the fuse holder.
Remove the fuse and replace it with new fuse of the same rating.

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2.5 Safety precautions
The instrument has been designed in Safety Class I according to EN 61010-1. The design reflects
the requirements of A2 amendment of the standard.
Safety is ensured by the design and by the use of specific component types.
The manufacturer is not liable for the damage caused by modification of the construction or
replacement of parts with non-original ones.
Safety symbols used on the equipment
Warning, reference to the documentation
Warning - risk of electric shock
Danger - high voltage

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3Description of controls
3.1 Front panel
The front panel of the calibrator includes a TFT color display, control buttons and output
terminals. The following picture shows the control part of the front panel.
1Display buttons
There are five buttons below the display, whose meaning changes depending on the contents of the
display. These buttons usually call-up the “local Menu” (units, modes, etc.).
2Cursor buttons
Using these buttons, the cursor can be controlled within allowed limits on the display. The
keyboard includes two buttons (<, >) which allow the cursor to be set to the required position at
the display. The cursor can be moved to the left or right. These buttons are usually used to step
through the options and to move from one option to another or between the menu levels. Numeric
values can be set in some control modes as well. In these cases, the buttons marked (, ) allow
the user to increase or decrease the number at the cursor button.
3
2
1
4
6
5
8
9
10
11
12
7

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The central button is used to select value you want to change (TAB).
3Rotary knob
The rotary knob integrates several functions. By turning the knob to the left or right, the user can:
step through the options
enter numeric values
The function of the rotary knob can usually be performed by the cursor buttons. The central button
is used to confirm the selection (Select) or change the function of the rotary knob (value change or
position change).
4Numeric keyboard
The keyboard allows the entry of numeric values on the display. ENTER button is used to confirm
the selection. CANCEL button can be used to cancel the entry.
5Direct keyboard
MENU button is used to open the Main menu of the instrument (parameters petting). SAVE
(RECALL) buttons can be used to save (recall) the actual setting of the instrument (all values
including parameters). Capacity of the memory i sup to 100 different settings. Each setting
contains simple text description.
6Function buttons
Function buttons can be used to call-up the functions of the calibrator directly. The following
buttons are provided:
function
key
Power
P
Energy
E
Voltage
U
Current
I
AC
AC
DC
DC
Output ON (Operate)
ON
Output OFF (Standby)
OFF
After the function mode is changed, the parameters of the respective function are restored. If the
respective function was never used, the calibrator resets to its reference values.

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7Display
The display is divided to three horizontal sections:
A. Information line
Selected function (Pac Basic –Power AC basic mode)
Date and time
Remote control state (Local –keyboard, Remote –computer)
B. Main area
This section displays the set-up values of generated signals and the data related to the
calibrator status. The section includes the following types of data:
1. Main value
There is displayed main output value with the unit and indication of AC or DC (picture).
There is displayed also achal position of cursor ▼▲ if the parameter is in edit mode.
Position of cursor can be changed using keys <, > and parameter can be changed using
keys , , or using the rotary knob. If output voltage exceeds 50V sign of danger voltage is
displayed before main value.
2. Auxiliary parameters
This section displays auxiliary parameters of actually selected function:
Voltage (functions power and energy)
Current (functions power and energy)
Phase / Power factor (functions power and energy)
Frequency (AC functions)
Power (energy)
Dose of energy (energy)
3. Measured value
Value measured using internal multimeter with unit. Value „over“ is displayed if measured
signal is out of range.
A
B1
a
B2
B2
B2
B2
B3
C
B4
B5
B6
B7

