Introduction
Our oil filled pad mounted transformer keeps the transformer core and windings inside a fully sealed oil tank, fitted with gauges and valves for monitoring. The tank sits in one enclosure with the HV load switch, fuse and LV outlets, so engineers get a ready-to-connect unit.
It is the transformer-focused model in Gangheng's Transformer Substation range. Gangheng builds it at its Jiangshan, Zhejiang plant with CNC punching, CNC bending, laser cutting and copper busbar bending equipment.
Performance Data
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:
|
kVA |
No-Load Loss (kW) |
Load Loss, Gangheng / Int'l (kW) |
No-Load Current, Gangheng / Int'l (%) |
|
80 |
0.19 |
1.10 / 1.65 |
1.1 / 2.2 |
|
100 |
0.22 |
1.30 / 2.00 |
1.0 / 2.1 |
|
160 |
0.31 |
1.85 / 2.85 |
0.8 / 1.9 |
|
200 |
0.32 |
2.25 / 3.50 |
0.7 / 1.8 |
|
250 |
0.45 |
2.65 / 4.00 |
0.7 / 1.7 |
|
315 |
0.54 |
3.05 / 4.80 |
0.6 / 1.6 |
|
400 |
0.65 |
3.80 / 5.80 |
0.6 / 1.5 |
|
500 |
0.75 |
4.50 / 6.90 |
0.5 / 1.4 |
|
630 |
0.91 |
5.30 / 8.10 |
0.5 / 1.3 |
|
800 |
1.08 |
6.80 / 9.90 |
0.5 / 1.2 |
|
1000 |
1.26 |
8.10 / 11.60 |
0.4 / 1.1 |
|
1250 |
1.54 |
9.50 / 13.80 |
0.4 / 1.0 |
|
1600 |
1.86 |
11.40 / 16.50 |
0.4 / 0.9 |
|
Item |
Gangheng Series |
International Series (per brochure) |
|
Noise |
45 dB |
55 dB |
|
Top-Oil Temperature Rise |
50 K |
60 K |
|
Winding Temperature Rise |
65 K |
65 K |
|
Impedance Voltage, 80–500 kVA |
4% |
4% |
Gangheng ,as the manufacturer, lists low loss, low noise, low temperature rise, strong overload capacity, short-circuit resistance and impact resistance as the transformer's main performance features.
Tank Components
|
Component |
Role |
|
Oil level gauge |
Shows oil level |
|
Pressure gauge |
Shows tank pressure |
|
Pressure relief valve |
Relieves tank pressure |
|
Drain valve / oil filling tube |
Draining and filling oil |
|
Temperature indicator |
Shows temperature |
|
Off-circuit tap changer |
Tap adjustment |
|
Lightning arrester |
Overvoltage protection |
Selection Guide
Capacity bands: 80–250 kVA (no-load loss 0.19–0.45 kW) · 315–630 kVA (0.54–0.91 kW) · 800–1000 kVA (1.08–1.26 kW) · 1250–1600 kVA (1.54–1.86 kW)
Vector group: Yyn0 or Dyn11, chosen for the project circuit.
HV voltage: 6, 6.3 or 10 kV with 5% / 2.5% tapping.
Switch side: FYN-12 load switch, 400 A or 630 A.
HV schemes: four (terminal, dual-source, ring network with dual-source, HV metering). LV schemes: eight catalog options, or designed to your requirement.
-
Customization
Transformer model and capacity, HV and LV circuit diagrams, special component specifications, enclosure color and spare parts are the ordering items. Customized configurations usually cost the same as standard; width may increase. No MOQ.
-
Quality Certification
ISO 9001 · ISO 14001 · OHSAS 18001 · CCC · 5 utility-model patents. Gangheng's products are listed on the State Grid e-commerce platform, and Gangheng is a qualified State Grid and China Southern Power Grid supplier.
Manufacturing and Quality Control
Since 2004, more than 20 years of experience. 50–200 employees on a 5,000–20,000 m² site. Own testing equipment alongside the production machines.
-
Track Record
Xianglong Coal Mine (China), American-style substation, 2016. Zhejiang Wangpai Home: continuous switchgear supply since 2015.
Delivery and Trade Terms
USD 300,000 order: 30 days; USD 700,000: 45 days; USD 1,500,000: 60 days (approximate). No MOQ. New, unused equipment.
Warranty and After-Sales
12-month free warranty and 5 years of hidden-defect protection after that. 24/7 on-site support; spare parts at or below market price; documents and training.
Frequently Asked Questions
Q: What loss levels does this oil filled pad mounted transformer have?
A: No-load loss ranges 0.19–1.86 kW and load loss 1.10–11.40 kW from 80 to 1600 kVA.
Q: What noise and temperature rise?
A: 45 dB, 50 K top oil and 65 K winding.
Q: Which vector groups and taps?
A: Yyn0 and Dyn11; 5% / 2.5% tapping.
Q: Which monitoring parts are on the tank?
A: Oil level gauge, pressure gauge, pressure relief valve, temperature indicator, drain valve and oil filling tube.
Q: Is there a MOQ and what is the lead time?
A: No minimum; 30, 45 or 60 days by order value.
Q: What is covered by the warranty?
A: 12 months free, then 5 years of hidden-defect protection.
Q: Can it follow ANSI/IEEE or BS?
A: Yes, on request; GB/T is the default.
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