Icel Manaus TR-5300 User manual

TR-5300
CLAMP-ON GROUND
RESISTANCE TESTER
MANUAL

Table of Contents
Ⅰ.Attention....................................................................................1
Ⅱ.Brief Introduction.........................................................................1
Ⅲ.Specification...............................................................................2
1. Model of Series............................................................................2
2. Ranges and Accuracy of Measurement...............................................2
3. Technical Specifications.................................................................3
4. Reference conditions.....................................................................3
5. Variations in the nominal working range.............................................4
Ⅳ.Structure of Meter.........................................................................4
Ⅴ.Crystal Display.............................................................................4
1. LCD Screen.................................................................................4
2. Description of Special Symbols........................................................5
3. Examples of displays.....................................................................5
Ⅵ.Operate the Meter.........................................................................6
1.Boot Up .....................................................................................6
2.Shutdown .................................................................................7
3.Resistance Measurement..............................................................7
4.Data Lock/Release/Store..............................................................7
5.Data review.................................................................................8
6.Configure alarm value....................................................................9
7.Review alarm setting......................................................................9
8.Delete Stored data.......................................................................10
Ⅶ.On site application......................................................................12
1. Application in telecommunication building........................................12
2. Application in transmitter tower......................................................12
3. Application in thunder-prevention grounding system of
4. Application in grounding system in gas station...................................12
Ⅷ. Important notes for earth resistance measuring................................13
1. Comparison of clamp method and tranditional voltage-current
measurement of earthing.................................................................13
2. Selection for measuring point........................................................14
Ⅸ. Bill of Loading...........................................................................15
I. Attention
Thank you for purchasing clamp on ground resistance tester TR-5300
In order to have better experience with this product, please
be certain:
---To read this user manual carefully.
---To comply with the operating cautions presented in this manual.
¨Under any circumstances, pay special attention to safety in the use of the Meter.
¨Do not exceed the measuring range and endenviroment provided.
¨Pay attention to text labeled on front panel and back plane of the meter.
¨Before booting up, trigger should be pressed for a couple of times to ensure jaws are
well closed.
¨Measurement can be performed o ' ' l inspenction innly when LCD shows OL after se
¨DO NOT OPERATE the trigger or clamp wires during boot-up stage.
¨DO NOT OPERATE the trigger or clamp wires during boot-up stage.
1
buildings...........12
method in

Model
TR-5300
Jaw specication(mm)
55x32
boot-up stage.
¨Keep jaw and jaw contact clean.
¨Pollution will effect accuracy of measurement.
¨Keep meter away from any impact, especially jaw contact planes.
¨It is normal that the meter has some sound buzzing during measurement.
Please remove batteries if long time without operation.
¨Disassembling, calibration and maintenance on the Meter shall be operated by the
authorized engineer.
¨In case of hazards generated itself caused by continuing use, stop using immediately,
send to authorized agencies for further operation.
II. Brief Introduction
Clamp on ground resistance tester is a major breakthrough in traditionalTR-5300
grounding resistance measurement. It is widely used in the grounding resistance
measurement of the power, telecommunications, meteorology, oilfield, construction
and the industrial and electrical equipment.
Clamp on ground resistance tester , in the measurement of a groundingTR-5300
system with loop, does not require breaking down the grounding wire, and need no
auxiliary electrode. It is safe, fast and simple.
Clamp on ground resistance tester is equipped with a long jaw sized 55mmXTR-5300
32mm, particularly suitable for the grounding with the flat steel.
III. Specification
1. Model of Series
2. Ranges and Accuracy of Measurement
Earth resistance
2
Range Resolution Accuracy
0.010-0.099Ω
0.10-0.99Ω
1.0-49.9Ω
50.0-99.5Ω
100-199Ω
0.001
0.01Ω
0.1Ω
0.5Ω
1Ω
( 1%+0.01 )±Ω
( 1%+0.01 )±Ω
( 1.5%+0.1±)Ω
( 2%+0.5±)Ω
(3%+1 )Ω

Conditions Reference
Ambient
Relative humidity
Battery voltage
External magnetic eld
External electric eld
Operating position
(20 3 )±℃
50%RH 10%±
6V 0.5V±
<40A/m
<1V/m
Clamp horizontal
3 . Technical Specifications
Power Source: 6VDC (4 X 5# alkaline battery)
Working Temperature: -10 to 55℃℃
Relative Humidity: 10%-90%
LCD: 4-digital LCD, 47 X 28.5mm in length
Span of Jaw: 28mm
Meter Quality (including batteries): 1320g
Meter Size: 286mm(L) X 84mm(W) X 56mm(H)
Protection Level: double insulation
Featured: by clamp
Range Shift: Automatic
External Magnetic Field: <40A/m
External Electric Field: <1V/m
Single Measuring Time: 1 second
Maximum resolution of resistance Measurement Resolution٠٫٠٠١ :Ω
Range of resistance Measurement Range١٠٠٠-٠٫٠١ :Ω
Number of record sets stored: 99 sets
Confingurable resistance alarm value: 1-199Ω
4. Reference conditions
3
200-395Ω5Ω( 6%+5±)Ω
400-590Ω
600-1000Ω
10Ω
20Ω
( 10%+10 )±Ω
( 20%+20±)Ω