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4. Outputs state
Window displays which phase units are connected (one phase to three phase), which
terminals are used for signal generation and also informs about output voltage higher than
50V.
Symbols displayed in window:
- warning, displayed if output voltage is higher or equal 50V.
- phase unit (channel) is connected, output is off
- phase unit (channel) is connected, output is on
- phase unit (channel) is not connected
5. Specification
In the field specification of set-up output signal is shown. Uncertainty is related to the main
parameter. Label BUSY instead of accuracy is displayed, if calibrator is not within
specified parameters or if internal reconnection is in process. This can occur during
changing the functions, changing set parameters, switching output terminals ON and OFF.
Specification is not available in power functions „P Harmonic“ and „P Interharmonic“.
6. Information section
The information section located in the right part of the display and displays additional
information related to the selected function:
information about the grounding method of output terminals: GndU, GndI as set up
using the menu „Calibrator“.
information about voltage terminal configuration (2-wire / 4-wire) as set up using the
menu „Calibrator“.
information about the use of 25-turn coil or 50-turn coil (COIL x50) as set up using the
menu „Calibrator“.
information about number of controlled output channels (only functions „Power Pac“
and „Energy Eac“).
7. Meter’s information section
C. Display softkeys
The functions of these keys change during operation (depends on actual display mode).
8Power switch
Turns instrument AC power ON and OFF.
9Auxiliary input
Auxiliary input terminals for energy counting and for AC output signal synchronization.

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10 Current output
Current outputs HI and LO terminals (three phases L1, L2 and L3).
11 Voltage output
Voltage outputs HI and LO terminals (three phases L1, L2 and L3).
12 Meter input
Input terminals for internal multimeter. The COM terminal is common for all measuring. The V
terminal is for DC voltage (10V) and frequency (10kHz) measuring. The mA terminal is for DC
current (20mA) measuring.
Colors on display
Common rules are used for applied color of labels and values.
1. Red color is applied, when displayed value is measured by the calibrator.
2. Blue color is applied for parameters or values, which can be set-up or modified directly
from front panel keyboard or via Main menu.
3. Black color is used for fix values, labels, notes, parameters which cannot be modified and
for other fix text with general information purpose.
4. Meaning of display buttons is always shown the lowest line. If there is no description
above display button, the button is not active in selected function.

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3.2 Rear panel
Rear panel includes ventilation holes, power cord socket, power line fuse, power line voltage
selector 115/230V, fuse for internal multimeter, interface connectors GPIB, RS232 and RJ45,
BNC outputs connectors and metal central ground terminal.
1 forced ventilation holes
2 energy pulse output - reference output (see Energy pulse output in Chapter 4.5)
3 sample reference output - manufacturing and service only
4 phase reference output - internal reference signal for 0 ° phase (all output channels are
synchronized with this signal)
5 GPIB, RS-232 and RJ45 connectors
6 central ground terminal
7 power line switch
8 fuse for internal multimeter (T100mA / 250V)
9 power line fuse
10 power line entry
1
5
6
9
10
8
7
4
3
2

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4Control of the calibrator
4.1 Selection of function
After the power is switched on and the initial checks complete, the calibrator resets to its reference
state:
Function: Pac Basic
Voltage: 10V
Current: 1A
Phase: 0°
Frequency: 50Hz
The state of the calibrator can be changed using the buttons located at the front panel in one of the
following ways:
1. Change of function by pressing one of direct function buttons
After pressing one of the buttons P, E, U, I, DC, AC calibrator switches to the selected function
and set the last set-up parameters. Whenever function is changed, calibrator always goes over to
STANBY position. Output terminals are disconnected. All functions with direct access has
submenus, where various basic modes of the selected function can be chosen. Access to the
submenu is always vie display button Mode.
2. Connection /disconnection of output terminals
After pressing the ON button, the output terminals of the calibrator are connected. Only those
terminals are activated which are aimed for DUT connection. To disconnect active terminals push
the OFF button.
3. Access to the Main menu
After pressing the MENU button the calibrator displays the basic level of the setup menu. In this
menu you can change instruments setting and calibration data. Previous function is recalled after
pressing Exit softkey.

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4.2 Setting the value of output signal
Edit mode
Parameters of output signal can be changed in Edit mode. Only parameters displayed in blue color
can be changed. Display can be switched to edit mode in different ways:
-Pressing numeric button
-Pressing „Sel“ button (in the middle of cursors buttons)
-Pressing cursor button
-Pressing the rotary knob
In edit mode is edited value highlighted by blue background. Pressing the „Sel“ button you can
change among „blue“ parameters. Edit mode is finished by pressing „Exit“ softkey.
Entry of the value using numeric keyboard
Use the numeric keyboard to select the desired value. After the first digit is entered,
input box is displayed. In the upper row of the input box is the name of edited
parameter. Using softkeys you can enter the new value in different units.
Enter desired value.
After the entry is complete press softkey with requested unit or press „Enter“ button.
„Enter“ button inputs the value in basic units (V, A, W, …).
Calibrator sets new value.
The value is copied to the appropriate field in the screen and the input box disappears.
Entry of the value using cursor buttons
Press , , or button. The display now includes cursor marks which points to the
active digit.
and buttons can be used to change the active digit. , buttons can be used to
change the position of the cursor marks

