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Recent content by recalli349
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Relay Specifications
Hello everyone, I am in need of some help with regards to a relay. In the attached drawing, I am not sure of all the requirements of the the two relays between the power supply and the transformer. Must these two specific relays have a dielectric strength of 4800VAC? The power source is not in...- recalli349
- Thread
- Replies: 3
- Forum: Circuit design
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High Voltage Relays
Thank you for the responses everyone. The relays would only close once the hi-pot has been turned off. The relays will never pass 4800VAC. I am just wondering if 4800VAC is applied to those two relays (when open), what would the requirements of the relays have to be to ensure that breakdown does...- recalli349
- Post #10
- Forum: Circuit design
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High Voltage Relays
Haha, definitely not kidding. What exactly do you mean by too much? I wanted to be as specific as possible.- recalli349
- Post #3
- Forum: Circuit design
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High Voltage Relays
I have attached a picture of a circuit where a hi-pot is applying 4800VAC to a transformer. Also in parallel with that 4800VAC rms are two wires heading into a 600VAC rms multiplexer. I have one relay on each line. The 4800VAC is only applied when the relays are both open. I am not sure of the...- recalli349
- Thread
- Replies: 9
- Forum: Circuit design
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Measuring Voltage
Hey everyone. Thank you for the replies. I was advised to use a 300V DMM and a 300V multiplexer and to build a circuit between the device under test (which can have measurements up to 600V) and the multiplexer. This option was presented as the cheaper option. There is a 600V DMM available but I...- recalli349
- Post #8
- Forum: Circuit design
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Measuring Voltage
Thank you Skogsgurra for the reply. Right now I am thinking of inserting a low voltage potential transformer between the device under test and the voltmeter (which in this case is a Digital Multimeter). The transformers I would be testing range between 25VA and 7.5KVA. I would like to have it...- recalli349
- Post #3
- Forum: Circuit design
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Measuring Voltage
If I have a voltmeter that measures voltages up to 300 Volts, how can I use that same voltmeter to measure a signal between 300 volts and 600 volts? Specifically, this is for measuring the no load secondary voltage of a transformer. Thanks- recalli349
- Thread
- Replies: 11
- Forum: Circuit design