Distirtion quantity Limit of operating range
Temperature
Relative humidity
Battery voltage
Conductor position
Clamp position
Proximity of
magnetic mass
Magnetic eld 50-60Hz
Electric eld 50-60Hz
-10 to 55℃
10%RH to 90%RH
5.5V to 6.5V
From edge to centre
±°180
1mm steel plate
against jaw face
400A/m
0-10KV/m
Distortion
1.5 class of
accuracy per 10°
1.5 class
0.25 class
0.1 class
0.5 class
0.25 class
0.25 class
0.25 class
5. Variations in the nominal working range
IV. Structure of Meter
1. Liquid Crystal Display (LCD)
2. Trigger: to open and close the jaw
3. Jaw: sized 55mm(L) x 32mm(W)
4. POWER Key: Boot Up / Shutdown /*Quit
5. HOLD Key: lock / Release display
6. MEN/READ:data store and review
V. Crystal Display
1. LCD Screen
(1) Alarm: Shows when the measured value exceed the configured alarm value.
4
Position of conductor in the clamp
Proximity to metallic the clamp
Loop resistance
Rate of distortion
Interferance current on measurement of
loop resistance
Centred
>10cm
Non choke resistance
<0.5%
Nil

(2) Low battery voltage
(3) Store data record
(4) Review data record
(5) Number in sequence of data records
(6) Current unit (not applicable in )TR-5300
(7) Resistance unit
(8) Noise signal
(9) Data hold
(10) Jaw is open
(11) Resistance measured lower than 0.01ohm
(12) Metrication decimal point
(13) 4-digital LCD figures display
2. Description of Special Symbols
(1) Symbol of an open jaw: shows as a jaw is in open state. In this case, trigger may
be artificially pressed, or the jaws have been seriously polluted, and not available for
measurement.
(2) Symbol of low battery voltage: shows when the battery voltage is lower than
5.3V. In this case, accuracy of the measurements cannot be guaranteed unless batteries
are replaced.
(3)" " symbol indicates that the measured resistance exceeds the upper limit ofOL Ω
the meter.
(4) "L0.01 " symbol indicates that the measured resistance exceeds the lower limit ofΩ
the meter.
(5) MEM symbol of storing data records
(6) MR symbol of reviewing data records: shows when reviewing data records stored,
as well as number of record.
(7) NOISE symbol of noise signal: shows when there is noise current in earth resistance
to measure. In this case, accuracy of measurement cannot be guaranteed.
3. Examples of displays
5

(1)---Jaw is in open state, not available for measurement
(2)---The measured resistance is under 0.01W
(3)---Loop resistance measured ٥٫١is W
(4)---Loop resistance measured ٢٫١is W
---current reading was locked٢٫١ :W
(5) ---Review No.26 data record stored
--- Loop resistance measured is 0.028W
(6)---Alarm raised, the measured resistance exceed the configured alarm value.
---Review NO.8 data record stored
---The resistance measured: 820W
VI. Operate the meter
1. Boot Up
Before to boot up, press trigger for few times to ensure the jaws are well closed.
Press power to boot up the meter. Firstly, self in pection is performed. It is ready for
resistance measurement when 'OL' shown on screen after self inspection.
6

During self inspection, DO NOT press the trigger, nor open the jaw, nor clamp any wire.
During self inspection process, make sure to keep the meter free. Do not overturn the
meter, nor impose any external force on jaw. Otherwise, accuracy of measurement
cannot be guaranteed. If jaws clamped around a conductor loop during self
inspection, any following measurement will be inaccurate. In this case, please remove
conductor loop and reboot.
2. Shutdown
When the meter is power on, press POWER key to shut it down. After five minutes the
meter started up, LCD screen start flashing, In order to save battery life, the meterwill
automatically shut down after the flashing state is sustained for 30 seconds. To press
POWER key when flashing, the meter resume status of working. In HOLD state, it is
required to firstly press HOLD key to quit from HOLD state, then press POWER key to
shut it down.
3. Resistance Measurement
After booting self inspection it shows, is completed 'OL ’ ready to proceed withW
resistance measurement. At this point, press trigger to open jaw, clamp the loop to
measure, read out resistance value. If necessary, self calibration can be done with
verification resistor in standard accessory as shown in the following figure.
The reading should be consistent with the normal value
on verification resistor ٥ .Carlibrated value of٫١W
verification resistor is in condition of temperature
of 20 . It is normalto find a difference of numerical℃
1 word between the shown value and nominal value
For instance: If nominal value of verification
resistor ٥ , ٥ or 5.2 is normal٫١is ٫٠showingWWW
and accepted. Showing 'OL ’ indicates that the measured resistance value exceededW
the upper limit of this meter. Showing '٠ ’ indicates that the measured٫٠١LW
resistance value exceeded the lower limit of this meter.
4. Data Hold/Release/Store
7

