MEGABRAS MAR83s User manual

2023-09-29
MAR83s
Three-phase power quality analyzer
User manual
Parts of this manual may differ from your equipment, depending on your country,
hardware version and / or rmware and are subject to change without prior notice.
© 2023 MEGABRAS.
All rights reserved

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Content
Safety information ............................................................................................................ 3
Symbols used on the equipment ........................................................................................ 4
Measurement Categories .................................................................................................. 4
1. Description ................................................................................................................... 5
2. Control Panel ................................................................................................................ 6
3. Flex Power battery charger ..................................................................................... 7
4. Turning on the MAR83s ................................................................................................. 8
5. Setting the instrument ................................................................................................... 8
5.1. Access the conguration menu .............................................................................. 9
5.2. Change language .................................................................................................. 9
5.3. Change display contrast ........................................................................................ 9
5.4. Selecting the measurement mode .........................................................................10
6. Connection of current sensors ......................................................................................11
7. Connection diagrams ...................................................................................................12
8. Performing measurements ...........................................................................................13
9. Auto off .......................................................................................................................16
10. Maintenance ..............................................................................................................16
11. Technical service .......................................................................................................16
12. Technical specications .............................................................................................17
13. Warranty ....................................................................................................................19

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MAR83s
Safety information
The MAR83s power quality analyzer was developed and produced in accordance with IEC 61010-1,
has CAT III 1000 V, CAT IV 600 V. Please read the safety precautions carefully to avoid personal
injury and damage to the instrument or any other product connected to it.
zReview the manual before using the instrument and its accessories
zRead all instructions carefully
zDo not use the instrument near explosive gases, vapors, or humid environments.
zUse the instrument only as specied in this manual or the protection provided by it may be
impaired
zUse only current clamps, test leads, and adapters provided by the manufacturer or specied
by the manufacturer as suitable for the instrument
zBefore use, inspect the instrument, power leads, test leads, and all accessories for
mechanical damage, looking for cracks in insulation or areas with exposed conductor. Never
use damaged accessories and contact technical support
zWhen in doubt about the correct operation of the instrument, try to measure a known voltage
zRemove test leads, cables, clips and accessories that are not in use
zDo not touch in places with voltage > 30 Vac RMS or 60 Vdc
zDo not use the instrument to measure voltages greater than the indicated limit near the
terminals, observing and respecting the measurement category for which it was designed
zDo not use with voltages higher than the nominal values of the voltage test leads or current
clamps
zUse current sensors (D-type clamps) only for measurements on insulated cables
zSpecial attention when connecting or removing Rogowski coils (exible)
zAlways use personal protective equipment
zDo not insert metallic objects into the connectors
zUse only the power supply recommended by the manufacturer

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THIS EQUIPMENT MUST BE OPERATED ONLY BY QUALIFIED PERSONS, DULY TRAINED,
RIGOROUSLY APPLYING THE PERTINENT SAFETY REGULATIONS.
Symbols used on the equipment
Attention, refer to the user manual
Do not apply around uninsulated dangerous live conductors, or that could cause electric shock,
electric burns or electric arc
Connector polarity indication
DC - Direct current
CAT III Measuring category III
CAT IV Measuring category IV
The equipment complies with the current guidelines of the EU
Double insulation: symbol indicates that the equipment is classified as Class II (double
insulated)
The rubbish bin with a line through it means that in the European Union, the product must
undergo selective disposal for the recycling of electric and electronic material, in compliance
with Directive WEEE 2002/96/EC
Measurement Categories
CAT II
Corresponds to measurements taken on circuits directly connected to low-voltage installations.
CAT III
Corresponds to measurements on building installations.
CAT IV
Corresponds to measurements taken at the source of low-voltage installations.

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MAR83s
1. Description
MAR83s energy analyzers are programmable measuring instruments that measure and calculate
the main electrical parameters of industrial networks: voltage, current, frequency, active and
reactive power, power factor, Total Harmonic Distortion (THD), neutral current and sequence of
phases, in balanced / unbalanced single-phase or three-phase networks.
The equipment has an automatic detection system of the type and range of the current transducer
(clamp or Rogowski coil) that is being used, facilitating the measurement and preventing the
operator from making mistakes when determining the appropriate constant.
It is a robust and light equipment, very easy to transport and operate. For technicians and those
who carry out electrical maintenance tasks will nd in the MAR83s the most suitable auxiliary to
check the quality of electrical energy, as well as for the development of reactive compensation
systems and harmonics in consumption.

