KPM-1 ( Rus. K- capacitor P detachable Mashinka ) is a Soviet blasting machine powered by an inductor [1] [2] .
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It includes an inductor (low-power alternator ), two selenium rectifiers, a transformer, two capacitors, a neon bulb (indicator), contacts, resistances, a metal frame, a plastic case and a manual drive with a handle [2] .
How to use
The inductor is driven by a removable handle, the voltage from it is supplied to the doubling circuit via a transformer [1] [2] . The purpose of the doubling circuit is to increase the voltage to 1.5 kilovolts, it is assembled on the basis of a capacitor and two rectifiers [1] . The generated electricity is accumulated in the working capacitor (storage capacitor), reaching its full charge is indicated by a lit neon indicator, which simultaneously serves as a spark gap protecting the capacitor from breakdown [1] [2] .
In the electrical circuit of KPM-1, there is also a discharge resistance, which is turned off when the inductor handle is inserted into the machine [1] . When the handle is removed, the discharge resistance automatically drops the voltage from the working capacitor [1] . In addition, the circuit includes an automatic switch, which acts when the handle of the inductor rotates, closing the circuit of the rectifiers and the working capacitor [1] .
It is possible to check the serviceability of the blasting machine either with the help of a special remote control that is attached to the machine, or by blasting two electric detonators connected in parallel with an electric converter in the presence of additional resistance [1] [2] .
If the charged machine KPM-1 will not be used, then the capacitor-drive must be discharged [2] . The discharge can be carried out by removing the drive handle from the socket, which closes the working capacitor to discharge resistance [2] .
Performance Specifications
| Title | Value |
|---|---|
| Overall dimensions, mm | 103 × 87 × 166 |
| Max. allowable number of daisy-chain detonators in series | 100 |
| Max. allowable number of EDF detonators connected in parallel | five |
| Max. allowable number of series-connected detonators ED-8-56 | 100 |
| Max. permissible number of parallel connected detonators ED-8-56 | four |
| Capacitor capacity, microfarad | 2 |
| Operating voltage, V | 1500 |
Notes
- ↑ 1 2 3 4 5 6 7 8 Epov B. A. Current sources - explosive (blasting) machines // Fundamentals of explosive affairs (manual). - M .: Military Publishing House of the Ministry of Defense of the USSR, 1974. - P. 92. - 224 p.
- ↑ 1 2 3 4 5 6 7 Electric blasting method // Textbook of the sergeant of railway troops. Mine-disruptive business during the restoration and barrage of railways. Book 4. - M .: Military Publishing House of the Ministry of Defense of the USSR, 1963. - P. 59.
Further reading
- 1.1 Demolition machines // Means for blasting and disposal of ammunition. The manual on the material part and application .. - M .: Military Publishing House , 1979. - P. 3.
Links
- Veremeev Yu. G. Capacitor blasting machine KPM-1A U1 . saper.isnet.ru . Means of engineering weapons of the Soviet Army. Date of appeal April 24, 2017.
- Engineering training. Electric blasting method . www.zakon-grif.ru . Tula city public organization of special forces veterans. Date of appeal April 24, 2017.