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Good Quality Non Excited Strip On Load Tap Changers And Switch
US$20.00
20-999 Pieces
US$15.00
1,000-9,999 Pieces
US$10.00
10,000+ Pieces
Sample price:US$10.00/piece.Request sample
Product profile
Customization
AvailableApplication
Power, Electronic, InstrumentPhase
SingleModel NO.
Tap changerCore
Core-type TransformerCooling Method
Oil-immersed Type TransformerWinding Type
Two-winding TransformerCertification
ISO9001-2000, ISO9001, CCCUsage
Single-phase TransformerFrequency Characteristics
Power FrequencyBrand
NJRECRated Voltage
36KVRated Current
30A 63ALength
530mmHeight
70mm 100mm 120mm 130mm 150mm 170mm 200mmSpecification
kilogramTrademark
NJRECOrigin
Jiangsu ChinaProduction Capacity
20000pieces/YearKey features
No-Load Tap Changer Design: WST II model designed for off-circuit operation to ensure safety and prevent arcing.
Central Tapping Configuration: Type II design with six taps per phase connected to the high-voltage winding mid-point.
Oil Immersion Cooling: Mechanism immersed in insulating transformer oil for dielectric strength and heat dissipation.
Medium Voltage Compatibility: Specifically designed for three-phase bar-type switching in networks up to 10 kV.
Robust Compact Structure: Ideal for distribution transformers ensuring stable voltage levels with strict safety protocols.
Mandatory DC Resistance Testing: Post-adjustment testing required to confirm contact integrity and installation accuracy.
Global Market Presence: Exporting to North America, Europe, Asia, Africa, and Oceania since 2002.
Company profile

Business Type: Manufacturer/Factory, Trading Company, Group CorporationExport Year: 2002-02-10Nearest Port: Shanghai Port, China, Nanjing Port, China, Ningbo Port, ChinaAverage Response Time: ≤2.65hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, DDP, DAP, FCA, EXW
AI-Powered supplier vetting
SummaryNanjing Rainbow Electric Co., Ltd., operating from Jiangsu, China, is a trading company and manufacturer with a focus on electrical components. The company has a significant export market, accounting for 51% to 70% of its sales. They offer diverse customization services, although they lack 3D design capabilities and ODM services. With a workforce of 10, they do not participate in offline trade shows or maintain overseas facilities. Despite having no new product developments recently, they maintain flexible design capabilities. Financial data from the past three years is available, indicating stable financial tracking.
Supplier typeThe supplier operates as a trading company, manufacturer, and group corporation, indicating a multifaceted business structure.
After-Sales capabilityThe supplier's R&D engineers are responsible for after-sales technical support, indicating some capability in this area.
Financial creditThe supplier has documented financial data for the past three years, suggesting consistent financial tracking.
R&D capabilityNo new products were developed in the past year, and no 3D design services or ODM services are offered, showing limited innovation capability.
Customization capabilityThe supplier offers extensive customization services, including full and flexible customization based on samples and designs.
Product Q&A
Q:What is the difference between this tap-changer and an OLTC?
A:
This is a no-load (off-circuit) tap-changer that must operate only when the transformer is de-energized, unlike OLTCs which switch under full load.
Q:What is the maximum voltage for this model?
A:
The WST II is designed for medium voltage networks up to 10 kV.
Q:How is the mechanism cooled and insulated?
A:
The entire mechanism is immersed in insulating transformer oil to ensure dielectric strength and heat dissipation.
Q:What safety protocols are required during operation?
A:
Operation under load is strictly prohibited to prevent arcing and equipment damage.
Q:What is the average lead time for delivery?
A:
Peak season lead time is one month, while off-season lead time is within 15 workdays.
Send Inquiry
*To:
Nanjing Rainbow Electric Co., Ltd.
Nanjing Rainbow Electric Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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