Uni-T UT522 Handleiding

Uni-T Meetapparatuur UT522

Lees hieronder de 📖 handleiding in het Nederlandse voor Uni-T UT522 (2 pagina's) in de categorie Meetapparatuur. Deze handleiding was nuttig voor 7 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

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1.Safety Information
This operation manual includes the safety information related to the operation of the
tester, please read them carefully before using the tester.
Before using the Tester, please read and understand the operating manual.
Please keep the Operating Manual properly for future use.
Use the Tester as specified in the Operating Manual.
Please understand in detail the Safety Information section of the manual.
Strictly follow the Safety Information, otherwise it may cause personal injury or
damage to the Tester.
Danger ide ifi nt es co itions a nd nd actions that most li elk y p e os severe or
fatal hazard(s) to the users
Warning identifies conditions and actions that may pose severe or
fatal hazard(s) to the users.
Caution identifies conditions and actions that will pose hazard(s) or
damage the Tester.
Safety sign " "has 3 meanings in this manual, the user has to pay attention to
this sign " " during operation.
Danger
Do not use the Tester around explosive environment, which may cause fire and
explosion.
Do not make any connections when the Tester is wet or the operator's hands
are wet.
Do not apply any voltage beyond the rating or specified range of the Tester.
Do not open battery compartment while testing.
Warning
Do not use the Tester if it is damaged or metal part is exposed.
Do not disassemble the tester randomly. If it needs repair, please contact our
after-sales services or our agents.
Do not change battery or open battery compartment when the Tester is wet.
clean it with dry soft cloth first.
Make sure the Tester is turned off when changing battery or opening the battery
compartment.
Caution
Ensure test lead is inserted into the corresponding port before measurement.
Take the battery out from the Tester if it is not used for a long time.
Do not expose the Tester in extreme temperature and wet environment.
Soft cloth and mild detergent should be used to clean the surface of the Tester
No abrasive and solvent should be used
Dry the tester before storing if it is wet.
Electrical Symbols are used on the Tester or in the manual:
danger, warning caution, double or rein orced insulaf tion
AC Grounding
Conforms to Standards of European Union
2.Features
The Tester is designed with intelligent micro-controller chip to maintain high
accuracy and reliability. It can measure earth resistance of earth ground devices for
electric power installations, electrical appliances, lightening protection systems, etc,
and also measure earth voltage(It is highly recommended not to use the Tester
under severe outdoor environments such as raining or thunder).
● Backlight LCD;
● Battery Check;
● Data Hold& Data Storage(up to 20 sets);
● Auto Power Off;
● Offers Precision Three-Wire & Simple Two-Wire Measurements;
● “- - - - Ω” Indication for Bad Connection to C or E Terminal When Measuring
Earth Ground Resistance;
● “OL” Overloaded Indication;
● Double-or Reinforced-Insulated Structural Design.
3.Technical Specifications Specifications
Measuring range and accuracy(under 20 5 & 75%RH):
Compliances:
IEC 61010-1 CATIII 600V; Pollution Degree 2
IEC 61557-1,5
IEC 61010-2-31
Functions
Earth Voltage
Measure Range
0V~400V(50/60Hz)
Earth
Resistance
Best Accuracy
(1.0%+6)
(2.0%+20) (40 range)
(2.0%+3)(400 or 4000 range)
(Auxiliary earth resistance 500
(accuracy 5%);earth voltage 10Vac)
0.00 ~40.00
0.0 ~400.0
0 ~4000
40
400
4000
Measure modes:
(1) Earth Voltage : average respondmeasurement
(2) Earth Resistance measurement: test signal frequency : around 820Hz,
current: around 3.2mA at 40Ω range.
Measuring scope (Max. deviation:±30%):
40 Range: 5.00 ~40.00
400 Range: 40.0 ~400.0
4000 Range :400 ~4000
Working condition:
Temperature:5 ~40
Relative humidity: 80%RH(no fog)
Altitude: 2000 m
Storage condition:
