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410
Transformer input module (TRM)
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Current and voltage input transformers form an insulating barrier between the external
wiring and internal circuits of the terminal. They adapt the values of the measuring
quantities to the static circuitry and prevent the disturbances to enter the terminal. Max-
imum 10 analog input quantities can be connected to the transformer module (TRM). A
TRM with maximum number of transformers has:
•
Five voltage transformers. The rated voltage is selected at order.
•
Five current transformers. The rated currents are selected at order.
See figure 219.
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