1ZHZ4C digital high voltage insulation resistance tester overview
ZHZ4C digital high voltage insulation resistance tester is suitable for all kinds of motor, instruments, household appliances and the withstand voltage test and insulation resistance measurement; also suitable for use on the production line. The tester is flexible and easy to use, safe and reliable, good performance and easy maintenance. Is in line with the GB4793.1-1995 "Measurement, control and laboratory use - Safety requirements for electrical equipment One Part 1: General requirements "and GB4706.1 "Safety of household and similar electrical test equipment test" General requirements of national standards in the relevant provisions required. This instrument is carried out Q/YXYZ2ZHZ A series of high voltage insulation resistance tester standard enterprise.
2ZHZ4C digital high voltage insulation resistance tester specification and technical characteristics
2.1 conditions of use
temperature Zero C ~ Forty C
The relative humidity is not more than Eighty %
No strong electromagnetic interference source, without a lot of dust and corrosive gas, good ventilation.
2.2 power supply 220V Tolerance. Ten %, 50Hz .
2.3 product features
Automatic completion of the measured voltage withstanding test and insulation resistance measurement a a wiring.
B test program set, can be a single test ( Pressure or insulation ) And continuous testing; ( " I - P "After the first insulation or pressure" P - I "After the first withstand voltage insulation ) .
C can set the output voltage and current of high voltage part of the alarm value and test time; rated voltage, insulation resistance of insulation resistance value and alarm test time.
D can automatically determine whether the detected object qualified sound.
The output voltage of e high voltage part of the part 50Hz Sine wave; rated insulation voltage resistance part for DC voltage.
F according to user requirements can be increased by wire interface.
2.4 see tester technical parameters.
capacity KVA0.75
High voltage output voltage ACkV0.5 ~ Five or Zero point five ~ Three Instantaneous pressure
The basic error. (5%r+3d)
Breakdown current MA0.5 ~ 19.9/20 ~ One hundred
Tolerance. (5%r+3d)
Test time S1 ~ Ninety-nine
The insulation resistance of rated voltage DCV500/1000
Tolerance. Ten % Fs
measuring range M Omega Zero point one ~ 1.999/2 ~ 19.99/20 ~ 199.9/200 ~ One thousand nine hundred and ninety-nine
Tolerance. (5%r+3d)
Alarm range M Omega Zero point one ~ 1.999/2 ~ 19.99/20 ~ 199.9/200 ~ One thousand nine hundred and ninety-nine
Tolerance. (5%r+3d)
Measuring time S1 ~ Ninety-nine
2.5 dimensions One * B * H , Mm : Four hundred and forty * Three hundred and ninety * Two hundred and thirty-five
2.6 weight 21.5kg
3ZHZ4C digital high voltage insulation resistance tester structure and working principle
3.1 working principle
The test instrument is composed of three parts: voltage resistance, insulation resistance and switching logic. High voltage part is responsible for the measurement of resistance to voltage circuit of voltage and current by digital display. The leakage current exceeds the set value, automatically cut off the circuit, and alarm; resistance of insulation resistance and insulating part is responsible for measuring circuit by digital display. If the test time after the end of the insulation resistance is less than the set value alarm;
Logic switch part testing according to the testing procedures selected by the user.
3.2 function key layout
1 "insulation resistance" display window
2 insulation measurement "time" display window
3 insulation alarm indicator lamp
4 insulation measurement indicator
The 5 insulating "qualified" indicator
6 "high voltage" display window
7 leakage current" ( The current alarm ) The display window
8 high voltage test "time window"
9 high voltage measurement indicator
10 high voltage "qualified" indicator
11 high voltage alarm indicator
12 "high" output
13 "ground" end
14 high voltage alarm current regulating potentiometer
15 test "project" key
16 high voltage "alarm" button
17 high voltage current range selection button
18 high voltage "time dial settings"
19 voltage adjustment knob
20 insulation resistance voltage select button
21 insulation resistance "alarm" dial
The 22 insulating "time setting dial"
23 "insulation resistance range selection key
24 "reset" button
25 "start" button
26 "power switch" ( With indicator light )
1 power socket Two Fuse
3 grounding socket Four Nameplate
5 "wire" socket (optional)
4 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.
The 4.3 instrument must be well grounded, not allowed to tie in the tap water pipe.