Temperature:-20 ~60
Relative humidity: 75%RH(no fog)
Power:
[1.5V Alkaline Battery (AA)*6]
Overload protection:
Earth resistance ranges: 200 Vac (10 seconds)
Earth : 600 Vac (30 seconds)voltage ranges
＞20MΩ between measure circuits and the casing.
Insulation impedance:
Product size:
160mmx70.5mmx100mm.
Product Weight:
around 560g.
Accessories:
Green test lead (5m)
Yellow test lead (10m)
Red test lead (20m)
Auxiliary earth stakes
Simple test leads with alligator clips
1.5V Alkaline Battery (AA)
Carrying bag
English manual
1 pc
1 pc
1 pc
2 pcs
1 set
6 pcs
1 set
1 pc
4. Tester Structure&Accessories (Figure 1)
Figure 1
LCD Display
LIGHT/LOAD button
HOLD/SAVE button
TEST button
Rotary switch
Input terminals
Standard 3-Wires test leads
Simple 2-Wires test leads
Auxiliary earth stakes
2
3
1
4
5
6
7
8
9
Battery sign Battery Voltage
8.2V
7.8V~8.2V
7.4V~7.8V
7.0V~7.4V
7V
5. Preparation before measurement
Battery Check: Set the rotary switch to earth voltage or earth ground
resistance ranges, if “ ” shows, it indicates the battery is very low and
needs to be replaced timely, otherwise the Tester may be unable to work
normally.
5.1
P/N:110401104454X
This operating manual is subject to change without notice.
**END**
5.2
Test Leads Connection
Make sure all the test leads are firmly connected to the Tester input terminals;
Poor connection will affect measurement accuracy.
6. Making Measurements
Warning
The voltage up to 50Vac will be present between E and C input terminals
during earth ground resistance measurement. To avoid any electric shock,
do not touch exposed metal part of test leads and auxiliary earth stakes.
6.1 Precision Measurement (with use of standard test leads)
a. Insert P and C earth stakes deep into the soil, make sure the earth stakes and
tested object are in a straight line and at a distance of 5m~10m from each
other. See Figure 2 for the wire connections
(Note: Ensure the earth stakes are inserted into damp soil, if the soil is dry, fill
in enough water. Stony or sandy soils also need to be dampened before test.
If the test sites are covered with concrete in the city area, which makes it
impossible to insert the ground stakes, you can place two 25cmx25cm steel
plates (or the auxiliary stakes) horizontally on the concrete, cover them with
towels damped sufficiently with enough water, then measuring electrodes are
produced and under general circumstances, the measurement can begin now.)
Figure2
C: auxiliary electrode P: potential electrode E: earth electrode
Auxiliary
Earth Stakes
Earthed Electrode
Under Test
Red
Yellow
Green
5~10m 5~10m
b. Measuring Earth Voltage:
1) Set the rotary switch to EARTH VOLTAGE, LCD shows the Tester enters into
earth voltage test status.
2) Insert test leads into V and E terminals and then connect them to tested points.
(Do not make any connection to other terminals)
3) The measured earth voltage shows on LCD(No need to press TEST button). If
the measured voltage is 10V, please switch off all related electrical ＞
equipments and wait until this voltage decreases before you makes any earth
resistance measurement, otherwise it may affect the accuracy of earth
resistance measurement.
Warning:
Only V and E input terminals are used for earth voltage measurement, do not
make any connection to C and P terminals. Otherwise, it will cause danger and
damage the Tester.
d. Auto Power Off:
The Tester will automatically switch off to conserve the energy
after the buttons and rotary switch keep inactive for 10 minutes (except under
earth resistance test status.)
e. Backlight:
When making measurements in dimly lit sites, press “Light/Load”
button to turn on the backlight, and its icon indicates on LCD accordingly. Press
again to turn off the backlight.
f. Data Hold:
During the measurement, gently press “Hold/Save” to freeze the
measured value, indicated by HOLD icon on LCD, press again to disable the
function.
c. Measuring Earth Ground Resistance:
1) Set the rotary switch to earth ground resistance 4000Ω range.
2) Press “TEST” button, the button will be illuminated, indicating the instrument is
