Author Topic: Can you put two 150V eLoads in series to handle 300V?  (Read 547 times)

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Offline FaringdonTopic starter

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Can you put two 150V eLoads in series to handle 300V?
« on: April 05, 2023, 12:37:44 pm »
Hi,
Can you put two 150V eLoads in series to handle 300Vdc?

SDL1020X eLoad:
https://siglent.co.uk/product/siglent-sdl1020x-e-programmable-dc-electronic-load/
« Last Edit: April 05, 2023, 12:39:19 pm by Faringdon »
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Online coppercone2

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Re: Can you put two 150V eLoads in series to handle 300V?
« Reply #1 on: April 05, 2023, 12:38:18 pm »
maybe
 
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Offline Pfriemler

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Re: Can you put two 150V eLoads in series to handle 300V?
« Reply #2 on: April 05, 2023, 01:01:46 pm »
I never would do that. Maybe in CV or CR mode, but never in CC - you put two current sources in series and get what?
This can only work if the two loads are perfectly balanced, otherwise one device soon will see (much) more than 150V and get damaged.
jm2c
once you do it right, it works :-)
 
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Offline nctnico

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Re: Can you put two 150V eLoads in series to handle 300V?
« Reply #3 on: April 05, 2023, 01:02:36 pm »
If you like the magic smoke escaping from test equipment, then the answer is yes.
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 
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Offline alm

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Re: Can you put two 150V eLoads in series to handle 300V?
« Reply #4 on: April 05, 2023, 01:17:11 pm »
If you like the magic smoke escaping from test equipment, then the answer is yes.
I agree. For a more spectacular effect, add some disco lights that if you're lucky will suddenly turn off as a circuit breaker gets tripped by the shorted loads shorting the 300 Vdc source.
 
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Offline Pfriemler

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Re: Can you put two 150V eLoads in series to handle 300V?
« Reply #5 on: April 05, 2023, 01:42:21 pm »
OMG. I did not think about what can happen if a load is blown, but an internal meltdown leading to a 300VDC short cut is the most likely version. And if the first is gone, the other will follow immediatley.
But I think that a suitable circuit breaker (even a well dimensioned short copper line will do) should always be a part of the setup...?
btw: If two EL are to put in series or parallel (to balance the load) is a question of the used mode, isn't it?
once you do it right, it works :-)
 
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