In resistance measurment mode, press HOLD button to lock displayed value with
symbol HOLD showing, as figure 1 shown below.
Press HOLD button again to unlock.
In measurment mode, press MEM/READ to enter data storage mode with symbol MEM
showing on screen. The displayed reading is stored and numbered with number shown
on top right of screen.
Press POWER button again to quit storage mode and revert back to measurment
mode.
To repeat above operation can stored up to 99 pieces of data points.
To quit storage mode, press MEM/READ button.
All stored datas will not removed after rebooting the meter.
Figure 1
Figure 1, save the measured 0.016ohms as No. 01 data record.
Figure 2
All stored datas are in memory and won’t drop when shutdown.
5. Review stroed data
Figure 3
When the meter is under measuring, long press (more than 3 seconds) MEM/READ
button to enter data review mode, with MR symbol shown , as fig. 3 shown above. The
No. 1 stored data is shown by default. Press MEM/READ button to review every pieces
8

To quit data review mode, long press MEM/READ button.
Press HOLD button to scroll up the recalling data.
6. Configure alarm value
In resistance measurement mode, long press HOLD button to enter configuration
mode for alarm value, as figure 4 below . The first digit to configure is the top digit.
Press button MEM/READ to switch digit from the high to low. When configuration
finishes, long press MEM/READ to return to measurement mode.
flickering
Figure 4
Figure 4 Setup value alarm for resistance measuremet
7. Review alarmconfigured value
long press button HOLD, In resistance measurment mode the configuredto examine
alarm value with the top digit flickering and last configuration shown. Long press
button HOLD to go back to measurement.
the configured alarm, Take below chart as example ohms٢٠ resistance is .for
Flickering
Figure 5
8. Delete Data
Firstly long press button MEM/READ to enter review mode of stored data. Short press
POWER button to delete the last record in memory. Long press POWER button to enter
CLR screen, then press POWER button again to delete all data or press MEM/READ to
cancel deletion.
VII. On site application
1. Application in power system
(1)Measurement for earth resistance of power transmission line tower
9

Generally, grounding of power transmission line tower forms multipoint grounding
system. To measure out earth resistance, just simply clamp grounding rods with this
instrument.
(2) Measurement for earth resistance of neutral point of transformer
There are 2 cases in neutral point grounding of transformer: if multiple grounding
applied, it is multipoint grounding system, else single point grounding .
For measurement, if the instrument shows 'L 0.01 ', it may mean that same pole &Ω
tower or transformer has more than 2 grounding rods, linked together under ground.
In this case, you should unveil other grounding rods, and keep one rod remain.
(3)Application in substation of power plant
Clamp on ground resistance tester is able to check status of touch and link in circuit.
With assistance from a line, it is able to measure link status between equipments in
station and earth grid. Earth resistance is measured accordingto single point
grounding.
2. Application in telecommunication system
(1)Measurement of earth resistance of machinery room in telecom building
In general, telecommunication system prefers to set its machinery room in high floor
of the building, which makes it hard to measure with usual earth meter. However, it is
easy and convenient to measure with this instrument. Details are as follows: link fire
hydrant and grounding electrode to measure with a test line (fire hydrant is equipped
in the machinery room), then measure the test line with clamp on ground resistance
tester.
Reading of resistance = earth resistance of machinery room + resistance of testing line
+ earth resistance of fire hydrant
If earth resistance of fire hydrant is very small, then:
Earth resistance of machinery room resistance of clamp meter - resistance of testing
line.
(2) Measurement of earth resistance of machinery room and transmitter tower
Grounding of machinery room and transmitter tower usually forms two-points
grounding system shown as following chart.
10

If the measured value of the instrument is lower than permitted value of earth
resistance, it is confirmed that earth resistance of the machinery room and transmitter
tower is qualified. if reading bigger than the permission value, please apply
measurement of single point grounding.
3. Application in thunder-prevention grounding system of buildings
If grounding electrode of bulding is separated from each other, earth resistance of
various electrodes can be measured as the following chart.
Thunder-prevention
Overhead conductor
4. Application in grounding system in gas station
In environment full of explosive gas, such as gas station, oil field and oil groove, it is
very necessary to adopt explosion-proof products.
Generally, gas station is requested to ensuse earth resistance and link resistance as
following:
Item to measure
Number
Earth resistance of oil tank
Earth resistance of loading point
Earth resistance of oiling machine
Link resistance of oil
hose of oiling machine
Technical requirement
1
2
3
4
≤Ω10
≤Ω10
≤Ω4
≤Ω5
11

