بالاست الکترونیکی ضد انفجار

بالاست های الکترونیکی از جمله تجهیزات روشنایی به حساب می آیند که در صنایع نفت و گاز و پتروشیمی کاربرد فراوانی دارند. به دلیل حساس بودن شرایط محیطی در این صنعت ها و وجود گازهای قابل اشتعال و انفجار، بایستی از بالاست هایی استفاده شود که دارای استانداردهای خاصی از جمله استاندارد بین المللی ضدانفجار (یا اصطلاحاًً Ex) باشند. با توجه به موجود نبودن این نوع بالاست و نداشتن استاندارد مورد نیاز در داخل کشور, این شرکت اقدام به تولید بالاست های الکترونیکی مطابق با استانداردهای روز دنیا کرده و موفق به دریافت گواهینامه استاندارد ضدانفجار از موسسه ECM ایتالیا شده است و هم اکنون در صنایع مختلف مورد استفاده قرار می گیرد.

Explosion protected electronic ballast
Application
This product is electronic ballast for start and operation of fluorescent lamps. it has
been designed for explosion proof application and used in hazardous area due to
presence of flammable and explosive gases and vapors in Zone 1 and 2 in
accordance with ATEX EN 60079-0 EN 60079-1 EN 60079-7 & EN 60529.
Feature
 A newly developed generation of electronic ballast with two "End of Life"
(EoL) protection circuits according to IEC 60079-7
EoL test 1: Asymmetric pulse test
EoL test 2: Asymmetric power test
 Enhanced plant safety due to 2-channel electronic ballast, only the defective
lamp is switched off
 An integrated DC switching relay makes it easy to incorporate in the
emergency lighting system
(automatic switch over to DC power)
 Increased life time
 Simple and versatile installation
 Significant savings are achieved through the usage of ballasts with energy
classification EEI=A2
3 Amvaje Abi company Amvaje-Abi.com
Explosion protected electronic ballast
End of Life
During the operation of fluorescent light fixtures, the electron-emitting material on the
electrodes is consumed. This has the consequence that the energy to release the
electrons is increased, and this, in turn, can lead to a higher voltage drop at the
electrodes of the fluorescent lamps.
Since the electronic ballast functions as a constant current source, a higher voltage
drop results in a power consumption increase. This produces a rise in the surface
temperature at the lamp tube ends. The temperatures may exceed the limit values
specified for explosion proof apparatus and thereby effect the overall explosion
protection.
EoL switch-off test
 EoL – Asymmetric pulse test
If an increased voltage drop is detected (as in the case of an old fluorescent
lamp), the effected lamp power circuit is switched off
.
 EoL – Asymmetric power test
In this testing circuit, the increased power consumption loss of the used
fluorescent lighting element is measured. The lamp power circuit is switched
off before the limit value for power loss (< 10 W) is reached.
The following applies to both of the test methods:
If the old lamp is replaced with a new one after electronic ballast switch-off,
then the ballast functions properly once again.
4 Amvaje Abi company Amvaje-Abi.com
Explosion protected electronic ballast
Technical data
Electronic ballast Model AB72/1-ED
Electronic ballast Type 2 x 36/40 W
used for single-lamp or two-lamp applications
Explosion protection II 2 G EX db eb IIC Gb
Certificates IMQ 18 ATEX 009 U
Lamp start-up Cold start within 300ms
Mains voltage AC: 198 V … 264 V 50/60 Hz
DC: 176 V … 254 V
Temperature range -20°C … +60°C
Energy classification EEI = A2
Lamp wattage 2 x 36/40 W
Rated current at 220 V/240 V 0.32 A/0,30 A
Lamp power consumption 64 W
System power rating 69 W
Power factor cos ϕ 0,97
Protection rating
Housing ≥ IP54
Terminal IP20
Terminal max 2 x 2.5