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Ningbo Ville Electric Co., Ltd.

Transformer Tap Changer, Tap Changer for Transformer, on Load Tap Changer manufacturer / supplier in China, offering on-Load Tap Changer for Transformer Load Break Switch Tap Changer, 1-4m High Quanlity Earth Rod 2, Manual Hydraulic Press Tool and so on.

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Supplier Homepage Product Transformer Spare Parts Transformer tap changer on-Load Tap Changer for Transformer Load Break Switch Tap Changer

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

FOB Price: US $200-40,000 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $200-40,000/ Piece
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Port: Ningbo, China
Production Capacity: 50000 Sets
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram

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transformer tap changer
41 Products
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Basic Info
  • Model NO.: SV
  • Connection Method: Y,D
  • No of Contact: The Thin Contacts Are 10 or 14
  • No of The Middle Position: in The Middle Part There Are 0,1,3,
  • Trademark: VILLE
  • Specification: IEC CE, ISO
  • HS Code: 85
  • Max Rated Current: 200A 350A
  • Rated Voltage: 35kv or 66kv
  • No of Working Position: It Could Reach 19 or 27 Positions.
  • Voltage Regulating Method: Positive and Negative Voltage
  • Transport Package: Wooden Cases
  • Origin: Ningbo
Product Description
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
on-Load Tap Changer for Transformer Load Break Switch Tap Changer
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.
Max.rated current (A)350200
No. Of phases
Connect Method
Short-current test current (kA)Heat stabilization (3 seconds. )
Act-stabilization (peak value )
Voltage between grades (V)Spot 10
Spot 12
Spot 14
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