Electronic ballast

Just as long as you are aware of the problem with third & fifth harmonics

which can cause heating of the neutral conductors.

this will say an 40wat tube take additional 50 w =90w

and give ligth like an 60 watt filament lamp?

Is this mit compensating Condensor or without them ?

I look to understand if an 40 watts fl-lamp will be connected

on 115volt line

and 230 volt line.

that make different power consumption (because voltage lossen in ballast!) ?

and also different if compensating is used or not ! (?)

and with electronic ballast is this possible way other values.

Why would a manufacturer of motion detector switchs say not to use fl-lights with electronic ballasts but is ok with magnetic ones????

what about harmonic distortion ?

You have to use a pattented ckt to reduce the harmonice content, only pays off in large power supplies. CE has never been able to enforce the ruling >^_^<

In what manner conventional ballast ?& Electronic ballast differs if Harmonics distortion is considered. Which one is good & why?

Electronic ballasts are based on high frequency switching and have two major advantages:

1. High efficiency

2. Low transport cost (they don't even compare in sizea and weight to the clasicalstarter/ballast system.

Disdvantages: 3rd and 5th harmonics can be pretty bad if not corrected with an active power factor corector. If pf near unity, 3rd, 5ht, 7th...11th harmonics are goiong to be very small in amplitude => insignificant.

During replacement of choke in the existing Tubelight we are replacing with Electronic choke at about 10000 light. The performance is good in my experiance.The efficiancy will be improved further if we provide T5 Lamp.Hence need not be worried about harmonic for lighting circuit alone.

Dear Sir,

In reply to your article on electronic ballast, I find that the major problem associated with electronic ballast is that they don't last long as compared to conventional ballast. My previous past experiences with electronic ballast is that these electronic devices are prone to internal control transformers burning up and electronic components failure. I ended up with extra downtime hours and incurring extra manpower hours to change these failures. Imagine a car parking floor of a huge shopping complex with a of minimum of 120 florescent tube fixtures and multiply that with 10 levels of car park, you can imagine the number of florescent light fixtures that employs electronic starter fixtures. If a failure rate of 10% expected, that would means about 120 electronic starters needed attention. Perhaps then I would rather stick on to conventional electrical ballast that last longer. Regards,

David TW Liew

davidtw.liew@gmail.com

I face the same problem of the short lifespan of the electronic ballast. It might be due to the ambient temperature I face in the tropical climate. Yes, the tubes last very long with good light output but the e-ballasts only last me about 2 years whether I use good ones or the cheaper ones. I have all switched to the cheaper ones. I am now exploring reverting back to the coils and use electronic starters because replacing the electronic ballasts is a hassle.

Can I use a motion sensor that is not for electronic ballast on an electronic ballast light loop?

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