Elbiru 250watts MH E-ballast

BarraCuda™ · 04-09-2005, 11:54 PM

This is the specs

BarraCuda™ · 04-09-2005, 11:55 PM

Top view of the ballast

Connection to the ballast is very straightforward. 3 wires input Live, Neutral, Earth and 2 wires output. There is no earth wire available on the output so you will have to tap the earth directly from the source.

BarraCuda™ · 05-09-2005, 12:27 AM

Ampere reading for 2 ballasts driving 2x250W BLV 10000K is 2.17A.

Calculation for powerfactor
2.17A x 240V = 520.8VA
500W / 520.8VA = 0.96

The powerfactor of 0.96 is fairly decent for a reasonably priced eballast like this. The powerfactor calculated at start is 0.98, somehow when the ballast warmed up, the powerfactor drops also.

This eballast is unlike the normal magnetic core ballast. The initial current(ampere) drawn is 0.83A and slowly increased as the bulb heats up and finally reached a stable 2.17A.

Magnetic core ballast will draw a current of 2 times or more during start up and slowly decrease. This is the primary cause of poor quality timers failing, this high surge in current may cause timer contacts to weld and overheat.

However, this eballast still runs fairly hot. Not as hot as magnetic ballast but you wont be able to hold it more than 20secs.

There is no visible change in brightness and color driven by this ballast compared to the magnetic ballast.

For the cost of only $120, this ballast would be a good buy for new MH sets. For existing users with magnetic ballast, there isnt much improvement to justify the additional costs.

08-09-2005, 12:56 AM

It a very good product , but how about an HQI 280W magnetic ballast?

BarraCuda™ · 08-09-2005, 01:27 PM

Quote:

Originally Posted by monsterz1975

It a very good product , but how about an HQI 280W magnetic ballast?

280watts ballast driving a 250watts bulb? overdriving bulbs are not really recommended

25-09-2005, 05:10 AM

Quote:

Originally Posted by BarraCuda™

280watts ballast driving a 250watts bulb? overdriving bulbs are not really recommended

Got it , Thanks . But there still plp using VHO to over drive their T5 54w tube to 80w.

25-09-2005, 12:32 PM

Quote:

Originally Posted by monsterz1975

Got it , Thanks . But there still plp using VHO to over drive their T5 54w tube to 80w.

Wow,
Like that the T5 life will be shorten in no time.
Have money to burn ok loh

Regards

25-09-2005, 01:15 PM

Quote:

Originally Posted by sherman

Wow,
Like that the T5 life will be shorten in no time.
Have money to burn ok loh

Regards

They claim the result is better.

25-09-2005, 05:12 PM

Quote:

Originally Posted by sherman

Wow,
Like that the T5 life will be shorten in no time.
Have money to burn ok loh

Regards

If using low cost HO T5 tubes okay but not those ATI, etc.

26-09-2005, 09:52 AM

By the way, seem to read one article regarding MH review. It claim that eballast offer lower PAR compare to magnetic ballast....
If that is true, why pay more for a eballast and get less PAR ?

04-09-2005, 11:54 PM	#1
BarraCuda™ SiaoGu Gives You Wings Join Date: Jul 2001 Posts: 4,169	Elbiru 250watts MH E-ballast This is the specs

04-09-2005, 11:55 PM	#2
BarraCuda™ SiaoGu Gives You Wings Join Date: Jul 2001 Posts: 4,169	Top view of the ballast Connection to the ballast is very straightforward. 3 wires input Live, Neutral, Earth and 2 wires output. There is no earth wire available on the output so you will have to tap the earth directly from the source.

05-09-2005, 12:27 AM	#3
BarraCuda™ SiaoGu Gives You Wings Join Date: Jul 2001 Posts: 4,169	Ampere reading for 2 ballasts driving 2x250W BLV 10000K is 2.17A. Calculation for powerfactor 2.17A x 240V = 520.8VA 500W / 520.8VA = 0.96 The powerfactor of 0.96 is fairly decent for a reasonably priced eballast like this. The powerfactor calculated at start is 0.98, somehow when the ballast warmed up, the powerfactor drops also. This eballast is unlike the normal magnetic core ballast. The initial current(ampere) drawn is 0.83A and slowly increased as the bulb heats up and finally reached a stable 2.17A. Magnetic core ballast will draw a current of 2 times or more during start up and slowly decrease. This is the primary cause of poor quality timers failing, this high surge in current may cause timer contacts to weld and overheat. However, this eballast still runs fairly hot. Not as hot as magnetic ballast but you wont be able to hold it more than 20secs. There is no visible change in brightness and color driven by this ballast compared to the magnetic ballast. For the cost of only $120, this ballast would be a good buy for new MH sets. For existing users with magnetic ballast, there isnt much improvement to justify the additional costs.

08-09-2005, 12:56 AM	#4
monsterz1975 Guest Posts: n/a	It a very good product , but how about an HQI 280W magnetic ballast?

26-09-2005, 09:52 AM	#10
cwloo Guest Posts: n/a	By the way, seem to read one article regarding MH review. It claim that eballast offer lower PAR compare to magnetic ballast.... If that is true, why pay more for a eballast and get less PAR ?

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