Author Topic: High Voltage input ac breakers  (Read 625 times)

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Offline Vindhyachal.takniki

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High Voltage input ac breakers
« on: July 03, 2017, 06:30:46 am »
1. I am using a lithium ion battery charger.

2. Its bit expensive, & in field one of it got failed. I checked its input ac side board gets burned out due to over voltage ac input

3. Charger is rated at:
i) Input:
a) Voltage Range: 90~264Vac
b) Frequency Range: 47Hz--63Hz
c) Power Factor(Typical):  PF?0.95/230VAC Full Load
d) Efficiency ( Typical): ?91%(220vac/Rated Load)
e) AC Current (max.): ?20A
f) Inrush Current (Typical): ?30A @220Vac Cold start
g) Leakage Current: Input—output: ?0.25mA Input—PG: ?3.5mA

ii) output:
a) DC Output: 48V
b) Rated Current: 21A?90-174Vac??42A?175-264Vac?



4. Need a ac input overvoltage tripper for that:
a) If AC line voltage ever increases to 264Vac max system should trip.
b) Sometimes in field, one line falls over another line due to some breakage, this almost doubles the voltage of the line, system should trip.
c) Also protection in case of lightning.


5. Is there any ready made good quality device for this?
 

Offline fourtytwo42

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Re: High Voltage input ac breakers
« Reply #1 on: July 03, 2017, 08:54:42 am »
Several pictures would help as would the make and model :)
 

Offline testian

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Re: High Voltage input ac breakers
« Reply #2 on: July 03, 2017, 09:36:54 am »
Maybe something like: http://uk.rs-online.com/web/p/surge-suppressor-units/3115830/ (Over Voltage Protector)
 

Offline MosherIV

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Re: High Voltage input ac breakers
« Reply #3 on: July 03, 2017, 10:31:43 am »
Yes, I was thinking what he was describing was a surge suppressor.

Bear in mind that each surge takes life out of the MOV.
Good ones have a separate neon to indicate if the surge supressor is working or not and the light goes out when it is not
 


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