Why does the transformer produce noise, and how to reduce it?

The main noise source is the magnetic vibration of the iron core and winding. To reduce noise: 1) Select low-noise models (operation noise <65dB is recommended for indoor use); 2) Install shock-absorbing pads at the base during installation; 3) Keep the transformer away from rigid structures that may amplify vibration.

10kVA 75kVA 200kVA Amorphous Transformer Core Mv&Hv Single Phase Pole Mounted Transformer

Name: 10kVA 75kVA 200kVA Amorphous Transformer Core Mv&Hv Single Phase Pole Mounted Transformer
Brand: Chongqing Zexing Electrical Equipment Co., Ltd.
SKU: 2131234672

Chongqing, ChinaChongqing Zexing Electrical Equipment Co., Ltd.

US$650.00

50 Pieces

Product profile

Customization

Available

Application

Electronic

Phase

Single

Model NO.

transformer

Core

Core-type Transformer

Cooling Method

Oil-immersed Type Transformer

Winding Type

Separated Winding Transformer

Certification

ISO9001-2000, ISO9001

Usage

Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer

Frequency Characteristics

Power Frequency

Shape of Core

Brand

Zexing

Warranty

1 Years

Frequency

50Hz/60Hz

Rated Capacity

0.5-2000kVA

Type

Single Transformer

Output Voltage

110V, 220V Customized

Input Voltage

13.2kv Customized

Transport Package

Wooden Cartons

Specification

AS PER CLIENT REQUIRED

Trademark

ZEXING

Origin

Chongqing China

HS Code

8504329000

Production Capacity

500000

Key features

Multiple Capacity Options: Available in 15kVA, 25kVA, and 37.5kVA to fit diverse load demands.

Pole-Mounted Design: Compact structure saves land space and allows easy installation in limited areas.

Weather-Resistant Construction: Durable casing resists rain, dust, and temperature fluctuations for outdoor use.

Stable Voltage Conversion: Steps down 13.8kV to 120/240V for safe daily electrical use.

Low Upkeep Cost: Simple structure requires no complex maintenance procedures.

ISO 9001 Certified: Manufacturing meets international quality management standards.

Efficient Power Distribution: Minimizes energy loss to ensure reliable power supply for end-users.

Customizable Output Voltage: Output voltage can be customized to 110V or 220V based on needs.

Company profile

Chongqing Zexing Electrical Equipment Co., Ltd.

Chongqing, China

Business Type: Manufacturer/FactoryExport Year: 2020-03-01Nearest Port: Chongqing, Shanghai, NingboAverage Response Time: ≤3.70hTerms of Payment: LC, T/TInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, CIP, FCA

AI-Powered supplier vetting

SummaryThe supplier is a limited company with five employees and a valid import/export license. It reports an annual production capacity of 60,000 tons and cooperation with Chinese national and local power grids, but the provided information does not independently verify these claims. The supplier offers sample, design, full, and minor customization, provides ODM services, and reports new product activity during the past year, with one R&D engineer identified. Service limitations include no overseas agents or branches, overseas warehouses, overseas showroom, inventory capability, or offline trade-show participation. Financial records are indicated for 2021–2023, but no financial figures or assessment results are provided. No formal certification, after-sales capability, or specific customer cases are documented.

Supplier typeThe supplier is legally identified as a limited company, not part of a larger company group, with five employees and a valid import/export license. Its stated business scopes cover mechanical equipment, wind turbines and components, rail-transit systems, environmental equipment, underwater systems, hardware, and other products, indicating a diversified trading and industrial-equipment profile.

R&D capabilityThe supplier reports new products during the past year, identifies one R&D engineer, and provides ODM services. However, it has no available SDK, and no R&D spending, patents, laboratory resources, or documented innovation results are supplied; the evidence supports some innovation activity but not a broad or strongly validated capability.

Production capacityThe supplier states annual production capacity of 60,000 tons and the ability to produce multiple product lines simultaneously while shortening production cycles. It reports one-month average lead times in both peak and off-season, but no inventory capability, no confirmed manufacturing-capacity contract, and no detailed product-specific tonnage are provided.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, and minor customization. It also reports ODM service availability, providing direct evidence of broad product-design and customization support.

Client casesThe supplier states that it is one of the cooperating manufacturers for the Chinese National Power Grid and local power grids. This is a stated customer-related reference, but no customer names, contracts, project details, order scope, or independent verification are provided; no other specific customer cases are documented.

Product Q&A

Q:How to select the appropriate transformer capacity?

The capacity should be determined based on the total actual load power, with a 10%-20% redundancy reserved. For example, if the total load is 12kW, a 15kVA transformer is recommended to avoid overload, which may cause overheating or equipment failure.

Q:What are the differences between dry-type transformers and oil-immersed transformers?

Dry-type transformers have no flammable oil, featuring higher safety and environmental friendliness, suitable for indoor or dense population areas. Oil-immersed transformers offer excellent heat dissipation and lower cost, ideal for outdoor use or large-capacity scenarios, but require regular maintenance.

Q:What qualifications are required for transformer installation?

The installation must be conducted by professional personnel with electrical power installation qualifications. Meanwhile, the installation must comply with local power grid regulations and safety standards (such as IEC 60076, ANSI C57.12.00, or regional-specific standards).

Q:What does the transformer warranty cover?

Generally, the warranty covers quality issues caused by non-human factors, including coil failures, insulation breakdown, and core defects. The specific coverage is subject to the supplier's terms, and the warranty period is usually 12 to 24 months from the date of installation or commissioning.

Q:What protective measures are needed for outdoor-installed transformers?

Firstly, choose products with a protection level of IP65 or above to resist dust and water intrusion. Secondly, complete lightning protection and grounding measures must be implemented in accordance with local meteorological and electrical codes. Additionally, it is necessary to regularly clean dust and debris on the transformer surface to ensure normal heat dissipation.