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ZGS11 Prefabricated Substation (American Style Packaged Substation)


ZGS11 prefabricated substation is used for 12kV ring network power supply, dual power supply or terminal power supply systems. It takes the role of power transformation, power distribution, measurement, compensation, control and protection. It is commonly known as American style packaged substation. The body of transformer, high voltage load switch and fuse protector are all in the transformer oil tank, to reduce the volume, compact the structure, and ease the installation.

Product introduction


This series of substation is developed based on the actual situation in China. The transformer is S11 series. Four-position load switch, two-position load switch, backup protection fuse and plug-in fuse are installed on the high voltage side. Controlling appliance, power distribution appliance, compensation device and electric energy meter are installed on the low voltage side. The transformer oil takes the role of insulation and arc-extinguishing medium. The overall substation features small volume, easy maintenance, low noise, low loss, theft prevention, high overload capacity and all-round protection. It is suitable for new-built residence communities, green belts, gardens, bus stations, wharves, hotels, construction sites and airports.

Working conditions:
1. Altitude: ≤ 1000m (must using other different designs if >1000m)
2. Wind pressure: ≤ 70Pa (=35m/s)
3. Humidity: daily average ≤ 95%, monthly average ≤ 90%
4. Ambient temperature: +40℃ ~ -25℃
5. Shockproof level: horizontal acceleration 0.4/S, vertical acceleration 0.15m/s
6. Earthquake intensity: 8°
7. Gradient of installation site: ≤ 3°
8. Installation environment: no corrosive or flammable gas or vapor, and no severe vibration



Technical parameters:
No.
Items
Units
Values
1
Rated Voltage
Primary Side
kV
12
Secondary Side
kV
0.4, 0.23
2
Rated Capacity
 
kVA
100, 125, 160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500
3
No-Load Voltage Regulation
 
 
±2×2.5%
4
Connection Mode
 
 
△/Yn11
5
Rated Insulation Level
Lightning Impulse Withstand Voltage (Full Wave, Peak)
kV
75
1min Power Frequency Withstand Voltage
kV
35
6
Power Frequency Withstand Voltage on Low Voltage Side
Phase to Phase and Phase to Ground (1min)
Major Loop
kV
2.5
Control and Measuring Loop
kV
2.0
7
Acoustic Level
 
dB
50
8
IP Code
 
 
IP34
9
Cooling Mode
 
 
ONAN

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