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L3-3 Russian Military High-End Tube Tester New NOS with All Cards

£550.00 or Best Offer Sold, £199.00 Shipping

Seller: elisejev2010 (581) 100%, Location: Moscow, Ships to: Worldwide, Item: 273192243345 L3-3 (Л3-3) Russian Military High-End Tube Tester , new, NOS. Produced 1975 . by plant of the Ministry of Electronic Industry of the USSR (завод Министерства электронной промышленности СССР) Serial No 25617.New, stock storage condition. Full set of cards and documentation in Russian. Some information will be provided in digital format also. Tested, fully working condition.Weight 22 kg. with wooden case 30-32 kg This instrument is not for hobby use, you need to be highly skilled. How to measure you can find on youTube and internet. Will ship worldwide with EMS Russian Post approximate price for EU Price with case 130 € without 105 € Additional custom fees might be applied in your country. (i can issue invoice with lower value if necessary) Description of the device L3-3 is designed to measure the main electrical parameters of electronic tubes, as well as to remove static characteristics. The device makes it possible to measure the parameters of receiving-amplifying and low-power generator (with power dissipation at the anode of up to 25 W) lamps, kenotrons, diodes and zener diodes.The meter can be used in warehouses and bases of consumers of electronic lamps, in repair shops, laboratories, and also at enterprises developing and releasing radio engineering equipment.The device can be operated in climatic conditions: at an ambient temperature of -10 to + 40° C and a relative humidity of 65 ± 15%.Note. If the meter is brought into a room with an ambient temperature above 0° C from a street or from another room where the air temperature is below 0° C, then the meter must be kept in this room for at least 2 days before use. Specifications The device measures the following parameters in radio tubes:For diodes:- emission current or so anode;In triodes, double triodes, tetrodes, pentodes and combined lamps:Anode current;- current of the second grid;- reverse current of the first grid;- steepness of the anode current characteristic:- the steepness of the characteristics of the heterodyne part of the frequency-conversion lamps;- the anode current at the beginning of the characteristic or the closing voltage of the grid;For gas stabilizer voltages:- ignition potential;- Stabilization voltage;- change in the stabilization voltage when the current is changed;In kenotrons:- rectified current when power is supplied from the mains at a frequency of 50 Hz.And as for all types of lamps:- leakage current between the cathode and the heater at voltages of 100 and 250 V (plus at the cathode, minus the heater);- leakage current between the electrodes (cathode and grid first, grid first and grid second) at voltage 100 and 250 V. The device supplies the following voltages to the electrodes of the tested lamps: For heating - from 1 to 14 V at a current of 1.2 A;On the grid first - 0, from -0.5 to 65 V and fixed voltage -100 V;On the grid 2 - from 10 to 300 V at a current of up to 15 mA;On the anode - from 5 to 300 V at a current of up to 100 mA;Variable voltages for the tested kenotrons - 2х350, 2х400, 2x500 V.The scales of the electrical measuring instrument have the following nominal values: For measuring the heating voltage - 3; 7.5; 15 V,To measure the voltage on the grid 1 - 1.5; 3; 7.5; 15; thirty; 75 V;To measure the voltage on the grid 2 - 75; 150; 300 V;For measuring the voltage at the anode - 15; 75; 150; 300 V.For measuring the anode current and emission of diodes - 1.5; 3; 7.5; 15; thirty; 75; 150 mA;To measure the grid current 2 - 0.75; 1.5; 3; 7.5; 15 mA;To measure the reverse current of the grid 1 and the anode current at the beginning of the characteristic is 0.75; 3; 15; thirty; 150 μA;To measure the rectified current - 150; 300 mA;To measure the slope of the characteristic - 0.75; 1.5; 3; 7.5; 15; thirty; 75 mA / V.The following cathodic resistances are available for supplying automatic bias to the test lamps: 30, 50, 68, 75, 80, 100, 120, 150, 160, 200, 220, 400, 500, 2х600 ohms. The basic errors of measuring instruments in normal operating conditions do not exceed the following values: - the basic error of the voltmeters for measuring the heating voltage, anode, grid 1, grid 2 and milliammeters - anode current, grid 2, and rectified current of the tested kenotrons - ± 1.5% of the upper limit of measurement of each scale;- the basic error of the tube microammeter for measuring the reverse current of the grid 1 and the current at the beginning of the characteristic is ± 2.5% of the upper limit of the measurement of each of the scales;- the basic error of the tube voltmeter for measuring the slope of the characteristic is ± 2.5% of the upper limit of the measurement of each of the scales.Normal operating conditions of the device: - ambient air temperature +20 ± 5 ° С;- relative humidity 65 ± 15%;- Atmospheric pressure 750 ± 30 mm Hg. P.- supply voltage of the network 50 Hz 220 V ± 2%.Operating conditions of the device: - temperature range from -10 ° to +40 ° С;- relative humidity up to 80% at temperature +20 ° С;- frequency 50 Hz ± 1%; Voltage 220 V ± 10%;- frequency of 400 Hz + 7 / -3; Voltage 115 V ± 5%;The meter is designed for continuous 8-hour work, including self-heating time, when testing various types of lamps with anode current up to 100 mA. A 2-hour meter operation is possible with a continuous check of lamps of the same type with anode current from 100 to 150 mA. The self-heating time is 30 minutes. The device is powered by AC 50 Hz ± 1% with rated voltages of 127 and 220 V, as well as from a 400 Hz alternating current network with a nominal voltage of 115 V.The device works normally when the mains voltage is changed from 220 V, 127 V, 50 Hz to ± 10% and 115 V 400 Hz to ± 5% when the "Network" switch switches the red indicator dial to the red scale risk with the "Network" button pressed. The arrow of the device is set to red with an accuracy of ± 1 small division.The maximum power consumed by the meter at the rated supply voltage does not exceed 300 W when testing all types of lamps except for the 5C3S lamp, while checking the lamp 5C3S - 450W.Average time of trouble-free operation of the meter is not less than 1250 hours.The overall dimensions of the device are 515x320x230 mm.The weight of the device does not exceed 22 kg. Condition: Seller refurbished, Condition: From Stock. Regularly checked by Ministry of Metrology in Moscow., Brand: CCCP, Model: L3-3, MPN: L3-3, Country/Region of Manufacture: Russian Federation, Unit Type: kg, Unit Quantity: 1

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