A universal breakdown installation, or, as it is also called, UPU, is an almost indispensable device, especially when it is necessary to work with electrical equipment. The use of the UPU is a guarantee of safety during any start-up of an electric machine, which is characterized by a very high voltage and also very high power.
General description of UPU
If we talk about the general purpose of these plants, they are used to conduct systemic and stable tests of existing insulation of electrical equipment. In addition, you can also check electrical materials. The check is carried out by adjusting the alternating current of the set parameters in the selected range.
For those who are not very well versed in the breakdown installation and in this matter, it is enough to know that the consultants in the store will be able to pick up certain characteristics of this device. It is important only to explain exactly why the device is purchased, as well as any other additional information about the test object.
Scope of use
It is worth noting that for the most part breakdown installations are used in two large areas of human activity. The first sphere is associated with energy, that is, the energy market, and the second with electrical products, everything else that does not apply to energy is included in this sphere. This versatile equipment copes with all tasks in one and the other field.
However, it is worth noting that there is another area of ββuse of universal breakdown installations. A separate category includes scientific and research-and-production electric laboratories. Most often in such places they are engaged in the manufacture of some kind of experimental electrical equipment. Work with the UPU breakdown installation is also associated with the fact that it is designed to reduce the risk that arises from the fact that high voltage and operating power indicators of the tested devices are used for work. Timely checks of the insulation of already operating equipment also play a significant role, not only in maintaining the health of personnel, but also in preventing the failure of expensive equipment. Quite often it happens that some equipment is created in a single copy and is used to perform specific tasks in the chosen direction.
In any case, it is necessary to study the manual for the breakdown installation (this is the instruction for the use of safety equipment, which is the UPU). We can add that the universal installation can be used to check not only equipment, but also, for example, rubber gloves or boots for the possibility of conducting electric current through them.
Installation UPU-10M
The high-voltage measuring UPU-10 breakdown installation is intended mainly for generating a constant and alternating sinusoidal current voltage, the frequency of which is 50 Hz. In addition, the installation is also great for measuring voltage and power of both AC and DC when testing or diagnosing insulation cables.
Features and specifications
As for the specific features and advantages of this UPU, they are as follows:
- all voltage and current measurements are carried out with high accuracy;
- there is a built-in discharge device that can be used if it is necessary to remove the charge from the capacitive device;
- the device is able to automatically switch alternating / direct current if necessary;
- the operating mode can also be manual or automatic and a timer is present;
- the control interface is quite simple and intuitive, and the graphic display is large;
- there is an intelligent limitation of the charging current to avoid breakdown of the capacitive load of the equipment;
- the weight of the device is relatively low and is only 18.5 kg.
The measuring range of the alternating sinusoidal voltage is in the range from 0.10 kV to 10.00 kV. The same range is present when measuring voltage with negative polarity. The measurement range of the rms current values ββand ordinary current values ββis also the same and is from 0.03 mA to 10.00 mA.
Appointment and features of UPU-1M
As for the breakdown unit UPU-1M, it is intended for insulation testing of electrical equipment and materials. For tests, an alternating sinusoidal electric current with a frequency of 50 Hz is used. In addition, a rectified voltage of negative polarity can be used, which is regulated in the range of 0-6 kV, and the output current is 0-100 mA.
As for the features and advantages, here we can say that this model has the same qualities as the UPU-10M. High precision, automatic switching of the operating mode, intelligent charge limitation, and a built-in discharge device are also highlighted here. Even the weight of the device remained the same and amounts to 18.5 kg.
Separately, we can say about the technical characteristics.
- The average service life is 5 years.
- MTBF under normal conditions of use is at least 8,000 hours.
- The normal power supply for this device is 220V Β± 22V and 50 Hz Β± 10 Hz.
- The maximum power that this device can consume is 900 VA.
- Dimensions UPU-1M - 360 x 155 x 395 mm.
UPU GPT
You can consider the GPT breakdown installation using the model 79901 as an example. This device is multifunctional. A breakdown test with alternating voltage can be carried out from 100 V to 5 kV in steps of 2 V. It is possible to measure the leakage current in the range from 2 to 200 mA, while the constant leakage current can be measured in the range from 2 to 40 mA. The device is able to display a graphical image of the results obtained after the test.
Features and installation options
To begin with, the output power of this device is 500 VA. As already mentioned above, the device displays a graphical display of the test results, and also has output amplifiers with PWM technology. It is possible to record, as well as subsequent automatic playback of profiles. The number of saved profiles is 100 cells. The liquid crystal display is just designed to display graphic images.
This model is significantly different from others in that it has a very high level of protection. There is a "Self-test / cut-off" mode of the output voltage in just 150 ΞΌs and several other functions. During the test, the device also adjusts the voltage too high. As for the adjustable voltage rise time, it takes from 0.1 to 999.9 s. On the rear panel of the device are duplicate output connectors. There is the possibility of remote control, as well as regulation. At the end, we can add that this device weighs almost 10 kg more than UPU-1M - 27 kg.
Conclusion
Summing up, we can say that universal breakdown installations are quite powerful and good equipment, which is not in vain that has become widespread. With the help of these installations, most inspections of power and electrical equipment can be carried out, and besides this, the accuracy of these inspections is always quite high.
The quality of these devices is also evidenced by a large number of positive reviews. It is noted that all of the listed advantages and characteristics of devices are true. The only drawback, according to buyers, is that dealing with this device is quite difficult, especially if a person does not have certain knowledge in electrical engineering.