Ⅸ . Bill Loading................15 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.
II. Brief Introduction Clamp on ground resistance tester TR-5300 is a major breakthrough in traditional 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.
Position of conductor in the clamp Centred Proximity to metallic the clamp >10cm Loop resistance Non choke resistance Rate of distortion <0.5% Interferance current on measurement of loop resistance 5. Variations in the nominal working range Distirtion quantity Distortion Limit of operating range 1.5 class of ℃...
(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...
(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.
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.
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.
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.
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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 .
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.
(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.
Earth resistance of oiling machine: R = R -R 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.
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.
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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 new measurement point should be considered. When measuring in point C, what we measure is earth resistance of the spur track. IX.