Question 1

Are you a manufacturer or a trading company?

Accepted Answer

We are a professional manufacturer with our own production facilities and engineering team.

Question 2

Do you accept factory inspection or audit?

Accepted Answer

Yes, we welcome factory inspections and audits. Customers or third-party inspection agencies are welcome to visit our factory at any time.

Question 3

What are the main components of the combined transformer?

Accepted Answer

A combined transformer usually consists of the transformer body, HV load break switch, HV fuse, LV distribution unit, oil tank, enclosure, cable connection device, and protection accessories.

Question 4

Can the rated capacity be customized?

Accepted Answer

Yes.other capacities can be provided according to project requirements, such as 315kVA, 500kVA, 630kVA, 800kVA, 1000kVA, 1600kVA, 2000kVA, and more.

Question 5

Can the voltage rating be customized?

Accepted Answer

Yes. Common high voltage ratings include 10kV, 11kV, 13.8kV, 20kV, 24kV, 33kV, and 35kV. The low voltage side is commonly 0.4kV/400V and can also be customized according to local grid requirements.

Question 6

Can the winding material be copper or aluminum?

Accepted Answer

Yes. The winding material can be copper or aluminum according to the customer's budget and technical requirements. Copper windings offer better conductivity and higher mechanical strength, while aluminum windings are more cost-effective.

Question 7

What protection devices can be equipped on the HV side?

Accepted Answer

The HV side can be equipped with load break switch, plug-in fuse, backup protection fuse, surge arrester, cable connector, and grounding device for short circuit protection, overload protection, and safe operation.

Question 8

What equipment can be configured on the LV side?

Accepted Answer

The LV side can be equipped with LV circuit breakers, outgoing circuits, metering devices, current transformers, surge protection devices, busbars, and reactive power compensation devices according to project requirements.

Question 9

What are the advantages of this product?

Accepted Answer

The ZGS-Z combined transformer features compact structure, small footprint, easy installation, strong outdoor adaptability, safe operation, simple maintenance, and flexible configuration.

Question 10

What is the difference between it and a European type compact substation?

Accepted Answer

An American type pad mounted transformer usually integrates the transformer, HV switch, and protection devices in a compact structure with a smaller footprint. A European type compact substation usually has separate HV, transformer, and LV compartments with clearer functional divisions and more flexible configuration. The selection depends on project requirements.

Question 11

What tests are performed before delivery?

Accepted Answer

Before delivery, routine tests usually include voltage ratio test, winding resistance test, insulation resistance test, no-load loss test, load loss test, impedance voltage test, power frequency withstand voltage test, sealing inspection, wiring inspection, and appearance inspection.

Question 12

What standards and certificates can the product comply with?

Accepted Answer

The product can be designed, manufactured, and tested according to IEC, GB, and other relevant standards. ISO certificate, CE documents, factory test report, technical data, CNAS test report, or third-party inspection report can be provided upon request, subject to the actual product and certification status.

Question 13

What information is required when ordering?

Accepted Answer

Customers usually need to provide rated capacity, high voltage, low voltage, frequency, vector group, winding material, loss level, impedance voltage, HV and LV configuration, incoming and outgoing method, protection degree, installation environment, and special technical requirements.

Question 14

What are the delivery time and packaging method?

Accepted Answer

The delivery time usually depends on capacity, configuration, quantity, and customization requirements. For standard projects, it is generally around 30 to 60 days. The product is usually packed with export-standard protective packaging, wooden case, steel frame, or integrated fixed packaging to ensure safe long-distance transportation.

Question 15

What regular maintenance is required?

Accepted Answer

Regular maintenance mainly includes checking whether the enclosure has corrosion or water ingress, whether the oil level and oil temperature are normal, whether cable connections are loose, whether grounding is reliable, whether protection devices are intact, and whether there is abnormal noise, odor, or oil leakage.

Product profile

Customization

Type

Structure

Model NO.

Certification

Form

Operation Voltage

Size

Application Range

Shell Material

Shell Protection Grade

Brand

Rated Capacity

Rated High Voltage

Rated Low Voltage

Insulating Medium

Vector Group

Voltage Tapping Range

Short-Circuit Impedance

Hv Configuration

Hv Switching Device

Hv Termination

LV Configuration

LV Outgoing Arrangement

LV Protection

Enclosure Protection Rating

Ambient Temperature

Transport Package

Specification

Trademark

Origin

HS Code

Production Capacity

Key features

Company profile

About Our Factory & Business Background

Our Production Capability & Technical Expertise

Our Industry Experience & Global Business Record

Our Certifications, Standards & Industry Recognition

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