Nameplate Rating
Manufacturer's certified specifications on the transformer nameplate defining all critical parameters.
The nameplate contains manufacturer-certified specifications per IEC 60076-1 or IEEE C57.12.00.
Key data: manufacturer, serial number, kVA/MVA, voltages (with tap ranges), currents, frequency, impedance, vector group, cooling, temperature rise, BIL, weights, standards.
Specifies tap positions with voltages and ratios for regulation and parallel operation.
QDTB provides comprehensive nameplates with corrosion-resistant plates permanently affixed to the tank.
Related Products
Related Terms
kVA Rating
The apparent power rating of a transformer in kilovolt-amperes, determining load-carrying capacity.
Rated Capacity
The maximum continuous power output a transformer can deliver at specified conditions without exceeding temperature limits.
Impedance (%Z)
Total opposition to current flow in a transformer as a percentage, determining fault current and voltage regulation.
Vector Group
Standardized designation of transformer winding connections and phase displacement between HV and LV.
More Terms Starting with “N”
No-Load Loss
Power consumed when energized but not supplying load, consisting of core losses (hysteresis + eddy currents).
Neutral Point
The common connection point of a star (wye) winding where the three-phase voltage vector sum equals zero.
NEMA Rating
Enclosure protection ratings for electrical equipment specifying protection against environmental hazards.
Network Protector
An automatic switching device on secondary network systems preventing reverse power flow from distributed generation sources.
More in “Performance Parameters”
Core Loss
Power dissipated in the transformer magnetic core due to hysteresis and eddy currents, also called iron loss or no-load loss.
Copper Loss
Power lost as heat in transformer windings due to electrical resistance, proportional to the square of load current.
Efficiency Class (IE1-IE4)
International classification for transformer energy efficiency, IE1 (standard) to IE4 (premium) with progressively lower losses.
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