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Robust Voltage Transformer with Reliable Oil-Immersed Design Features
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

Uninterrupted Voltage Regulation: Continuous automatic voltage regulation under load without power interruption, stabilizing LV side within national standards.
Vacuum OLTC Technology: SYJZZ vacuum on-load tap changer with vacuum-bulb arc extinction, extending oil change intervals by 3 times and reducing maintenance.
Dual Oil-Chamber Isolation: Switch has a sealed oil compartment fully separated from main-tank oil, preventing contamination and extending transformer life.
Robust Copper Windings: High-purity oxygen-free copper windings with vacuum impregnation, passing national short-circuit withstand tests.
Intelligent Control System: Matched VQC controller enables local/remote automatic control with 3-6 second tap change speed and multi-layer safety interlocking.
Wide Application Adaptability: Suitable for 35kV substations, new-energy booster stations, and industrial plants with strong load fluctuations.
Customization Options: Supports customization from samples, designs, full customization, and minor customization for specific project needs.

Company profile

Zhejiang Tianrun Electric Co., Ltd.
Importers and ExportersFull Customization100% Finished Products InspectionR&D Capabilities
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: ≤0.21h

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:What is the main advantage of the SYJZZ vacuum OLTC?
A:
It uses vacuum-bulb arc extinction to confine switching arcs, preventing oil carbonization. This extends oil change intervals by 3 times and drastically cuts maintenance costs compared to traditional switches.
Q:How does the transformer handle voltage regulation under load?
A:
It performs continuous automatic voltage regulation under load without any power interruption. The SYJZZ switch changes taps within 3-6 seconds to keep the low-voltage side stable within national standards.
Q:Is the OLTC oil chamber isolated from the main transformer oil?
A:
Yes, the switch has its own sealed oil compartment fully separated from the main-tank insulating oil. This prevents arc-extinction impurities from contaminating the main winding oil.
Q:What are the standard safety accessories included?
A:
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 is the warranty or service support for this transformer?
A:
The product features a fully sealed anti-leakage tank and robust design for long-term service. It supports easy maintenance with reserved ports for oil filtering/sampling without lifting the core.

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