4.4 the instrument to generate sufficient pressure caused casualties. In order to prevent the electric shock accident, before using this equipment, please wear insulating rubber gloves, foot pad insulation rubber pad, and then the single hand operation.
4.5 instruments in the testing condition, please do not touch the test line, the object to be measured, and the output end of the test stick.
4.6 do not make the short circuit test line, the wire line and the AC power line, lest the whole instrument charged.
4.7 when testing a sample, to replace another object to be measured, should be the instrument under the "reset", "measurement" lights out and showing the value of voltage" Zero "State. Special note: during the test, please do not touch the high-voltage testing head, so as to avoid accidents.
4.8 when the power switch is switched off, such as open again, you need to wait a few seconds later, do not put the power switch continuity
Do the action of opening and closing, in order to avoid the wrong actions damage the instrument.
4.9 avoid using in the following conditions:
A, to avoid the rain wet and placed in direct sunlight.
B please away from fire and heat, to prevent the high temperature of the machine.
C handling or maintenance, should be shut down and will remove the power line.
5ZHZ4C digital high voltage insulation resistance tester and operation
5.1 instruments of initial state
The power supply is switched on, the counterclockwise rotation of the voltage adjust knob in the end, the "power" switch is in the "on" position, power indicator light, the instrument is in the initial state.
5.2 function set
5.2.1 high voltage part
The test project selection "key in single" pressure "gear.
5.2.1.1 alarm current (leakage current)
A range selection
According to the current alarm value, press the corresponding current voltage resistance "current range selection keys.
B alarm set
Hold the high voltage "at the same time the alarm set key rotation resistance voltage alarm current regulating potentiometer, the leakage current value for the current alarm display window to display a desired value, and then let go of the" alarm "button. Is the current alarm set value is.
The output voltage of 5.2.1.2 set
Choose the withstand voltage test of "time" display window showing the value 60s And press the "start" button, "high voltage measurement indicator lights. According to the required test voltage, the clockwise rotation of the voltage adjust knob, and observe the "high voltage" display window display value reaches the required voltage, stop the voltage adjust knob, and maintain the voltage adjust rotational position unchanged, click the "reset" button, then the output voltage setpoint after.
The "start" button. If you need to change the test voltage, then repeat the above steps.
5.2.1.3 test set
According to the required test time, the voltage time setting "dial" + "or" - ", on which the numerical and the withstand voltage test of" time "display window shows the value at the same time to achieve the required test time value, press the" stop voltage time setting "dial" + "or" "the test time, the set value of the setting is finished.
5.2.2 insulation resistance part
The test project selection in single "key" insulation "gear.
Selection of the rated voltage of 5.2.2.1
According to the rated voltage value, press the corresponding insulation resistance voltage selection button.
5.2.2.2 insulation resistance
A range selection
According to the measured value of insulation resistance, press the corresponding "insulation resistance range selection button in the corresponding range.
B alarm set
According to the alarm value of insulation resistance, insulation resistance "alarm" dial "+" or "-" to the value of the desired value by pressing the alarm. Then the insulation resistance of the alarm set value is.
Note: set the alarm resistance value must be included in the selected range:
Press the select key range" Two " 0.1M Omega ~ ..1.999M Omega
Dial the corresponding number 0100~1999
Press the select key range" Twenty " 2..M Omega ~ ..19.99.M Omega
Dial the corresponding number 0200~1999
Press the select key range" Two hundred " 20 M... Omega ~ 199.9M Omega
Dial the corresponding number 0200~1999
Press the select key range" Two thousand " 200.M Omega ~ 1999..M Omega
Dial the corresponding number 0200~1999
According to the case : Insulation resistance value alarm 10M Omega
1) range switch" Twenty " 2) Dial for 1000,
Insulation resistance value alarm 500M Omega
1) range switch" Two thousand " 2) Dial for 0500,
5.2.2.3 testing time
According to the required test time, press the "set" insulating dial "+" or "-", on which the numerical and insulation "time" display window shows the value at the same time to achieve the required test time value, stop the insulation "time setting dial" "+" or "-" is. The test finished setting time.
5.3 according to the corresponding key required to press the test project selection "key test procedures are as follows.
