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Products => Test Equipment => Topic started by: MudMan on October 04, 2015, 07:23:42 pm

Title: Array 3720A load failure?
Post by: MudMan on October 04, 2015, 07:23:42 pm
I have a problem with my Array 3720A electronic load. When I measure, without anything connected to the inputs of the load, between the mains ground (i.e. shield of Trigger Input BNC-Connector) and minus input of the load, I measure a voltage of 8.9 volts AC with an offset of 10.2 volts DC. If I connect a power supply with a grounded minus, or only a wire between mains ground and minus input, a huge current (> 8 Amps) will flow and the mains fuse of the load will blow!
I this a bug or an "normal" behavior of this load. The load will work normally if the inputs are not grounded.
Title: Re: Array 3720A load failure?
Post by: PedroDaGr8 on October 04, 2015, 11:23:07 pm
Have you tried contacting their customer service? I have had great results with Array customer service.

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Title: Re: Array 3720A load failure?
Post by: MudMan on October 05, 2015, 02:58:41 pm
Quote from: PedroDaGr8 on October 04, 2015, 11:23:07 pm
Have you tried contacting their customer service? I have had great results with Array customer service....
Did you mean scott@array.sh?
Title: Re: Array 3720A load failure?
Post by: PedroDaGr8 on October 05, 2015, 11:41:42 pm
Quote from: MudMan on October 05, 2015, 02:58:41 pm
Quote from: PedroDaGr8 on October 04, 2015, 11:23:07 pm
Have you tried contacting their customer service? I have had great results with Array customer service....
Did you mean scott@array.sh?

I don't remember the exact email address but it was Scott Zhang who helped me out. He sent me some parts to repair my array PSU free-of-charge. Mind you, these were from abuse by a previous person, not the fault of Array. Someone had broken off the banana plugs and he sent some replacements to me.