1 ZHZ8E power frequency withstand voltage tester (desktop) Summary
The withstand voltage tester is suitable for all kinds of motor, electrical appliances, instruments and appliances, safety and power system voltage and leakage current test. The instrument has the advantages of convenient operation, safe and reliable, good performance, convenient maintenance. Is in line with the GB4706.1 Safety of household and similar electrical appliances "and" General requirements GB9706.1 "General medical electrical safety requirements" and GB4943 , GB4793 Test and other relevant provisions of the national standard requirements of test equipment required.
2 ZHZ8E power frequency withstand voltage tester (desktop) Specification and technical characteristics
Two point one The basic error, output voltage, leakage current, current and preset alarm tolerance.
Model ZHZ8E-5
digital display AC
capacity KVA2
output voltage KV0-5
The basic error ( Five % R+3d )
leakage current MA5-400
Tolerance (. Five % R+3d )
The current alarm MA5-400
Tolerance (. Five % R+3d )
Two point two The characteristics of products
A Can display in the test samples on the leakage current value.
B Has the time preset and display test time countdown.
C Can be arbitrarily set the alarm value of current.
D Output waveform 50Hz Sine wave.
Two point three The 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.
Two point four AC power supply 220V Tolerance. Ten %, 50Hz .
Two point five Size: L * B * H433 * Three hundred and twenty * Two hundred and twelve
3 ZHZ8E power frequency withstand voltage tester (desktop) The structure and working principle
Three point one Working principle
Withstanding voltage tester is composed of high voltage boost circuit (test voltage to adjust the output energy required), leakage current detection circuit (set alarm current) and value indicating instrument (direct readout output voltage and leakage current value < The alarm or breakdown current value ">> ). In the test
Two
The value indicator shows that the measuring circuit of high voltage source
The regulator control logic, the analyte in the required time under the provisions of the testing voltage, automatically cut off the output voltage instrument; once the breakdown, i.e. the leakage current exceeds the set alarm current will alarm. Start reset
Three point two The instrument function key layout:
One " A Connected line column Two " B Connected line column
Three " B Connected line column Four Power socket
Five Fuse holder Six "Ground" terminal
Seven " G "Terminal
4 ZHZ8E power frequency withstand voltage tester (desktop) Safety precautions
Four point one Before using please read the instructions and follow the instructions step in operation.
Four point two Do not use non original accessories, in order to avoid danger.
Four point three The instrument and the measured object must be well grounded, not allowed to tie in the tap water pipe.
Four point four This instrument has high enough for police casualties. In order to prevent electric shock accidents, before using this equipment, please wear insulating rubber gloves, foot pad insulation rubber pad, and then the relevant operation.
Four point five When the instrument is in the test mode, please do not touch the test line, the measured object, and the output end of the test stick.
Four point six Don't make the short circuit test line, the wire line and the AC power line, lest the whole instrument charged.
Four point seven When testing a sample, to replace another object to be measured, should make the test instrument in the "reset" and "test" lights out and showing the value of voltage" Zero "State.
Four point eight When the power switch is switched off, such as open again, you need to wait a few seconds later, don't take action for the power switch on and off, in order to avoid the wrong actions damage the instrument.
Four point nine The instrument no-load test, leakage current will have value.
Because of the low end instrument current sampling circuit in high voltage circuit (near ground loop).
When the voltage to high voltage, the leakage current of high voltage transformer itself through the core into the current detecting circuit, caused by no-load,
There is little indication of leakage current. This is a normal phenomenon, does not affect the test accuracy.
Four point one zero Avoid using in the following circumstances:
A. Avoid placing the sun. The rain or damp place.
B. Please stay 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.
5 ZHZ8E power frequency withstand voltage tester (desktop) Use and operation
Five point one Preparing for use
Connect the power supply, the power switch is in the "on" position. At this time, display output voltage, leakage current and time of the digital tube and the "test unit" indicator Ying Liang.
Five point two Function keys and settings
5.2.1 The current alarm set
According to the current alarm value selection alarm current range, press the "leakage current test / Preset key, adjusting the leakage current preset potentiometer, and observe the leakage current display value reaches the desired value alarm window, stop adjustment leakage current preset potentiometer, and then release the "leakage current test / Preset "button, the leakage current is set.
5.2.2 Timing setting
The "timing" button in the "on" position. According to the required test time, a timing dial on the numerical value observed at the same time to achieve the required test time test time window, stop toggle dial preset timing, timing is set.
5.2.3 Through the high voltage auxiliary line on the back plate of the instrument" A "" B "" C "" G "Terminals are respectively connected to the motor load test
On the connection method.
Five point three Operation steps
A. First press" ABC-G "Key, then press the" start "button, through the voltage adjust knob, rise to the voltage the voltage value required to wait for test time, if no alarm, then test qualified, (if the alarm, the sample unqualified) press the" reset "press the button.
B. If you need to do the motor phase voltage, please click" AB-CG "Key or" A-BCG "Key.
C. The test is carried out in the "start" button, and wait for test time, if no alarm, the test voltage and unity
Grid, click the "reset" button.
D. Until the sample motor test is completed, then press the "discharge" button, the end of the testing process. And then put on a sample motor load, for a sample test.
6 ZHZ8E power frequency withstand voltage tester (desktop) Complete
Withstanding voltage tester One platform
Power cord One root
High voltage auxiliary line Four root
An instruction manual One share
Product certificate One share
Seven Other
Seven point one The instrument 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.
Seven point two Since the date of purchase instrument users Twelve Within a month, when users use fully comply with the rules in the specification, and the user does not attempt to change the instrument internal structure, it is found that the instrument can not work normally, the factory responsible for free to replace or repair.
Seven point three Factory has the right to make changes without notice of the instrument.
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: this hazardous substance contained in at least one of the homogeneous materials. SJ/T11363-2006 Limit standard requirements.