# Linear electric arc evaporator LEDI-570D and linear arc evaporator power supply BP-357

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> Manufacturer: LLC "Laboratory of Vacuum Technologies Plus" (LVT), vaclab.ru

[Linear electric arc evaporator](https://vaclab.ru/devices/arc_evaporators/ledi_570) LEDI-570D and [power supply unit](https://vaclab.ru/power_sources/arc_evaporators_power_supplies/ps-357l) for linear arc evaporator BP-357L are designed for coating by vacuum-plasma spraying.

The principle of operation of the device consists in the evaporation of metal in an arc plasma discharge, and the subsequent deposition of the metal (or its compounds) on the substrate.

The unit is designed for power supply of a linear arc evaporator with a controlled constant current with control of the position of the arc spot. The block includes a control system that provides control of two current channels, automatic ignition of the arc. The position of the cathode spot of the arc is controlled by signals from two sensors located at the ends of the evaporator target.

Control is carried out via the RS485 interface (ModBus RTU protocol).

## Technical specifications

- Coolant: distilled water, 20% ethyl alcohol solution in distilled water
- Open circuit voltage of the cathode: 60-70 V
- Arc cathode voltage: 25-35 V
- Ignition voltage: 440-560 V
- Chamber working pressure range: 0,001-1,3 Pa
- Linear cathode length: 570 mm
- Maximum working pressure in the chamber: 10 Pa
- Minimum coolant consumption, l/min: Not less than 5 l / min