ZGS11-H(Z) Combined Transformer

ZGS11 combined transformers are high-tech products independently developed by our company based on the technology of American padmounted transformers, also known as American-style box-type substations. They feature strong integration, reliable power supply, small size, light weight and low noise, with looped network type and terminal type cable outgoing lines. Application of this product enables the 10kV power grid to extend deep into load centers, reducing line loss and improving power supply reliability, making it suitable for urban grid renovation.

product details

Type & Meaning

Z	Combined Transformer
G	Common Tank Type
S	Three-Phase
11	Performance Level Code
H(Z)	High-Voltage Wiring Mode: H for Looped Network Type, Z for Terminal Type
□	Rated Capacity (kVA)
□	Voltage Class (kV)

Applicable Standards

◇ JB/T10217-2000 Combined Transformers
◇ GB1094.1~2-1996 Power Transformers
◇ GB3804-1990 AC High-Voltage Load Switches for 3~63kV
◇ GB7251.1-1997 Low-Voltage Switchgear and Controlgear – Part 1: Type-Tested and Partially Type-Tested Assemblies

product Display

S11 Type 35kV Series Distribution Transformer back

Technical Parameters

Technical Parameters of ZGS11-H(Z)-200~1000/10 Combined Transformer

Rated Capacity (kVA)	Voltage Combination (kV)			Connection Symbol	No-Load Loss (W)	Load Loss (W)	Short-Circuit Impedance (%)	No-Load Current (%)	Weight (kg)			Overall Dimensions (mm)	High-Voltage Wiring Mode
Rated Capacity (kVA)	High Voltage	Tap (%)	Low Voltage	Connection Symbol	No-Load Loss (W)	Load Loss (W)	Short-Circuit Impedance (%)	No-Load Current (%)	Body Weight	Oil Weight	Total Weight	L×W×H	High-Voltage Wiring Mode
200	10	±2× 2.5	0.4	Yyn0 Or Dyn11	335	2600	4.0	0.60	601	733	1894	1865×1240×1735	Looped Network Type (H) or Terminal Type (Z)
250					390	3050		0.50	716	749	2060	1865×1280×1735
315					465	3650		0.45	835	733	2148	1865×1730×1735
400					560	4300		0.40	1006	729	2375	1865×1440×1805
500					670	5100		0.40	1156	747	2603	1865×1450×1805
630					840	6200	4.5	0.40	1295	757	2826	1865×1450×1860
800					980	7500		0.40	1521	872	3357	1865×1495×1860
1000					1190	10300		0.30	1634	970	3704	1865×1510×1860

Note: The weight and overall dimension data in the table are for reference only; no prior notice will be given for any changes.

Product Features

◇ Compared with Type "9" transformers, this product reduces no-load loss by 30.12% and average annual operating cost by 20.03%, with low noise, making it an environmentally friendly product.
◇ The transformer body, high-voltage load switch (or high-voltage load transfer switch), fuses, off-circuit tap-changer, etc., are all placed in a fully sealed oil tank, improving space utilization. Its volume is only about 1/3 of that of combined substations (also known as European-style substations) of the same voltage class and capacity, and the weight is also greatly reduced.
◇ High-voltage and low-voltage compartments are isolated and interlocked: the high-voltage compartment door can only be opened after the low-voltage compartment door is opened, and high-voltage terminals are fully insulated, ensuring high safety.
◇ It adopts a full-range protection method combining two-stage fuses (backup current-limiting fuses and plug-in fuses), which is safe and reliable, flexible in operation and convenient for fuse replacement.
◇ The oil tank is of fully sealed structure, isolating the oil inside from the outside, with no leakage and maintenance-free.