The 5 amp current-to-current:
The 0.333 Voltage output SCT and UCT:
At this time Open Source Meter Inc does not have distributors outside of the United States.
Magnelab SCT-0750 Current Transformers can function safely from zero to 200 Amps. A 5 Amp unit will have an output of 0.333 Volt at 5 Amps and the same unit used at 200 Amps will have an ideal output of 13.33 Volts. The temperature rise at 200 Amps will be only a few degrees due to low current in the secondary winding. Therefore, an SCT-0750-005 (5 Amp unit) could be used at 200 Amps since the core does not saturate and the temperature increase is minimal.
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The SCT and UCT series are not designed for outdoor use.
The current passing through the standard lead wires of our current sensors is very low, therefore, there is insignificant voltage drop due to the length of lead wires. In practice, the units have been tested up to 7,500 feet and the output voltage and phase angle shift were within the listed specifications.
Our current sensors provide an output voltage proportional to the current input. For example, the SCT-1250-600 will have an output of 0.111 Volt at 200 Amps, and 0.333 Volt at 600 Amps, and output of 0.444 Volt at 800 Amps. We guaranty that the actual (measured) output voltage will be within one percent of calculated output voltage from 10% to 130% of rated current (from 60 Amps to 780 Amps).
All transformers in the SCT and UCT series are UL recognized and rated for an accuracy of Â± 1% when used between 10% and 130% of the rated current.