Hi,
I want to measure the line-line voltage (415V) or Line-neutral voltage (240V) from a 3phase power supply. I am also measuring the current using a hall sensor. yes, I am after the power factor and power of this 3ph system when loaded.
I have a NI module which can measure up to 250V so I can measure line-neutral. But it got me wondering, is there a voltage probe that reduces the voltage by a factor of 10 (say) much like a probe for an oscilloscope. I measured the 10x reduction of an oscilloscope probe using a multi meter on a single phase source (240V) and found the voltage to have been reduced to 11V. which isnt a factor of 10 reduction and made me wary of using this to measure voltage on mu NI module (they are expensive).
The question: is there an of the shelf product that reduces voltage by a factor that is reliable to use by a standard multi meter and not a scope? I need to log the data for the system I am building (and yes I can do this via oscilloscope but would like a more integrated solution; keeping all data together).
regards
I want to measure the line-line voltage (415V) or Line-neutral voltage (240V) from a 3phase power supply. I am also measuring the current using a hall sensor. yes, I am after the power factor and power of this 3ph system when loaded.
I have a NI module which can measure up to 250V so I can measure line-neutral. But it got me wondering, is there a voltage probe that reduces the voltage by a factor of 10 (say) much like a probe for an oscilloscope. I measured the 10x reduction of an oscilloscope probe using a multi meter on a single phase source (240V) and found the voltage to have been reduced to 11V. which isnt a factor of 10 reduction and made me wary of using this to measure voltage on mu NI module (they are expensive).
The question: is there an of the shelf product that reduces voltage by a factor that is reliable to use by a standard multi meter and not a scope? I need to log the data for the system I am building (and yes I can do this via oscilloscope but would like a more integrated solution; keeping all data together).
regards