Why Do Switchgear Cabinets Need Metering Transformers?
Why Do Switchgear CabinetsNeed Metering current Transformer?
Metering transformers (CTs and VTs) are essential in Switchgear for three key reasons:
Accurate Billing – They step down high voltage and large current to standardized low values (e.g., 100V, 5A or 1A) that meters can directly measure. With precision grades like 0.2S, they ensure fair and legally compliant trade settlement.
Safety Isolation – They provide physical galvanic isolation between primary high-voltage circuits and secondary measuring devices, protecting personnel and equipment from dangerous electrical hazards.
Anti-Tampering Design – Dedicated metering windings with sealable terminal covers prevent unauthorized wiring modifications, deterring electricity theft.
Without them, direct measurement would be impossible, unsafe, and unreliable for commercial applications.
