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ZGS Series Pad-Mounted Transformer (American-Style Box Transformer)

1.Compact Size & Space-Saving Design
2.Fully Sealed & Insulated
3.Flexible Power Supply Options
4.Low Loss & Low Noise
5.Plug-In Cable Connections
6.High-Voltage Dual Fuse Protection
7.Anti-Theft Enclosure Design
8.Customizable according to customer requirements.

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Product Introduction

  • The ZGS Series Pad-Mounted Transformer (also known as American-style box transformer) is a modern, high-efficiency distribution device. Key components—including high-voltage load switches, plug-in fuses, and high-voltage current-limiting fuses—are installed inside the transformer oil tank, using mineral oil for insulation and cooling. The compact structure, small footprint, flexible installation, and user-friendly operation make it ideal for urban distribution network load centers, reducing losses and improving power quality. This series has been widely used in residential communities, public facilities, and industrial and commercial distribution networks across cities and towns.

ZGS-H(Z)-11

Application Scenarios

  • Urban distribution network load centers
  • Residential communities and public facilities
  • Industrial enterprises and industrial parks
  • Ring network and terminal power supply systems
  • Cabled distribution networks
  • Overall, the ZGS Series Pad-Mounted Transformer (American-Style Box Transformer) combines high reliability, low loss, compact structure, and flexible installation, making it an ideal high-efficiency and energy-saving distribution solution for urban and industrial power networks.

ZGS-H(Z)-10

Operating Environment

  • Ambient Temperature: Maximum +40°C, minimum -30°C
  • Altitude: ≤1000m
  • Maximum Wind Speed: 34 m/s (≤700 Pa)
  • Humidity: Daily average ≤95%, monthly average ≤95%
  • Seismic Resistance: Horizontal acceleration ≤0.4 m/s², vertical acceleration ≤0.15 m/s²
  • Installation Tilt: ≤3°
  • Installation Environment: Surrounding air free from corrosive or flammable gases, and without severe vibrations
  • Note: For orders exceeding the above conditions, please consult the manufacturer for customization.

Product Parameter

Performance Parameters of ZGS Series Pad-Mounted Transformer
Performance Level of 10kV Preassembled Transformer Station Using S9,S10 and S11 Oil-immersed Transformer
No. Rated Rated Voltage Voltage Connect- No-load Current Loss(W) Resista- Noise Temperature
Capacity Adjusting ion Unit (%)    nce (dB) Rise
(kVA) High Low Range Symbol No-load Load Voltage
Voltage Voltage   (%) No-load Load    (%)
  (kV) (kV) S9 S10/S11 S9 S10 S11 S9   S10/S11
1 30

6

6.3

10

0.4

0.69

±5

±2×2.5

Yyn0

Dyn11

 2.2 2.0 130 600 4 5.5 Top Level Oil Temperature 60 ℃ Coil65℃
2 50 2.0 1.8 170 870
3 63 1.9 1.5 200 1040
4 80 1.7 1.2 250 1250
5 100 1.6 11.0 290 1500
6 125 1.5 1.0 340 270 1800
7 160 1.4 1.0 400 310 2200
8 200 1.4 0.8 480 375 2600
9 250 1.2 0.8 560 455 400 3050 3000
10 315 11 0.7 670 540 475 3650 3600
11 400 1.0 0.7 800 650 570 4300 4200
12 500 1.0 0.6 960 775 680 5100 5000
13 630 0.9 0.6 1200 920 800 6200 6000
14 800 0.8 0.6 1400 1120 980 7500 7400 4.5
15 1000 0.7 0.5 1700 1320 1150 10300 9860
16 1250 0.6 0.5 1950 1560 1360 12800 12000
17 1600 0.6 0.5 2400 1880 1640 14500 14000
Note:   The high tapping range of the transformer can be designed as±2×2.5%up on customer's request.
The low voltage of the transformer can be designed as 0.69kV upon customer's request.

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