under measurement status. And LCD shows the measured earth resistance value.
If measured earth resistance:＜400Ω, turn the rotary switch to 400Ω range;
＜40Ω, turn the rotary switch to 40Ω range;
Or you can select earth resistance range in an order you like, however, to obtain
accurate value, make sure you have selected the best range for your measurement.
Caution:
● If C or E input terminal is not well contacted, or auxiliary earth resistance or
measured earth ground resistance is too large or input terminal are opened (
＞14kΩ at 40Ω range), the LCD will show “- - - -Ω”. Please check if the test
leads are firmly connected or the soil is too dry or the auxiliary earth stake has
been properly inserted into the earth or not.
● When measured earth resistance is out of range, and it is＜14kΩ at 40Ω range
or ＜ ＜26kΩ at 400Ω range or 78kΩ at 4000Ω range, LCD will show “OL” icon
(Overloaded).
● The reading may be affected if auxiliary stakes are bent or in contact with other
objects. So please clean the earth stakes before connecting the test leads,
otherwise it may cause deviations to the readings if the auxiliary stake has a
large resistance.
3. Clear Data
press"Hold/Save"button and "Light/Load"button simultaneously, then switch-on
the Tester, LCD display will show"C L .",
Meanwhile, all the data in the memory will be deleted( no matter whether the
memory is full or not).
6.2 Simple Measurement (with use of simple test leads):
This method is applied when auxiliary stake is impossible to use, which uses an
exposed object with low earth resistance as one electrode, such as metal water
slot, pipe, common earth of power supply wiring, earth ground terminal of
buildings, etc.(using E and P&C terminals).
See Figure 3 for wire connection:
Figure 3
Primary
Side
Red
Green
Secondary
Side
Supply Transformer
Peference Earthed
Electrode
Earthed Electrode
Under Test
When using this method, P and C have already been connected together.
Danger
Please take extreme caution about the electric shock when using earth ground
terminal of commercial power system as a reference test point.
7. Maintenance & Repair
7.1
Maintenance
7.1.1 Replacing the Battery (See Figure 4)
Please replace the battery timely when low battery indicator shows. Follow the
steps as below:
Figure 4
a. switch-off the Tester and remove all the test leads.
b. release the screw in bottom part,and open battery compartment.
c. Replacing all old battery (6) with new battery.
d. After replacing the batter y, w.rejoin the battery compartment and firmly scre
Remove all the batteries if not used for a long time in order to avoid the
leakage and corrosion in the battery compartment.
7.1.2 Cleaning the Tester
Soft mi ld cloth and ld detergent shou be used to clea n the surface of the Tester,
no solvent or alcoholic is allowed for it may damage the display.
7.1.3 Protection from Moisture
7.2
Repair
7.2.1 Contact our after-sales service department or agents when the following
incidents:
a. The Tester is being damage.
b. LCD display abnormally.
c. Unreasonable deviation when in normal use.
d. Buttons do not function properly.
7.2.2 when the Tester needs repair, please have it serviced by qualified
professional personnel or authorized service center.
g. Data Storage:
1. Save Data: Long press “Hold/Save” button for 2seconds to enable Data Save
function and meanwhile save the data accordingly, then gently press the button
again to save the second set of data, circulate so on and so forth. To cancel
the function, long press “Hold/Save” for 2s to exit.
2. View Data: Long press “Light/Load” for 2s to recall NO.01 data, then gently
press the button to recall NO.02 data…. up to 20sets of data. To return to
previous set, gently press “Hold/Save” button.(Under this status, “Hold/Save”
and “Light/Load”(gently press) buttons are used as Up and Down buttons). To
exit the function, long press “Light/Load” button for 2s.

Product specificaties

Merk: Uni-T
Categorie: Meetapparatuur
Model: UT522

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