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2. Control Panel
Display Rotary selector
Voltage inputs Power supply input
Current inputs

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MAR83s
3. Flex Power battery charger
The MAR83s has a Flex Power battery charging system. This system allows the use of any power
supply between 5 V and 12 V as long as the output power is at least 10 W.
It is recommended to run a full charge cycle before using the instrument for the rst time. A full
charge cycle can take up to 5 hours.
No damage will occur if the power supply remains connected to the instrument for long periods
of time. The instrument automatically interrupts the charging process when the battery is fully
charged.
Before starting the charging procedure, check if the voltage and frequency of the AC adapter is
compatible with the mains supply.
Instrument off Instrument on
zUse only the AC adapter recommended by the manufacturer. The use of another AC
adapter may compromise the correct operation of the equipment and the safety of
the users
zTo avoid depleting the battery capacity, perform a full discharge and recharge cycle at
least twice a year

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4. Turning on the MAR83s
ON / OFF: Press and hold the selector for 3 seconds.
HARD SHUTDOWN: Press and hold the selector for 10 seconds.
5. Setting the instrument
All operation / conguration of the MAR83s is done via the rotary selector.

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MAR83s
5.1. Access the conguration menu
In the MAIN MENU, use to select the Congure option and conrm with .
5.2. Change language
zIn the CONFIGURATION menu, use to select the Language option and conrm with
zIn the LANGUAGE menu, use to select one of the three available options: Portuguese,
Spanish or English. Conrm with
5.3. Change display contrast
zIn the CONFIGURATION menu, use to select the option Screen contrast and conrm
with
zIn the CONTRAST menu, use to adjust the contrast level of the display and conrm
with

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5.4. Selecting the measurement mode
zIn the CONFIGURATION menu, use to select the Measure mode option and conrm
with
zIn MEASURE MODE, use to select one of the available modes: Single-Phase, Two-
Phase, Three-Phase 3-Wire, Three-Phase 4-Wire or Three-Phase with Balanced Load. Conrm
with
Current sensors marked with an asterisk may or may not be used in the respective
measurement modes.

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MAR83s
6. Connection of current sensors
For safety reasons, only use current sensors supplied by the manufacturer.
The MAR83s automatically detects and congures current sensors. Simply insert the current
sensor connector into the terminal of the equipment and screw the lock clockwise.
Connect the sensors to the phases / neutral always observing that the arrow indicates the
direction of the current in the direction of the load under analysis.

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7. Connection diagrams
Three-phase connection
3-Wire 4-Wire and 4-Current Sensors
With balanced load 4-Wire and 3-Current Sensors
Two-Phase connection
3-Wire and 3-Current Sensors 3-Wire and 2-Current Sensors
Single phase connection

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MAR83s
8. Performing measurements
zThe user manual and its safety precautions must be read and understood before
using the MAR83s
zSafety precautions and local safety regulations must be strictly applied to
zFor safety reasons, use only accessories supplied by the manufacturer
1. Connect the current sensors and voltage clamps to the MAR83s.
2. Connect the current sensors and the voltage clamps to the respective conductors to be
measured.

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3. Turn on the instrument with . In the MAIN MENU, use to select the Measure
option and conrm with .
4. The selected measurement mode will be displayed.
To change the measurement mode:
Use to select the Select mode option and conrm with (more information in “5.4.
Selecting the measurement mode” - p.10).
To start the measurement:
Use to select the Measure option and conrm with .
5. The MAR83s will automatically detect connected current sensors. A screen with the detected
sensors will be displayed.

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MAR83s
6. After a few seconds the MAR83s will enter measurement mode. Use to switch
between the measured parameters.
7. To return to the MAIN MENU, press .

