Summation current transformers (SUM series) combine multiple synchronous AC currents with similar phase positions but different load phase shifts or nominal voltages. They are not suitable for tariff measurements due to voltage differences.
SUM125 can be mounted horizontally using four M6 screws or on a 35 mm DIN rail; SUM155 requires four M6 screws.
Introduce
Summation current transformer are suitable for the summation of several synchronous alternating currents with similar phase position.but with different loaded phase shifts. lt is also possible to have the summation of currents with varied nominal voltages of similar phase positions These measurements are not suitable for tariff applications, since the existing voltage differences are recorded as errors.
Applications
Sdandard
The application of SUM125 Summation Current Transformer in the power system must meet the following standard requirements:
Technical Parameter
Dimensions
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