Home > Products > Power transformers, oil-immersed, voltage class 35 kV > Energy-efficient two-winding power transformers with split НН windings and on-load tap-changer (RПН), type ТРДНС-25000/35-У1(УХЛ1), featuring reduced losses

Energy-efficient two-winding power transformers with split НН windings and on-load tap-changer (RПН), type ТРДНС-25000/35-У1(УХЛ1), featuring reduced losses

The power transformer is a three-phase, double-winding, oil-filled type with natural oil circulation and forced air circulation, equipped with an on-load tap changer (РПН). Automatic control is carried out by an automatic controller supplied together with the transformer. It is intended for use in the auxiliary power systems of power plants. The use of a ТРДНС-type transformer ensures reliable power supply to the consumer throughout the entire service life.

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Description

Power range

Power rating: 25000 kVA.
Primary winding voltage HV: 36.75 kV.
Climatic design: У1 or УХЛ1.

Transformer symbols

Т – Three-phase transformer.
Р – Equipped with split LV winding.
Д – Natural oil circulation with forced air circulation.
Н – On-load voltage regulation (RПН).
С – Designed for auxiliary power systems of power plants.
Х – Rated power, kVA.
35 – Voltage class, kV.
У1 or УХЛ1 – Climatic version and installation category according to ГОСТ 15150.

Characteristic

Technical Specifications of Energy-Efficient, Low-Loss ТРДНС-25000/35-У1(УХЛ1) Transformers
Transformer type	Rated power, kVA	Rated voltage, kV		Winding connection scheme and vector group	Losses, kW
		HV	LV		No-load	Short-circuit
ТРДНС-25000/35	25000	36,75 35	6,3-6,3 6,3-10,5; 10,5-10,5	Ун/Д-11-11	16	105

Overall and Mounting Dimensions

Overall Dimensions of ТРДНС-25000/35-У1 (УХЛ1) Transformers
Transformer type	Short-circuit voltage, %			No-load current, %	Weight, kg
Transformer type	ВН-НН1+НН2	ВН-НН1 или ВН-НН2	НН1-НН2	No-load current, %	Total weight	Transport weight	Oil weight
ТРДНС-25000/35	10,5	23	не менее 40	0,3	42795	37650	9660