PC39A type digital ground resistance tester (high current) overview
This product is suitable for measuring the resistance between all kinds of motor, electrical appliances, instruments, household appliances and other equipment to protect the ground and can reach the value of the metal shell. It has the advantages of accurate measurement, convenient operation etc.. accord with GB4706.1 "Test safety of household and similar electrical appliances - General requirements" and other relevant national standards in terms of the requirements of the test equipment needed. This instrument is carried out Q/TPGG1PC39 The enterprise series digital tester standard.
PC39A type digital ground resistance tester (high current) specifications and technical characteristics
2.1 conditions of use
temperature Zero C ~ Forty C
The relative humidity is less than or equal to Eighty %
AC power supply 220V Tolerance. Ten %, 50Hz
No strong electromagnetic interference source, without a lot of dust and corrosive gas, good ventilation.
2.2 product features
A automatic compensation of line resistance and contact resistance test fixture.
The measured value of B automatic range conversion.
C has over-current and under flow indication and protection function. ( PC39A )
D memory test conditions.
E measured value exceeds the alarm value, the instrument has sound and light alarm function.
F can be single or continuous test, suitable for the production line.
G front panel type correction software.
2.3 models and technical parameters.
60~10010.0~120.0
40~6010.0~200
20.0~40.0
10.0~300
5.0~20.010~600
The basic error ( Three % R + 3D )
A5.0~99.9
The basic error ( Three % R + 3D )
Test voltage (AC) V Less than or equal to Twelve
The resolution of 0.11.0~199.9?? 1200~600
Test time S : 0~99. 5%
Size L * B * H , Mm : Three hundred and eighty * Three hundred * One hundred and ninety-five
weight Kg25
PC39A type digital ground resistance tester (high current) structure and working principle
3.1 test principle
3.2 instrument function key layout
1 "the current" display window Two "Grounding" display window
3 "time" display window Four The "measure" indicator
5 "qualified" indicator Six "Compensation" status indicator
7 "flow" status indicator Eight Alarm indicator
9 "less flow" status indicator Ten The current adjustment knob
11 "reset" button Twelve "Delta" button (increase)
13 "at" key (reduce) Fourteen The "start" button
15 "set" button Sixteen Measuring end
17 "power switch"
1 ground terminal Two Fuse, seat
3 power socket (without fuse) Four Nameplate
PC39A type digital ground resistance tester (high current) safety precautions
4.1 before using please read the instructions and follow the instructions step in operation.
4.2 do not use non original accessories, in order to avoid danger.
4.3 test instruments must be well grounded.
The operation procedures 4.4 operating personnel must be familiar with the tester can be used.
4.5 in the whole measurement process, can adjust the other button.
4.6 after the test, to reset the State Party, detachable connection.
4.7 in order to keep the cooling effect of the instrument itself and normal operation, do not use a slit or vent blockage.
In the following 4.8 to avoid the use of the environment:
A avoid placement of direct sunlight, rain and moisture;
B please away from fire and heat, to prevent high temperature instrument;
C handling or maintenance, should be shut down and will remove the power line.
PC39A type digital ground resistance tester (high current) use and operation
5.1 of the initial state
Connect the instrument power supply, open the power supply switch, instrument current, grounding resistance, time display window for display Zero At this time, the instrument is in the initial state, and preheating 5min .
5.2 function keys and settings
5.2.1 alarm grounding resistance value set
Click the "set" button, the display window shows the current" A--- "The grounding resistance of display window to display a set of the grounding resistance of the alarm value, according to the" delta "button (increase) or" at "key (decrease) to get the required alarm grounding resistance and then click" setup "button to save the grounding resistance value at the same time to enter the alarm time set.
5.2.2 time setting
When the grounding resistance alarm value is stored at the same time, the current display window display" T--- "The time display test time window displays a set of press button" delta "or" at "button to get the required test time, and then click" Settings "button, which save time setting value at the same time to enter the test resistor compensation value set.
5.2.3 test resistance compensation value setting
When the preset value is saved at the same time, the current display window display" P.--- "Resistance display test resistance compensation value window displays the last, then according to the" delta "key or" at "button to get the required compensation value, and then click" Settings "button, which save the test resistor compensation value at the same time to enter into the open circuit alarm function set (No. 5.2.4 A). The resistance value is automatically set minus the compensation value. This function is used to deduct the error of line resistance and contact resistance measurement fixture caused. The instrument in the initial state, the clamp special butt joint measuring line, and then press the "start" button. If PC39A To the current adjustment knob, the test current reaches the specified value. And then read the display window showing the value of grounding resistance, is testing resistance compensation value. At the time, it is set to test resistance value can be compensated.