(1)Measurement of earth resistance of oil tank and loading point
Shown as the above chart, as for grounding system in gas station, oil tank earth pole A
is connected with the oiling machine, and loading point earth pole C is an independent
earth pole. Then, find another independent earth pole as assistant earth pole B (such as
the underground water pipe, etc), and respectively measure out value of R1, R2 and R3
by clamp on ground resistance tester according to three-point method.
We will get:
Earth resistance of oil tank: R = (R +R -R )
A123
2
Earth resistance of assistant earth pole: R = R -R
B1A
Earth resistance of loading point: R = R -RC2A
Note: when measuring R , we should make sure that no conductor link between BC and1
AC, which is reqursted for measuring R and R .23
(2)Measurement of earth resistance of oiling machine
Listed as the above chart, find an earth pole which is apart from earth pole of oiling
machine, such as earth pole of loading point; then, connect the two points with test
line and measure out the value RT with the instrument. Finally, it is to calculate:
12

Earth resistance of oiling machine: R = R -RTC
In which: RT is the resistance measured by the instrument;
RC is the earth resistance of loading point.
(3) Measurement of link resistance of oil hose of oiling machine
Connect refueling gun and oiling machine with a test line and measure out the value
RT with the instrument. We will get:
Link resistance of oil hose of oiling machine: R = R -R
TL
In which: RT is the resistance measured by clamp on ground resistance tester;
RL is the resistance of test line.
VIII. Important notes for measuring earth resistance
1. It is usual for users to make comparison between testing values measured
respectively by clamp on ground resistance tester and traditional method-voltage &
current method. It is found that the difference between two methods is rather big. For
this problem, kindly please keep following issues as important notice:
(1)Whether unclasp (grounding body to measure is separated from grounding system)
has been done when measuring resistance by traditional voltage & current method. If
not, the earth resistance that measure refers to parallel connection value of earth
resistance of all grounding bodies.
It is meaningless to measure parallel connection value of earth resistance of all
grounding bodies. To measure earth resistance is to make comparison between the
earth resistance and a permitted value regulated by relevant standards, to decide
whether earth resistance is qualified.
In industry standard example: It is definitely stated: 'earth resistance of per radix
tower refers to the resistance measured when grounding body cut off electric
connection with
13

ground wire. If grounding body doesn't cut off electric connection with ground wire,
earth resistance measured refers to parallel connection value of earth resistance of
multi-radix towers. '
This regulation is quite definite.
As mentioned before, the reading of clamp on ground resistance tester is referring to
earth resistance of every spur track. As long as ground wire is in good contact, the
measured resistance represents earth resistance of single grounding body.
In this case obviously, it is meaningless to compare values measured out respectively
by traditional voltage & current method and clamp earth resistance tester. Since the
object measured is different, it must be different for two results.
(2)Earth resistance measured out by clamp earth resistance tester is integrated
resistance of that grounding spur track, which includes the contact resistance, down-
lead resistance and grounding body resistance from the spur track to common earth
wire. However, even in situation of unclasp, the value measured by traditional voltage
& current method only refers to the resistance of grounding body.
Obviously, the measuring value of former is bigger than the latter one. The balance
reflects how much of the contact resistance from spur track to common earth wire.
In addition, earth resistance prescribed in industry standards includes resistance of
grounding down-lead. It has the following explanation for the term - Earth Resistance
of Grounding Equipment: 'summation of resistance to earth of earth electrode or
natural earth electrode and resistance of ground lead'.
This kind of regulation is also very definite, for resistance of down-lead and earth
resistance of grounding body play an equal role in preventing thunder.
2. Selection for measuring point
In some grounding system, as listed in the following chart, a proper point should be
chosen for measurement; otherwise different measure results could be got.
When measuring in point A, the spur track measured is out of circuit, the instrument
shows 'OLW'. In this case a new measurement point should be considered.
14

When measuring in point B, the spur track measured is a circuit formed by metal
conductor, and it shows 'OL ’ or resistance value of metal circuit. A newW
measurement point should be considered.
When measuring in point C, what we measure is earth resistance of the spur track.
IX. Packing list
Clamp on ground resistance tester
Verification Resistor
AA 1.5V dry cell
Carry case
Operation instruction
1 piece
1 piece
4 pieces
1 piece
1 piece
V3