I P After the first insulation withstand voltage P - I After the first voltage insulation
Individual single voltage insulation insulation voltage
5.4 steps
5.4.1 in determining instrument is in the initial state of high-pressure test line ( gules ) One end is inserted into the instrument
The "high" output end, the other end is connected with the measured electricity parts or power input terminal; and the other a testing ground wire (black) end is inserted into the instrument grounding end and tighten the nut, and the other end of the analyte shell (metal) or the power input terminal is connected to ground (if the object to be measured with the earth or the instrument is connected to the ground, the ground strap must be with it).
5.4.2 carefully check the wiring is correct, can press the "start" button, the instrument was tested according to the test program selected by the user, the test status is as follows:
5.4.2.1 single test condition
A - single pressure pressure
The high voltage measurement indicator lights, "high voltage" display window shows the value of the test voltage, the window is displayed through the analyte on the current leakage current display leakage current, voltage withstanding test time display window display test time setting value (countdown). If the analyte in the test without breakdown or leakage current is less than the set alarm value, the setting time, judged as qualified products, while high voltage "qualified" indicator light, and cut off the output voltage; if the analyte in the test is the breakdown or leakage current is greater than the set value alarm current when found nonconforming product is high voltage alarm indicator lights, buzzer alarm, output voltage (HV) was immediately cut off automatically. In order to eliminate the alarm must press the "reset" button, otherwise the instrument cannot be carried out the next test.
B - single insulation insulation
The insulation resistance measurement indicator light. "Insulation resistance" display window to display the measured value of insulation resistance (such as the insulation resistance of the object to be measured is greater than the range, the currently selected "insulation resistance" display window display One thousand nine hundred and ninety-nine ), insulation measurement "time" display window display setting time of insulation resistance (countdown). To set the time, such as the insulation resistance of the object to be measured is greater than the set value, the insulation resistance is "qualified" indicator light; on the contrary, the insulation resistance alarm indicator lights, buzzer alarm sound, alarm sound in order to eliminate the need to press the "reset" button, otherwise the instrument can not be the next test.
5.4.2.2 continuous test status
A" I - P "After the first insulation withstand voltage
According to the instrument 5.4.2.1/b To test, and then automatically enter 5.4.2.1/a Test status.
B" P - I "After the first withstand voltage insulation
According to the instrument 5.4.2.1/a To test, and then automatically enter 5.4.2.1/b Test status.
No matter 5.4.2.3 instrument to complete the single test or continuous testing, must press the "reset" button, the instrument is in the initial state.
6 common faults and troubleshooting
6.1 no power supply indicator, the power indicator light is not bright
A please check the power supply is normal, if not normal check exchange 220V And, whether the scope of normal use.
B please check whether the fuse is damaged, if the fuse is damaged, please replace the same type of fuse.
C please check whether the power transformer output, if there is no output, replace the power supply transformer.
Please check the D voltage regulator circuit Seven thousand eight hundred and twelve If damaged, if damaged please change Seven thousand eight hundred and twelve .
6.2 high voltage part
6.2.1 boot alarm
A first press the "reset" button, if not eliminate the alarm, then continue to the following steps.
Please check the B leakage current switch board sampling resistor is damaged, if damaged, please replace the corresponding sampling resistor.
Please check the C LM324 Whether there is damage, if damaged, please replace LM324 .
6.2.2 boot voltage indicator
Please check the a SCR is damaged, if damaged, please replace the same specifications of scr.
Please check the B. Three thousand and sixty-one If damaged, if damaged, please replace Three thousand and sixty-one .
6.2.3 boot in test mode
Please check the A NE556 If damaged, if damaged, please replace NE556 .
Please check the B start button is damaged, if damaged, please replace the start button.
6.2.4 instrument start reset failure
Please check the A NE556 If damaged, if damaged, please replace NE556 .
Please check the B start, the reset button is damaged, if damaged, please replace the start, reset button.
6.2.5 boot press the start button, measuring the lamp, but no voltage indicator
Please check the a high voltage transformer is damaged, if damaged, please replace the high voltage transformer.
Please check the B voltage monitor is not damaged, if damaged, please replace the voltage display.
The police immediately after the start of 6.2.6
Please check the current sampling resistor a select range corresponding to the key is damaged, if damaged, please replace the corresponding resistance.
Please check the B Two hundred and twenty Omega /5W The resistance is damaged, if damaged, please replace the resistance.
Please check the C LM324 Whether there is damage, if damaged, please replace LM324 .