5.2.4 open set alarm function
When PC39A The test of resistance compensation value is stored at the same time, the current display window display" H--- "Resistance, open circuit display window to display the alarm function" ON "(the alarm) or" OFF "(cancel alarm). Press the button "delta" or "at" key to turn switch, come to a desired state, then click the "set" button, the instrument to measure the initial state.
5.3 steps
5.3.1 complete set, the instrument is in the initial state.
5.3.2 correct connection. A pair of (the two group) test line, coarse and fine measuring rod are respectively inserted into the end of the red line group tester" A "," A "End (thick line of measurement" A "On the line" A "); coarse and fine measuring rod group end are respectively inserted into the black line measuring instrument" B "," B "End (thick line of measurement" B "On the line" B "), clamp measurement on the other end of the line are respectively connected with the metal shell of the tested equipment protection can be touched and the ground terminal.
5.3.3 test procedure
5.3.3.1 single test press "start" button, "measuring" indicator light.
This time window displays the remaining time of test. If the analyte is qualified, test time, the instrument will issue a "beep" sound, and a "qualified" indicator light, display resistance value is measured by the value of grounding resistance in the window; when the measured resistance value is greater than the alarm settings, alarm indicator light, to be tested time the instrument to stop working, and sends out the sound alarm, then sentenced the analyte to nonconforming product. Then click the "reset" button, the instrument measuring the exit state, return to the initial state, the "measure" indicator.
5.3.2 continuous test
When the display window is displayed as" Zero ", click" start "button, can continuously tested, do not have to press the" start "button. For the real-time display of measurement results to determine value.
5.4 during the test, when the measurement of the grounding resistance exceeding the measurement range, the grounding resistance of the display window display "--" if there is no current on the measured object, that does not constitute a loop, the grounding resistance value is infinite, the instrument display "--".
5.5 during the test, when the test current is less than 5A When the "undercurrent" indicator light, when the test current is greater than 100A When the instrument automatically cut off the current, stop testing, and "flow" indicator light, grounding resistance display window display "--".
6 common faults and exclusion method
6.1 after the start of the power indicator light and display are not bright.
Bad a power socket inside the fuse and the elastic contact * *. Replace the fuse or fuse holder.
B power transformer AC9V To the motherboard socket loose. Replace the plug tight.
C test Seven thousand eight hundred and five The output should be 5V If there is no voltage, the voltage is too low or check the electrolytic capacitor and three terminal regulator rectifier tube, related.
6.2 no current.
The a test line and big alligator clip weld sealing off, bad contact or line break test, and" A "," A "," B "," B "Socket loosening or breakage, which connect with the socket socket screws not tightened.
B "measurement" switch is damaged, replace the switch.
C SCR board (board) relay HG4130 Damage, change element.
6.3 boot "current" lights.
The current adjustment knob back to zero, and then press the "reset" button.
6.4 if due to serious interference or improper operation of the "start", "reset" button, press the power switch, turn off the power, reboot, the instrument can work normally.
6.5 if the above fault still cannot be excluded or other fault, please contact with the company. Seven calibration
7.1 equipment required
0.5 level AC current meter, 2000W The standard resistance ( One %)
The calibration of 7.2 test current
The calibration of 7.3 grounding resistance
8 maintenance and maintenance
8.1 the instrument need regular maintenance and maintenance, can prolong life.
8.2 cleaning and maintenance of equipment, be sure to turn off the power switch.
8.3 instruments, test line and power line terminal, if damaged, please replace the same size in parts.
9 complete
PC39A type digital ground resistance test instrument
A special measuring line
A power line
Use a manual
A copy of the product certificate
10 other
10.1 products should keep the temperature in the room Zero C ~ Forty C, relative humidity of not more than Eighty %, and in the air does not contain harmful substances to cause corrosion.
10.2 strong shock tester in use, handling, storage should be avoided.
10.3 instrument and accessories from the factory delivery date Twelve Within a month, when the user is in full compliance with the use of the rules specified in the specifications, and the original factory seal intact condition, found that the tester can't normal use, then the manufacturer should be responsible for free to replace or repair.
10.4 manufacturing plants have the right to make changes without notice to the tester.
EFUP
Poisonous and harmful substances or elements contained in the instrument is not used in the normal conditions, leakage or mutation, users use the instrument will not cause serious pollution to the environment or causing serious damage to the person and property of the period Ten Year. The poisonous and harmful substances or elements of the name and content identification.
A body of XXX, XXX
Shell plating XXX X Eighty
LCD screen X Eighty X Eighty
Circuit board X XXX, eighty
Contactor X XXX, eighty
Transformer ( Pressure regulator X) XXX, eighty
switch X XXX, eighty
Ten: the concentration of the hazardous substance in all homogeneous materials in the parts are in SJ/T11363-2006 The standard limits for the following.
X said: this hazardous substance contained in at least one of the homogeneous materials. SJ/T11363-2006 Limit standard requirements.