Connecting a powerful ultraviolet lamp. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Connecting a powerful ultraviolet lamp. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Lighting

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Often, radio amateurs are looking for a passport and a wiring diagram for a powerful UV lamp to erase ROM or make boards using a photo method. I copied from the original all the materials on this type of lamp, i.e. for inclusion in the network ~ 220V and recommendations for its use.

Purpose of lamps

Mercury-quartz lamps are powerful sources ultraviolet radiation and are used in medicine (for the purposes of physiotherapy), biology and technology, photochemical processes, luminescent analysis, etc.

Connecting a powerful ultraviolet lamp. Lamp dimensions

Lamp specifications

Mercury-quartz lamps are designed for operation in AC networks with a voltage of 220V, a frequency of 50Hz, ballasts in accordance with GOST 16809-71.

Connecting a powerful ultraviolet lamp. Lamp dimensions

During the first 10-15 minutes. after turning on the lamp, its electrical parameters change (unsteady mode), and then remain constant (steady mode) at a constant mains voltage (see Table 1). The dimensions of the lamps are shown in Fig. 1 (DRT230), line 2 (DRT400) and line 3 (DRT1000).

Electrical parameters of lamps when operating in an alternating current network.

Table 1
Lamp type designation Cipher Mains voltage, V Lamp starting current, A** cont. tirelessly mode, min** steady state
Current strength, A** Stressed, on the lamp, V Power, W
DRT 230 (1,2,3) 220 60 15 3,80 70±8 230 + 11.5
DRT 400 (1,2,3) 220 60 15 3,25 135±15 400 + 20
DRT 1000 (1,2,3) 220 140 15 7,50 145±15 1000 + 50

Turning on lamps in an alternating current network

The luminous fluxes of lamps of the DRT type in the wavelength range of 240-320 NM are shown in Table 2.

Table 2
Lamp type Cipher Nominal values Limit values
Net flow, W Radiant flux, W
State sign. quality 1st category State sign. quality Category 1
DRT230- (1,2,3) 24 22 20 19
DRT 400 (1,2,3) 39 37 33,5 31,8
DRT 1000 (1,2, 3) 128 125 110 108,0

The upper value of the radiant flux is not limited.

Connecting a powerful ultraviolet lamp. Wiring diagram for a powerful UV lamp

L - DRT lamp
DB - choke
K - button
C1 -capacitor cap. 2-3 uF. for example. 300-600V
C2 - capacitor cap. 0,0003 -0,0005 uF.

Lamp Instructions

Before installing the lamp in the equipment, it is recommended to wipe it with cotton wool moistened with alcohol. When using lamps in closed apparatus, adequate ventilation must be provided.

It is possible to operate the lamps only with devices that provide the starting and steady state indicated in Table 3. The position of the lamp during operation is horizontal, with a deviation from the horizontal in both directions by an angle of not more than 10.

Lamp Handling Precautions

Protective goggles should be worn to protect the eyes from ultraviolet radiation. The use of lamps for physiotherapy purposes should be under the supervision of medical personnel. When using lamps for other purposes, precautions should be taken to avoid burns from the ultraviolet rays of the lamp.

Lamps that have failed or burnt out their service life should be broken in a closed volume, treated with a 1% solution of potassium permanganate, taken out of the settlement and buried in the ground to a depth of at least 0,3 m.

Electrical parameters of ballast chokes.

Table 3
Lamp Type Work mode Start mode
Voltage, V Current strength, A Voltage, V Current strength, A
DRT 230 - (1, 2, 3) 190 3,80 + 0,1 6,0
DRT 400 - (1, 2, 3) 144 3,25 + 0,1 220 6,0
DRT 1000 - (1, 2, 3) 139 7,5 + 0,1 14,0

Author: D. Marchenko, (RK3AOR), mdv@ecoprog.ru; Publication: cxem.net

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