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Old 28th March 2013, 03:41 PM   #1
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Default Analog Metric Softstart Board

Hi all -

First post here. Just purchased the goodies to build up a pair of UcD400HG+HxR's and am trying to get a little clarification on a few things. The softstart boards that came with it are not the hypex boards, rather a pair of Analog Metric SOST softstarts Soft Start Board. My question is this - the seller on here suggested I may be able to run this with 115v instead of 220 but I'm not sure how I would go about doing that. Any suggestions would be greatly appreciated as I'm basically trying to figure out if it would just be easier to buy a hypex softstart and put all of this in a single case as a dual mono setup (2 toroids / 2 HG power supply boards / 2 UcD's and a single softstart from mains). Many thanks and looking forward to learning!

Best,
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Old 28th March 2013, 04:29 PM   #2
Bill_P is offline Bill_P  United States
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What are the markings on the black capacitor? If it is not class X2 the board is not safe to use in any event. At 115V the capacitance value may need to be doubled to provide enough current to run the relay.
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Old 28th March 2013, 05:39 PM   #3
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I don't have the board in front of me so I'll have to check tonight. Basically I'm just trying to figure out if it makes more sense (safety and financially - in that order) to just order the hypex board instead of hacking this one to try and make it work.
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Old 29th March 2013, 01:31 AM   #4
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Here is a picture of the cap - Click the image to open in full size.
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Old 29th March 2013, 12:19 PM   #5
AndrewT is online now AndrewT  Scotland
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Quote:
Originally Posted by Nirvana5253 View Post
Here is a picture of the cap - Click the image to open in full size.
That is not approved for connection to a mains supply.
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regards Andrew T.
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Old 29th March 2013, 02:00 PM   #6
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Quote:
Originally Posted by AndrewT View Post
That is not approved for connection to a mains supply.
In which jursisdiction? I was questioning the blanket statement.
It may be approved for mains connection in mainland China. It looks like a Chinese version of a Japanese metalised polyester motor run capacitor.

It has no US standard markings.
X2 applies to particular types of capacitor.
I have many mains rated capacitors which are not marked X2. Over here we get all sorts of mains capacitors, BS, IEC UL and Japanese approvals.
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Old 29th March 2013, 04:24 PM   #7
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So it sounds like this isn't ok to use. I think I'll just go ahead and order the hypex softstart even though its not required, better safe than sorry (will be running 2 TR400's / 2 UcD400HG+HxRs in a single case). Thanks!
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Old 29th March 2013, 08:38 PM   #8
Bill_P is offline Bill_P  United States
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The capacitor carries only a China Quality Certification mark (CQC) but it is rated for 400 volts AC. If you have confidence in the China certification the part is probably safe to use. Still the capacitance is too low for 115 VAC use. A capacitor rated at 3uF 250 VAC would be a suitable substitute, hopefully with UL, CSA, VDE, TUV etc markings.

The CBB61 marking indicates the capacitor is intended as a motor run capacitor. It seems these parts are often used in fans.

I am not familiar with the hypex soft start you referenced.
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