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9. Auto off
Display illumination turns off automatically after 5 minutes of inactivity.
MAR83s automatically shuts down after 10 minutes of inactivity.
10. Maintenance
The MAR83s does not require special maintenance. Avoid any adjustment, maintenance or repair.
This must be done by qualied personnel. When you suspect a malfunction of the equipment or its
protection, take the instrument out of service and contact technical assistance.
11. Technical service
In case of any doubt about the operation or damage to the equipment, contact the MEGABRAS
customer service or your nearest distributor.
MEGABRAS INDÚSTRIA ELETRÔNICA LTDA.
Rua Gibraltar 172 - Santo Amaro - CEP 04755-070 - São Paulo - SP - Brazil
Phone: [phone]
Fax: [phone]
E-mail: [email protected]

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MAR83s
12. Technical specications
Input 4 voltage / 4 current
Voltage measurement 50 - 500 Vac
Resolution 0.1 V
Accuracy in voltage measurement 0.5% ± 2 digits
Current measurement Up to 5 A (optional clamps)
Up to 600 A (optional Rogowski coils)
Up to 3000 A (optional Rogowski coils)
Resolution 0.01 A (with sensor up to 5 A)
0.1 A (with sensor up to 600 A)
1 A (with sensor up to 3000 A)
Accuracy in current measurement 0.5% ± 2 digits
Frequency measurement 45 - 65 Hz
Active power measurement Up to 1.5MW per phase (depends on current transducer)
Resolution 1 W (with sensor up to 5 A)
Reactive power measurement Up to 1.5 MVAR per phase (depends on current transducer)
Resolution 1 VAR (with sensor up to 5 A)
Power measurement accuracy 1% ± 2 digits
Power factor measurement -1.00 up to 1.00
Resolution 0.01
Phase sequence Indication of forward or reverse sequence
Display 128 x 64 px graphic LCD
Measure category CAT III 1000V / CAT IV 600V (depends on accessories)
Safety IEC 61010-1
Environmental protection index IP65 (with closed lid)
Operating temperature -10°C to 50°C
Storage temperature -25°C to 65°C
Humidity Up to 95% RH (non-condensing)
Power supply Internal rechargeable NiMH battery, 6 x HR6 (AA)
Battery charger Flex Power, 5V - 2A or 12V - 1A
Equipment weight Approx. 1.7 kg
Dimensions 221 x 189 x 99 mm

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Accessories included • 4 voltage test leads
• AC Adapter (12 V - 1 A)
• Carry bag
• User manual
Accessories available • Set of 3 clamps to measure phase currents up to 5 A
• Clamp for neutral current measurement up to 5 A
• Set of 3 or 4 Rogowski coils for current measurement up to 600 A
• Set of 3 or 4 Rogowski coils for current measurement up to 3000 A

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MAR83s
13. Warranty
MEGABRAS warrants the products for two years from date of shipment. We will repair, without
charge, any defects due to faulty materials or workmanship. For warranty repair information,
visit our website www.megabras.com. This warranty does not apply to accessories or damage
caused where repairs have been made or attempted by others. Warranty period for accessories
and batteries is 6 months except for LFP batteries, which have the same warranty period as the
equipment itself.
This warranty obligation is limited, at ours option, to free of charge repair or replacement of the
defective product within the warranty period, or to refund of the purchase price.
Any costs for transportation to manufactures facility is the responsibility of the customer. The
manufacturer assumes no risk for damage in transit.
If MEGABRAS determines that the failure was caused by misuse, alteration, accident or abnormal
condition or handling, you will be charged for the repair and transportation.
THE MANUFACTURER DOES NOT TAKE ANY RESPONSIBILITY FOR ANY EVENTUAL DAMAGE
DUE TO THE USE OR IMPOSSIBILITY TO THE USE OF THE EQUIPMENT SUCH AS THE LOSS OF
MEMORY DATA, ACCIDENTS IN THE FIELD, LOSS OF PROFIT, ETC.

MEGABRAS INDÚSTRIA ELETRÔNICA LTDA.
Rua Gibraltar, 172 - Santo Amaro
CEP 04755-070 - São Paulo - SP - Brazil
Phone: [phone] - Fax: [phone]
www.megabras.com