S13(11)-M.RL type delta three-dimensional rolled iron core fully sealed power transformer

This product has the excellent performance of low no-load loss, low no-load excitation current, low noise and obvious power saving effect. It improves the voltage quality and reliability of power supply, and is a green energy-saving equipment conducive to environmental protection, and is the latest product popularized for use in the technical renovation project of urban and rural power grids. The company produces S13 (11)-M.L series of fully sealed three-dimensional triangular rolled iron core transformer is different from the traditional plane stacked piece of core transformer whose core is composed of a single piece of frame three-dimensional triangular arrangement of three-phase column yoke. Each column body by high-quality cold rolled silicon steel strip continuous coiling, bandwidth by CNC cutting machine for straight line or curve shear. Strip in the core winding machine winding composed of round or folded edge arc frame piece after the vacuum nitrogen annealing treatment to eliminate processing stress, character reorientation, increase permeability, improve electromagnetic properties: high and low voltage coils using a special winding machine, directly in the core column paper tube winding, the overall structure of a solid and compact, the body of the upper and lower iron-yoke insulation and lamination of wood, around the pulling screw pulling the coil tightly, so that it is stable and reliable, can withstand the impact of a sudden short circuit. S13-M.RL is a product of National Torch Plan in 2006, which has passed the form test of National Transformer Quality Inspection Center, and passed the appraisal of provincial and ministerial experts in 2006, and won the Third Prize of Science and Technology Progress of Zibo City, meanwhile, due to its small volume and light weight, it is especially suitable for the densely populated places such as commercial centers, residential districts, industrial parks, etc., and other places where electricity is used. place.

Model Meaning

Product Characteristics

Low loss according to the current national GB/T6451-1999 “three-phase oil-immersed power transformer technical parameters and requirements” capacity 30-2000kVA, S13-M.RL series of no-load loss of an average of 50%, load loss of an average of 30%: S11-M.L series of no-load loss of an average of 30%, load loss of an average of 25%.

Low no-load current

Due to the excellent material of rolled iron core and the characteristics of winding processing, the no-load current is significantly reduced. According to the current national standard GB/T6451-1999 “three-phase oil-immersed power transformer technical parameters and requirements”, S13(11)-M.RL series transformer no-load current decreased by 75% on average.

Low running noise

According to JB/T10088-1999 noise standard, S13-M.RL and S11-M.RL series noise are reduced by 7-9dB.

Strong short-circuit resistance

Transformer body as a whole set up body three-pronged column shape, around and in the center are set up to pull the screw, and the upper and lower iron yoke insulation and laminated wood constitutes an integral whole, can effectively resist the sudden short-circuit axial, amplitude of the mechanical stress.

Structural features

Iron core 

iron core material not less than 30ZH110 cold rolled silicon steel sheet; three-phase three-pillar three-dimensional symmetrical structure has the most balanced three-phase magnetic circuit: each group of heart piece by a thin steel strip in the special core winding machine wound from the pressure uniformity and tightness: core frame piece by vacuum annealing treatment, to eliminate the internal stresses, to improve the electromagnetic properties; core surface coated with epoxy resin paint, moisture-proof, curing.

Winding
The winding is made of paper-coated flat copper wire or Q0-2 acetal enameled wire made of low-oxygen copper; the low-voltage coil is double-layer or four-layer cylindrical or new spiral or foil type. High-voltage coil is multi-layer cylindrical; coil oil channel is corrugated structure, the insulation between layers is double-sided adhesive paper; low-voltage and high-voltage surfaces are wrapped with epoxy semi-adhesive fiberglass tape to increase mechanical strength.
Body and lead wires
The insulating cardboard is used to insulate the upper and lower yokes; laminated wood is used to insulate the balance pads; laminated wood cardboard is used as the lead bracket; all the fasteners are effective locking anti-loosening nuts.
Fuel tank
The use of triangular structure of the fully sealed corrugated oil tank, three-phase are set up to ensure that the corrugated sheet to ensure heat dissipation and compensate for changes in oil temperature caused by changes in the volume of oil expansion volume; box cover is equipped with a pressure relief valve of the oil level meter to facilitate refueling and observation of the oil level height, and the transformer inside the sudden break fault over-voltage pressure release, safety protection.

Main parameters and installation dimensions