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Efficient Tap-Changing Main Transformer with Two-Winding Oil Immersion
US$5,869.00
1-9 Pieces
US$5,125.00
10+ Pieces
Product profile
Customization
AvailableApplication
Power, Lighting, Rectifier, Combined Transformer, Power Transformer,Phase
ThreeModel NO.
SZ13Core
Core-type TransformerCooling Method
Oil-immersed Type TransformerWinding Type
Two-winding TransformerCertification
ISO9001-2000, ISO9001, CCC, CEUsage
Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer, on-Load Tap Changing TransformerFrequency Characteristics
Power FrequencyShape of Core
RingBrand
TenronyRated Frequency
50/60HzRated Voltage/Hv
11/33kv/35kvRated Voltage/LV
400VTransformer Capacity
1250-31500kVAConnection of Transformer Winding
Ynd11Winding
CopperProtective Function
Outdoor IP23/Indoor IP44 Sealed TankNoise Level
≤ 52db/Silent Version ≤ 48dbTemperature Rise Limits
Top Oil ≤ 55K; Winding ≤ 65KInsulation Level
Hv: Li200 AC85kv; LV: Li75 AC35kvTotal Tap Positions
17 (±8 Taps)Short-Circuit Impedance
7% ±5%No-Load Current
≤ 0.45%/Ultra-Low No-Load CurrentNo-Load Loss
3.15kw (Better Than National Grade-2)Matched Tap Changer
Syjzz Vacuum Olt/Neutral-Point Type SyxzzTransport Package
Wooden CaseSpecification
1200*1850*2100mmTrademark
TENRONYOrigin
ChinaHS Code
8504109000Production Capacity
200/MonthlyKey features
Uninterrupted Voltage Regulation: Continuous automatic voltage regulation under load without power interruption, stabilizing LV bus voltage.
Vacuum OLTC Technology: SYJZZ vacuum on-load tap changer with vacuum-bulb arc extinction, extending oil change intervals by 3 times.
Dual Oil-Chamber Isolation: Switch has its own sealed oil compartment, fully separated from main-tank oil to prevent contamination.
Intelligent Control System: Matched VQC controller supports local automatic, manual-motorized, and remote control with fault auto-lock.
Robust Copper Windings: High-purity oxygen-free copper windings with vacuum-impregnation for moisture resistance and low partial discharge.
Wide Application Scope: Ideal for 35kV substations, new-energy booster stations, data centers, and continuous industrial production lines.
Customization Options: Supports customization from samples, designs, full customization, and minor customization.
Company profile
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:Does the transformer require power interruption during tap changing?
A:
No, it performs continuous automatic voltage regulation under load without any power interruption, unlike conventional transformers that require full station outage.
Q:How does the SYJZZ vacuum OLTC improve maintenance?
A:
It uses vacuum-bulb arc extinction which prevents oil carbonization, extending the oil change interval by 3 times and drastically cutting maintenance costs.
Q:What safety protections are included in the OLTC system?
A:
It includes independent oil chamber protection, gas relay, refusal-to-operate and overcurrent fault tripping, and mechanical/electronic dual tap-position indication.
Q:Can this transformer be customized for specific projects?
A:
Yes, we offer customization from samples, designs, full customization, and minor customization options.
Q:What is the lead time for production?
A:
Peak season lead time is one month, while off-season lead time is within 15 workdays.
Send Inquiry
*To:
Zhejiang Tianrun Electric Co., Ltd.
Zhejiang Tianrun Electric Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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