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To get to the default screen, press „Exit“ button. All values can be set using the buttons
or the rotary knob.
Entry of the value using the rotary knob
Press the rotary knob. The display now includes cursor marks which points to the
active digit.
Turn the knob to change the active digit
Press the rotary knob to change to the mode which allows to change the value of the
active digit. ← and → symbols are displayed above the active digit. Active digit can be
changed by turning the knob.
Turn the knob to change the position of the active digit.
To get to the default screen press „Exit“ button. All values can be set using the buttons
or the rotary knob.
Note:
All parameters have limits (high and low). If the entered value is outside these limits
error message is displayed („Value too large (small)“) and new value is not accepted.
4.3 Connection / disconnection of output terminals
After switching the AC power supply on the output terminals are disconnected in all modes.
Press the “On” button to connect the output signal to the terminals. Green LED above the “On”
button is lit.
Press the “Off” button to disconnect the output terminals. Green LED goes off.
Output terminals are disconected automaticaly under following conditions:
Function mode change
Output voltage exceeds 100V. It occurs if you change the output value that is below
100V to the new value above 100V.
Calibrator is overloaded.
Changing some parameters of output signal (P Harmonic, etc.)
Changing frequency for voltage above 280V
Energy counting is finished.
Output voltage exceeds 280V while current outputs are floating. It occurs if you change
the output value that is below 280V to the new value above 280V and current outputs

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are not grounded (GndI Off). Calibrator disconnects output terminals, grounds the
current terminals and displays following message:
Grounding state of current outputs will be recovered according to the Setup Menu
automatically as soon as the voltage will drop below 280V.
Control sequence when output voltage over 100 V is selected
When output voltage over 100 V is selected, the information section of the display shows the
symbol which informs that a life-threatening voltage will be present at the output terminals. If the
output terminals are currently connected, they will be disconnected when output voltage over 100
V is selected. ON button must be pressed to reconnect the output signal to the output terminals.
After the ON button is pressed, ON LED is lit and the information section of the display shows the
symbol notifying the user about the connection of the dangerous output signal to the output
terminals.
Voltage, and frequency can be set without the outputs being disconnected. The output terminals
are automatically disconnected when changing between AC and DC ranges or when changing the
function mode.

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4.4 Generation of electric power
The calibrator can generate exact value of electric power and energy. Power function modes
provides output voltage at VOLTAGE OUTPUT HI –LO terminals and output current at
CURRENT OUTPUT HI –LO terminals. Depending on the setting of the calibrator, voltage up to
600 Vef can be present at the terminals.
Power setting range: 0.005 VA to 18 kVA (each channel)
Voltage setting range: 1 to 600 Vac, 1 to 280 Vdc
Current setting range: 5 mA to 30 A
Power factor setting range: -1 to +1 (phase 0 to +359.99 °)
Frequency setting range: DC, 15 Hz to 1 kHz
Control in the power mode
Press “P” button on the calibrator and then select AC or DC mode by pressing „AC“ or „DC”
button. The display shows the following data:
* main value of set power in selected unit of measurement VA, W, VAr
* voltage at VOLTAGE OUTPUT HI-LO terminals
* current through CURRENT OUTPUT HI-LO terminals
* power factor or the phase shift between the voltage and current in °.
* frequency, if AC power is selected
* uncertainty of set power
Set desired value of power using numeric keyboard, potentiometer or cursor buttons. Output
power is not yet connected to the output terminals.
Connect the instrument to be calibrated to VOLTAGE OUTPUT HI-LO and CURRENT
OUTPUT HI-LO terminals or short the CURRENT OUTPUT HI-LO terminals.
Press OUTPUT button.
Green LED is lit above the “On” button to indicate the connection of simulated electrical
power to the output terminals. Connected terminals are also displayed in the „Outputs state“
window as green circles.
Desired power is connected to output terminals.