What payment terms are accepted?

We accept LC, T/T, PayPal, Western Union, and small-amount payments.

What is the rated voltage and current?

The rated voltage is 36KV, with rated current options of 30A and 63A.

High-Quality De-energized Linear Tap Changer for Power Transformers

Name: High-Quality De-energized Linear Tap Changer for Power Transformers
Brand: Nanjing Rainbow Electric Co., Ltd.
SKU: 2140998585

Jiangsu, ChinaNanjing Rainbow Electric Co., Ltd.

US$5.00-20.00

50 Pieces

Sample price:US$10.00/piece.Request sample

Product profile

Customization

Available

Application

Power, Electronic, Instrument

Phase

Three

Model NO.

tap changer

Core

Core-type Transformer

Cooling Method

Dry-type Transformer

Winding Type

Two-winding Transformer

Certification

ISO9001-2000, ISO9001, CCC

Usage

Single-phase Transformer, Power Transformer, Distribution Transformer

Frequency Characteristics

Power Frequency

Brand

NJREC

Rated Voltage

36KV

Rated Current

30A 63A

Length

530mm

Height

70mm 100mm 120mm 130mm 150mm 170mm 200mm

Transport Package

Wooden

Trademark

NJREC

Origin

Jiangsu, China

Production Capacity

20000pieces/Year

Key features

No-Load Operation Design: Specifically designed for de-energized power transformers to ensure safety and prevent arcing.

Central Tapping Configuration: Features Type II central tapping with six taps per phase connected to the high-voltage winding mid-point.

Oil Immersion Cooling: Mechanism is fully immersed in insulating transformer oil for dielectric strength and heat dissipation.

Compact Robust Structure: Bar-type switch design ideal for medium voltage networks up to 10 kV and distribution transformers.

Multiple Height Options: Available in various heights including 70, 100, 120, 130, 150, 170, and 200 mm.

Verified Contact Integrity: Mandatory post-adjustment DC resistance testing ensures reliable electrical connections.

Professional Technical Support: NJREC offers competitive pricing, fast delivery, and dedicated after-sales service.

Company profile

Nanjing Rainbow Electric Co., Ltd.

Jiangsu, China

Business Type: Manufacturer/Factory, Trading Company, Group CorporationExport Year: 2002-02-10Nearest Port: Shanghai Port, China, Nanjing Port, China, Ningbo Port, ChinaAverage Response Time: ≤3.68hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, DDP, DAP, FCA, EXW

About Our Factory & Business Background

AddressNo. 396 Heyan Road, Nanjing, Jiangsu, China

Average Lead TimePeak Season Lead Time: one month Off Season Lead Time: within 15 workdays

Our Production Capability & Technical Expertise

Main ProductsTransformer Bushing, Porcelain Insulator, Composite Insulator, Condenser Bushing, Glass Insulator, Insulation Materials, Wall Bushing, Porcelain Bushing, Tap Changer

Our Industry Experience & Global Business Record

Main MarketsNorth America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe

Product Q&A

Q:What is the difference between this tap changer and an OLTC?

Unlike On-Load Tap Changers (OLTC) that switch under full load, this WST II model is a no-load (de-energized) tap changer that must operate only when the transformer is off.

Q:Can this tap changer be used under load?

No, it strictly prohibits operation under load to prevent arcing and equipment damage; it is designed for de-energized environments only.

Q:What are the available height dimensions?

The product is available in multiple height options: 70mm, 100mm, 120mm, 130mm, 150mm, 170mm, and 200mm.

Q:How is the mechanism cooled and insulated?

The entire mechanism is immersed in insulating transformer oil to ensure dielectric strength and effective heat dissipation.

Q:What is the lead time for orders?

During peak season, the lead time is one month, while off-season lead time is within 15 workdays.