Introduction
For a project, a distribution point usually means three separate purchases: a high-voltage switch, a transformer and a low-voltage panel, plus a room or enclosure for them. This electrical padmount substation replaces them with one outdoor unit that carries the HV control and protection, the oil-immersed transformer and the LV distribution gear.
It sits in the Transformer Substation category as Gangheng's American-style box unit. Its footprint is about 1/3 to 1/5 of a same-capacity domestic European-style box substation, according to the manufacturer's comparison. Related model page: Pad Mounted Substation.
Made at Gangheng's Jiangshan, Zhejiang plant, which uses CNC punching, CNC bending, laser cutting and copper busbar bending machines and tests its own products.
What Is Inside One Unit
Specifications for an oil filled pad mounted transformer are driven by losses and temperature rise. The table lists the Gangheng series, with the brochure's international-series reference values for comparison:
|
Section |
Main Components |
|
High-voltage |
Load switch, bayonet-type fuse, lightning arrester, elbow cable connector |
|
Transformer |
Fully sealed oil tank, off-circuit tap changer, oil and temperature monitoring |
|
Low-voltage |
Main switch, branch switches, optional reactive compensation, LV bushings |
Low-Voltage Schemes
In any electrical padmount substation the low-voltage side decides how loads are fed. Eight schemes are offered:
|
Scheme |
Main Switch |
Branch Switches |
Compensation |
|
1 |
- |
100–630 A |
- |
|
2 |
630–1600 A |
100–630 A |
- |
|
3 |
- |
100–630 A |
- |
|
4 |
630–1600 A |
100–630 A |
- |
|
5 |
- |
100–630 A |
30–300 kvar |
|
6 |
630–1250 A |
100–630 A |
30–300 kvar |
|
7 |
- |
100–630 A |
30–300 kvar |
|
8 |
630–1250 A |
100–630 A |
30–300 kvar |
These are catalog schemes. Not every switch, metering and compensation element can be freely combined; we confirm the final configuration against your load and wiring.
The HV side has four supply options (terminal, dual-source, ring network with dual-source, HV metering)
Technical Parameters
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|
Item |
Specification |
|
Transformer Capacity |
80–1600 kVA |
|
HV Voltage |
6, 6.3 or 10 kV (model rated 12 kV) |
|
LV Voltage |
0.4 kV |
|
HV Load Switch |
FYN-12, 315–630 A |
|
Protection Degree |
IP33 |
|
Construction |
Oil-immersed, fully sealed, fully insulated |
Standard configuration follows GB/T; ANSI/IEEE, BS and other standards can be applied on request.
Customization and Quotation Data
The LV side can follow a catalog scheme or be designed to your requirement. In most cases, a customized configuration is priced the same as the standard one, and the enclosure width may be increased depending on the configuration. No minimum order; one unit is accepted.
|
Send Us |
Why |
|
Transformer model and capacity |
Sets the unit rating |
|
HV and LV main circuit diagrams |
Fixes the supply and distribution scheme |
|
Special component models and specifications |
For non-catalog parts |
|
Enclosure color |
Manufacturer decides if none is specified |
|
Spare parts names and quantities |
For project spares |
No drawings? Send the site, equipment load and required function, and our engineers propose a scheme.
Typical Configuration Cards
Multi-feeder LV distribution: branch switches of 100–630 A
With LV main switch: 630–1600 A or 630–1250 A, depending on scheme
With reactive compensation: 30–300 kvar in Schemes 5–8
Custom LV design: designed to your requirement
-
Quality Certification
ISO 9001 · ISO 14001 · OHSAS 18001 · CCC · 5 utility-model patents. Products are listed on the State Grid e-commerce platform; Gangheng is a qualified supplier to State Grid and China Southern Power Grid.
-
Manufacturing and Quality Control
Founded in 2004; over 20 years in distribution equipment. 50–200 employees, 5,000–20,000 m² site, annual revenue CNY 50–100 million. The Jiangshan plant is a short distance from the G3 expressway and the railway station, which supports dependable shipping.
-
Track Record
Xianglong Coal Mine (China): American-style substation, mining site, 2016. Shangrao Qianshan Jizhi: customized KYN28-12 switchgear batch, accepted. CHN Energy Shendong Coal Group: box-type substation, 2020.
Delivery and Trade Terms
Lead time scales with order value: about USD 300,000 in 30 days, USD 700,000 in 45 days, USD 1,500,000 in 60 days. No MOQ. All equipment is new.
Warranty and After-Sales
12 months free after acceptance, followed by 5 years of hidden-defect protection. 24/7 on-site support, spare parts at no more than market price, technical documents and training, and defect handling during installation and commissioning.
Frequently Asked Questions
Q: What does one electrical padmount substation include?
A: HV load switch and fuse, an oil-immersed transformer, and an LV section with switches and optional compensation.
Q: Which LV scheme should I choose?
A: Pick by main switch need and whether you want 30–300 kvar compensation; we confirm against your load.
Q: Can LV be designed to my requirements?
A: Yes, the LV side can follow a scheme or be designed to your requirement.
Q: Does customization change price?
A: In most cases no; the width may increase.
Q: What is the minimum order and lead time?
A: No minimum; lead time is 30, 45 or 60 days by order value.
Q: What does the warranty include?
A: 12 months plus 5 years of hidden-defect protection.
Q: What information do you need for a quote?
A: The five items in the table above.
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