on-Load Tap Changer for Transformer Load Break Switch Tap Changer

The structure of SV on-load tap-changer

Compared with other products, we made some improvements as follows:

1. Change the selector

At present, the domestic products still use the old foreign structure, i. E., the movable contact makes connection

with the fixed contact. This structure has a large torque. Our company switched over to the traditional docking

structure with good contacts and small torque. The insulation bracket is made from three isolated wall with a

high-to-ground withstand voltage.

2. Under flange improvement

The under-flange s made of engineering plastics and lifted by four screws. While in the accidents, the increased

pressure often damage the under-flange (it occurs at home and abroad ). Therefore, our company strengthens

the prone-to-crack place to ensue good strength.

3. Correct arc principle

Some domestic manufacturers apply with slide between are contact and rotating pole. When the arc contact

leaves from the fixed contact, the current will breaks, and the current passes through arc contact to the rotating

rod. As the gap between the two can only connect by the arc, the rotating rod will burn off and the gap will get

larger, resulting in the broken of the rotating poles, thus accidents arise. We considered of this and take

appropriate measures

4. Correct resistance installation

Products of the same kind at home and abroad have no outer resistance baffle. Resistance will be scattered in

accidents. Under the effect f elasticity, it collapses which cause the tapping short circuit and threaten the safety

of the transformer. We add one baffle at the outer layer of resistances as a preventive measure, enhancing the

reliability.

Type designation

Voltage-regulating method: W- Positive- Negative voltage- Regulating G- – Thickness regulating

No. Of the middle position: In the middle part there are 0, 1 and 3.

No. Of working position: It could reach 19 or 27 positions.

No. Of contact: The thin contacts are 10 or 14.

Voltage grade (kV): Rated insulation level: 35 kV or 66 kV.

Connection method: Y- Neutral connection, D- Other connection

Technical parameters:

Max. Rated current (A): 200A, 350A

No. Of phase: III – Three-phase I- Single-phase

E. G. SV III 350 Y – 66 – 10 193 W

SV series switch, three-phase, maximum rated current 350 A, neutral connect, voltage at 66 kV, 10 contacts for

thin-regulating, 19 working positions, 3 middle-position, which conversion selector, positive-negative regulating.

REFERENCE TRANSFORMER:

Company Profile:

Our Best Service For You

FAQ For You

Our advantages:

Quality Assurance

–From the very beginning, VILLE ensures quality in every step to achieve the best quality.

 Experience Sharing

–With more than 30 years’ experience in power industry, VILLE brings you an optimized solution.

 Global Service

–Wherever you are, VILLE global network will support and provide you with value.

 Quick Response

–In response to your needs without delay, VILLE  knows the value of your time.

Thanks for choosing VILLE as your reliable partner and
please trust both of us will create a brilliant future!
/* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1