What is the lead time for production?

The average lead time is one month during peak season and within 15 workdays during the off-season.

Is customization available for this transformer?

Yes, customization options include samples, designs, full customization, and minor customization. OEM and ODM services are also available.

Reliable Voltage Transformer with Advanced Oil Immersion and Efficiency

Name: Reliable Voltage Transformer with Advanced Oil Immersion and Efficiency
Brand: Zhejiang Tianrun Electric Co., Ltd.
SKU: 2318745525

Zhejiang, ChinaZhejiang Tianrun Electric Co., Ltd.

US$5,869.00

1-9 Pieces

US$5,125.00

10+ Pieces

Product profile

Customization

Available

Application

Power, Lighting, Rectifier, Combined Transformer, Power Transformer,

Phase

Three

Model NO.

SZ13

Core

Core-type Transformer

Cooling Method

Oil-immersed Type Transformer

Winding Type

Two-winding Transformer

Certification

ISO9001-2000, ISO9001, CCC, CE

Usage

Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer, on-Load Tap Changing Transformer

Frequency Characteristics

Power Frequency

Shape of Core

Ring

Brand

Tenrony

Rated Frequency

50/60Hz

Rated Voltage/Hv

11/33kv/35kv

Rated Voltage/LV

400V

Transformer Capacity

1250-31500kVA

Connection of Transformer Winding

Ynd11

Winding

Copper

Protective Function

Outdoor IP23/Indoor IP44 Sealed Tank

Noise Level

≤ 52db/Silent Version ≤ 48db

Temperature Rise Limits

Top Oil ≤ 55K; Winding ≤ 65K

Insulation Level

Hv: Li200 AC85kv; LV: Li75 AC35kv

Total Tap Positions

17 (±8 Taps)

Short-Circuit Impedance

7% ±5%

No-Load Current

≤ 0.45%/Ultra-Low No-Load Current

No-Load Loss

3.15kw (Better Than National Grade-2)

Matched Tap Changer

Syjzz Vacuum Olt/Neutral-Point Type Syxzz

Transport Package

Wooden Case

Specification

1200*1850*2100mm

Trademark

TENRONY

Origin

China

HS Code

8504109000

Production Capacity

200/Monthly

Key features

Zero Interruption Regulation: Continuous automatic voltage regulation under full load without power interruption.

Vacuum OLTC Technology: SYJZZ vacuum on-load tap changer extends oil change interval 3 times and cuts maintenance costs.

Dual Oil-Chamber Isolation: Switch has its own sealed oil compartment, preventing contamination of main winding oil.

Robust Copper Windings: High-purity oxygen-free copper windings with vacuum impregnation for moisture resistance.

Intelligent VQC Control: Integrated controller enables local/remote automatic regulation with fault auto-lock functions.

Comprehensive Safety Protection: Includes Buchholz relay, pressure relief valve, and multi-layer safety interlocking mechanisms.

Company profile

Importers and ExportersFull Customization100% Finished Products InspectionR&D Capabilities

Zhejiang Tianrun Electric Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 Year CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤0.17h

About Our Factory & Business Background

AddressNo. 788 Wenyi Road, Bihu Industrial Park, Liandu District, Lishui, Zhejiang, China

Plant Area50369.12 square meters

Number of Employees167

Registered Capital107,580,000 RMB

Terms of PaymentT/T

International Commercial Terms(Incoterms)FOB, CIF

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

Minimum Order Quantity1

Supply Chain Partners80

Our Production Capability & Technical Expertise

Main ProductsTransformer Switchgear Substation

Production Lines2

Production MachinesPunching machine, Laser cutting machine, CNC bending machine, Winding machine, Drying machine

QA/QC inspectors3 people

Inspection Type for Finished Products100% inspection(Visual inspection & Function inspection)

Inspection Method for Finished ProductsFinished product checked by packing staff

R&D Engineers7 people

Traceability of Raw MaterialsYes

Our Industry Experience & Global Business Record

Year of Establishment2003-12-05

Main MarketsDomestic

Repeat Buyers Choice30%~50%

Number of Foreign Trading Staff1

Overseas Agent/BranchYes

New Products Launched in Last yearYes

Our Certifications, Standards & Industry Recognition

Management System CertificationISO9001:2015, ISO14001, ISO45001:2018

Product CertificationCE

Cooperated with Fortune 500No

Product Q&A

Q:Can the transformer regulate voltage without power interruption?

Yes, the built-in SYJZZ vacuum on-load tap changer allows continuous automatic voltage regulation under full rated load without any power interruption.

Q:What is the advantage of the vacuum OLTC over traditional switches?

The vacuum OLTC confines switching arcs inside the vacuum chamber, preventing oil carbonization. This extends the oil change interval by 3 times and drastically reduces maintenance costs compared to traditional oil-arc switches.

Q:How does the dual oil-chamber design protect the transformer?

The switch has its own sealed oil compartment fully separated from the main-tank insulating oil. Arc-extinction impurities stay inside the switch oil only and never contaminate the main winding oil, greatly extending service life.

Q:What are the standard safety accessories included?

Standard accessories include conservator, pressure relief valve, Buchholz gas relay, oil & winding temperature controller, oil level gauge, dehydrating breather, earthing device, and OLTC motor-driven operating box.

Q:What are the typical application scenarios for this transformer?

It is ideal for 35kV urban substations, new-energy booster stations (PV/wind), large industrial plants (chemical/metallurgy), data centers, and hospitals requiring uninterrupted power supply.