The 6.3 insulating part
6.3.1 instrument start, no rated voltage
Please check the A R24 , R27 , R30 , R33 , R23 , R26 , R28 , R31 , R32 , R29 , R35 , R37 Whether there is damage, if damaged, please replace the corresponding resistance.
Please check the B D15 , D16 , D25 , D26 If damaged, if damaged, please replace the corresponding diode.
Please check the C T1 The oscillation ring is damaged, if damaged, please replace the corresponding oscillation coil.
The 6.3.2 instrument has started, the rated voltage, insulation resistance indicator
A check the insulation resistance of the display is damaged, if damaged, please replace.
Please check the B RP1 , RP2 , D17 , D18 , C21 , R38 , is damaged, if damaged, please replace the corresponding device. 6.3.3 The instrument starts, the measured value is less than the alarm set value, test time, alarm instrument.
Please check the A IC7 If damaged, if damaged, please replace IC7 ( Three hundred and fifty-eight ).
B please check whether the alarm lamp light, if the alarm lights, buzzer sound, please replace the buzzer; if the alarm lights, check IC3 If damaged, if damaged, please replace IC3 ( Four thousand and thirteen ).
7 calibration
7.1 high voltage part
The test project selection "key in single" pressure "gear.
The output voltage of 7.1.1
The instrument is in the initial state, wiring.
Press the "start" button, "high voltage measurement indicator lights, clockwise rotation of the voltage adjust knob, the pressure gauge reading 3kV At the same time, write down ZHZ4C "High voltage" display output voltage value window, basic error and calculate the output voltage shall comply with table One In the requirements, such as ultra poor adjustable plate" RP4 "To meet the requirements of the potentiometer. Then click the "reset" button, and then the method respectively. 1kV , 2kV , 4kV and 5kV Should be in accordance with the table One The basic requirements of the error of output voltage. Check the end must click the "reset" button.
7.1.2 alarm current
The instrument is in the initial state, the first set in the current high voltage alarm 1mA According to the table. Three Select the corresponding load resistance,
The current alarm MA0.51251020100
Load resistance K Omega /W1000/1500/1250/1100/120/525/105/5010
Press the "start" button, "high voltage measurement" indicator light, slowly rotating the voltage adjust knob to 450V About the observation of AC current meter on the current value, and then very slowly rotating the voltage adjust knob, the instrument alarm alarm before the read current value, and calculate the current alarm allowance in accordance with table One In the request, and then click the "reset" button. According to the above method, different current value and replacing the corresponding load resistance, check the alarm current remaining points should be consistent with the table One Request. Check the end must click the "reset" button.
The 7.2 insulating part
"Project" key in the single "insulation" gear.
The rated voltage of 7.2.1
The instrument is in the initial state, wiring.
Rated voltage calibration wiring
The insulation resistance of "voltage" key in 500V File, press the "start" button, the electrostatic voltmeter reads the voltage value, and the calculation error of the rated voltage should be consistent with the table One The requirements, such as ultra poor adjustable plate" RP3 "To meet the requirements of the potentiometer. Then click the "reset" button, and then according to the above method, check 1000V The error should be in accordance with table One Request.
7.2.2 insulation resistance
The instrument is in the initial state, wiring.
Calibration of wiring insulation resistance
The insulation resistance of "voltage" key in 500V File, press the "start" button. To observe the "insulation resistance" display window display 10M Omega, if no adjustable printing plate RP1 The potentiometer to conform to the requirements, and then press the "reset" button. Then the resistance change 1M Omega, 100M Omega, 1000M In accordance with the above procedure for correction.
8 complete
ZHZ4C digital high voltage insulation resistance test instrument
A power line
A set of test bar
Use a manual
Product certificate
9 by definition
10 other
10.1 instruments in transport and use, should be careful to avoid severe long-term vibration.
10.2 instruments should be kept indoors, the ambient temperature is Zero C ~ Forty C, relative humidity of not more than Eighty %, and in the air should not be sufficient to cause corrosion of harmful substances.
10.3 instruments from the user purchase date Twelve Within a month, when the user fully comply with the use rules specified in the specification, and the user does not attempt to change the instrument internal structure, it is found that the instrument is not working properly, give the factory responsible for replacement or repair.
10.4 manufacturing plants have the right to make changes to the instrument specifications without notice.
L 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: the limited requirements of the content of toxic and harmful substances in at least one of the homogeneous materials beyond the SJ/T11363-2006 standard.