An overview of impact resistance voltage tester and AB930-45 type winding
AB930-30 type winding interturn impulse withstand voltage tester is suitable for rated voltage 10500V The following small and medium-sized winding AC and DC motor insulation test, can also be used for transformer windings, electrical coil winding interturn insulation detection. A part of electric motor, electric tools, etc. are the main transformer coil winding, because the coil insulation material is not the same, especially the difference operator process level, making all kinds of coil products in production and handling will cause insulation damage in different degree, there are various forms of insulation failure between coil and winding in turn, these weak links and before breakdown or failure in not meet certain conditions, the inherent inductance of the coil or winding L The quality factor Q The value of distributed capacitance and resistance and basically had no obvious change, using conventional means usually could not be identified, which planted a hidden trouble to the coil. Therefore, the inter turn insulation performance is the key parameters of motor, transformer etc.. Our country GB755-87 "Basic technical requirements of rotating machine", GB14711-93 In the "general safety requirements" and other small rotary motor of the motor must be finished and semi-finished products for impregnation before and after interturn insulation withstand voltage test.
At present, both at home and abroad for the detection of motor, transformer, electric winding quality of the commonly used method of pulse comparison method. Between the coil and applying a high voltage pulse is very short, used to simulate the impact of switching lightning wave, due to the high voltage pulse of short time energy is small, is a kind of nondestructive test, through the sampling analysis, can directly, quickly and correctly determine winding inter turn short circuit of various abnormal fault.
Interturn instrument can detect the following fault:
1) interturn insulation breakdown (interturn short circuit)
2) corona discharge
3) winding
4) the number of turns of difference
5) winding is connected to the wrong line, line fault block
6) the breakdown, short
The main technical parameters of impulse withstand voltage tester two, AB930-45 type winding:
1. power supply voltage: 220V . 5% , 50/60HZ
The 2. shock wave frequency: the frequency of 50HZ When 6.25HZ The frequency of power supply. 60HZ When 7.5HZ
The 3. shock wave voltage: 1~30KV The range can be adjusted continuously
4. digital peak voltage display: 1~30KV . 5%
5. storage capacitor: Zero point one Mu F (or according to user requirements)
The maximum output energy of 6: 45J
7. humidity: 0~40 C
Relative humidity: less than 8. 80%
9. dimensions: L * B * H650mm * 650mm * 1750mm (including roller)
Weight: about 10. 150kg
11. sampling oscilloscope technical parameters refer to attachment (manual)
The working principle of high voltage tester, the impact of three AB930-45 type winding
AB930-30 type winding interturn impulse withstand voltage tester circuit structure as shown in the block diagram. The machine is composed of digital sampling oscilloscope and mainframe. The working process is: 220V After the power supply a sampling oscilloscope, another way for the host, the thyratron filament preheating. Preheat Ten Minutes later, the host can enter the test condition. High pressure device starts working, high voltage power supply charging of a storage capacitor with high voltage rectifier. At this time, the thyratron trigger unit receives signals, the energy storage capacitor of power by thyratron, a current limiting resistor to test output terminals, a high voltage pulse applied to the measured coil, generating shock wave attenuation in the test coil, through the sampling circuit to the sampling oscilloscope, synchronous tracking by oscilloscope. Clear and stable display attenuation waveform, through the coincidence observation of two shock waves and discrimination of interturn insulation.
Four, AB930-45 type winding interturn impulse withstand voltage tester, the left panel (local) and right (local) and control key
The oscilloscope the low-voltage power indicator indicator and the current indicator
The pressure indicator, indicator lamp, preheating test indicator, oscilloscope
The power switch, 30, buck boost button button the test button
panel
The pedal switch socket of the power socket and ground terminal
On the right side of (local)
The operation method of impulse voltage resistance tester five, AB930-45 type winding
AB930-30 type winding interturn impulse withstand voltage tester at work will produce high voltage, especially when using Caution!, please read the manual carefully before use. The operating personnel must be trained. In addition to operating personnel, other personnel should not stay in the test site.
1. the first cabinet must be reliable grounding (right below a ground terminal), then access 220V power, and then access the pedal switch.
2. through the power switch, the power indicator light, press button to indicate to the low blood pressure
0, then connect the sample to the right terminal (refer to six connection method. Wiring method).
3. adjust the oscilloscope parameters and menu (specific operation instructions refer to the oscilloscope)
4. to preheat indicator light, tread down pedal switch, press the test button, press the button and boost the high-pressure indicators value for testing voltage value, and then adjust the oscilloscope, according to relevant regulation knob ring damping swing wave (the waveform is stable and clear), and then press the button storage oscilloscope, save the waveform. Loosen the test button and the foot switch, remove the sample, then the same type of test, tread down pedal switch, and press the test button, then there is an oscilloscope waveform through two waveform coincidence degree to determine whether there are hidden dangers of interturn phenomenon, wave parameter reference on photos and experience analysis of inter turn hidden reasons.
Resistance wiring method of impulse voltage tester, six AB930-45 type winding
Seven, AB930-45 type winding impact resistance voltage tester sets
Impulse withstand voltage tester winding One platform
An instruction manual One share
Foot switch One only
Power cord .1 root
Test line One set
Product certificate One share
The other eight.
1. the instrument should be to keep the temperature in the room Zero C ~ Forty C, relative humidity of not more than
80%, and in the air does not contain harmful substances to cause corrosion.
2. warranty period: from the delivery date, for a period of one year.
In 3. the company product life-long maintenance.
4. the warranty period, due to improper operation of the user caused by damage to the instrument, maintenance fee.
5. manufacturing plants have the right to change without notice of the instrument.
DS5022ME digital oscilloscope operating instructions
Connect the power (1. AC220V Press the power switch, etc.) 6S After the emergence of the surface at the top right hand corner AUTO Key to the display in the upper left corner AUTO
2. click on the right TRIGGER Box MENU The right button, the menu will appear, as shown below. If the menu is not correct please click the corresponding button, reset menu to the right now
If you use 3. CH1 According to the passage, please OFF Clear menu button, and graphics in each scan line, then click the CH1 button, then the following menu, if the menu is not correct please click the corresponding button, reset menu to the right now
More than 4. menus are correct, down to determine the parameters in the chart below CH1 All 500mVTime20.000us, adopt SCALE/ Turn knob, regulation CH All 5V - 2.00mv, adopt SCALE Turn knob adjustment Time50.00S- 20.00nS The following parameters shall prevail
5. then you can press the instrument operation method of interturn began operation, the surface oscillation wave oscilloscope, then the oscillation wave size (amplitude), length (Pin Kuan) by up and down SCALE About. SCALE Turn the knob to change
6. if you want to make the wave up and down, move around, please POSITION Turn the knob to change
7. if the waveform is not stable, please LEVEL Turn the knob to change
8. note that the other button can not move as much as possible not to move
9. if the storage method, in determining a good waveform on the oscilloscope, press" RET "Key, then press" save "corresponding keys on the waveform storage oscilloscope.