山东晨宇电气股份有限公司

>Hainuo brand grade power transformer
>The power transformer produced by Shandong Chenyu Electric Co., Ltd.
has low loss, low noise, low partial discharge, strong short circuit resistance, strong overload capability, and no Features such as leakage, on-site hanging cover-free, and maintenance-free
are detailed as follows
>1. Low loss
>The design uses Japanese high-quality cold-rolled oriented high-magnetic silicon steel sheets, and uses strips The dehairing device is cut by a fully automatic iron core shearing line imported from Germany to ensure that the burrs are smaller than
>The core design adopts a special step-by-step process to make the direction of the magnetic potential at the joints more reasonable and very effective. Improved its magnetic flux performance.
>The chip adopts fully diagonal joints, continuous yoke, no holes and no binding (it uses support rods and support plates to hold it tightly and firmly adopts the process of not stacking iron yokes, which reduces the number of transportation of silicon steel sheets and effectively controls the stacking. The precision and joints of the sheets allow the high-quality performance of the silicon steel sheets to be fully exerted, thereby greatly reducing the process loss coefficient of the core.
>The wire is made of paper-covered wire made of high-quality oxygen-free copper rods. New composite wires, transposed wires, semi-rigid and self-adhesive wires first reduce resistance losses in terms of materials.
>The design uses lower current density, reasonable wire specifications and coil types, and perfect replacement These measures effectively reduce the resistance loss and eddy current loss of the coil.
>Increase the product structure, rationally arrange the gaps between the steel structure and the steel structure, and scientifically arrange the leads and connections, effectively reducing stray losses and lead losses.
>Due to the above measures, the loss of our company's transformers has been significantly reduced, and the energy saving has been very significant. Compared with the national standard, the no-load loss has been reduced on average
and the load loss has been reduced by about 10%. .
>2. Low noise
>Continuously optimize the electromagnetic design, select high-quality cold-rolled high-magnetic conductive silicon steel sheets, and select a reasonable magnetic flux density to ensure a certain margin under normal operating voltage, both Even when the system voltage is high, magnetic saturation will not occur and hysteresis vibration will be small.
>The chip adopts fully oblique joints to continuously yoke, without stacking iron yoke technology, and strictly controls the accuracy of lamination. The joints are controlled to the best position, so that the core magnetic resistance is small and the magnetic leakage is small.
>Core fastening adopts special process measures, using specially formulated multi-component curing glue to brush the end face of the core to make the core column Form a whole, and at the same time, reasonably control the clamping force of the iron core. It should not be too tight or loose, and the force should be uniform, so that the iron core becomes a whole and ensures that the iron core has good verticality and flatness.
>The corrugated surface of the plate-type oil tank can cause the transformer's sound source to form irregular reflections, avoid resonance, and also play a certain role in absorbing the sound source.
>For air-cooled transformers, our company has always chosen high-power and low-power transformers. Noisy fans have only the lowest noise. In recent years, the products produced by our company have made great breakthroughs in reducing noise, and are highly favored by users.
>3. Low partial discharge
>First check each unit The distribution of the electric field strength of the product is accurately calculated and carefully adjusted to make it uniformly distributed, reduce the distortion of the electric field, and ensure that the field strength of the component with the most concentrated electric field is always lower than the starting field strength of the discharge.
> Field Angular rings are added to areas where strong concentrations are concentrated to improve the electric field distribution, make the field intensity distribution more uniform, and effectively avoid electric field concentration.
>Wire welding shall all use cold crimping technology, and low-voltage leads shall use carbon precision welding, joints and welding Special measures are taken to smooth and shield the points.
>Some insulating parts and metal structural parts require chamfering, deburring and smoothing to make the electric field distribution more uniform.
>Kerosene is used for body drying The vapor phase drying process uses the principle of kerosene vapor condensation to fully flush the transformer body. Before leaving the factory, the products are hung twice and replaced with new oil to ensure a cleaner interior of the transformer.
>All transformers use semi-vacuum oil filling to effectively impregnate the insulating parts and avoid partial discharge caused by incomplete degassing.
>High level of on-site management, implementing fully enclosed and dust-free management of the workshop to effectively reduce the amount of dust.
>Strictly control and grasp the quality of purchased materials at the source to avoid partial discharges caused by raw materials.
>Due to the strong guarantee of the above measures, the partial discharge of our company's products is lower than 10%.
> 4. Strong short-circuit resistance
> In the design, we first consider the dynamic and thermal stability of the product, set up a separate voltage regulating winding, strictly control the ampere-turn balance of the high and low voltage windings, and ensure the high and low voltage windings at the same time. The magnetic centers are consistent, minimizing electrodynamic forces.