100 kVA Pad-Mounted Distribution Transformer is prepared for ground-level utility and industrial distribution. This series description presents the application, construction, protection, and specification details in finished product copy.
Key Advantages
For ground-level utility and industrial distribution, key Advantages is treated as a practical design and selection point rather than generic catalog wording.
Engineered for reliable medium-load distribution, this 100 kVA pad-mounted transformer offers copper or aluminum coil options and supports both 50 Hz and 60 Hz operation. Its compact footprint reduces site space requirements.
Product Use
For ground-level utility and industrial distribution, product Use is treated as a practical design and selection point rather than generic catalog wording.
ZBW-12/0.4 pre-installed substation is a type of American-style prefabricated box-type substation. As an integrated prefabricated product, it combines the cable of the distribution network power supply unit, high-voltage control and protection devices, substation components, and power distribution equipment. It is widely used in urban and rural power distribution networks.
The product is equipped with high-voltage load switches and high-voltage fuses in the transformer oil tank, and has two structural forms: integrated transformer tank and separate transformer tank. The tank adopts a fully sealed structure, and is equipped with oil temperature gauges, oil level gauges, pressure gauges, pressure release valves, drain valves, and other components to monitor the operation status of the transformer.
According to the power supply mode, the product is classified into ring network type and terminal type. To make this product more suitable for the actual requirements of China's power grid, the company has also launched plug-type fuses, which do not affect the performance of transformer oil.
Based on the complexity of low-voltage outgoing circuits, ZBW-12/0.4 products are divided into three cabinet types: standard type, enhanced type, and comprehensive type. This allows users and design units to make more flexible and cost-effective selections.
Model Description
For ground-level utility and industrial distribution, model Description is treated as a practical design and selection point rather than generic catalog wording.
Taking the ZBW series as an example, the model is represented as ZBW - 12/0.4 - □ - □ - □.
The first part "ZBW" indicates the prefabricated substation.
"12/0.4" represents the rated voltage levels, with 12kV for the high - voltage side and 0.4kV for the low - voltage side.
The subsequent boxes respectively denote the high - voltage measurement of rated voltage (KV), low - voltage measurement of rated voltage (KV), and rated capacity of the transformer (KVA).
Environmental Conditions of Use
For ground-level utility and industrial distribution, environmental Conditions of Use is treated as a practical design and selection point rather than generic catalog wording.
Cooling condition: Air self-cooling 2. Operating environment: The outdoor ambient temperature shall not be higher than 40℃ or lower than -45℃; the altitude shall not exceed 1000m; the monthly average temperature shall not exceed 30℃; the annual average temperature shall not exceed 20℃. At 25℃, the relative humidity of the air shall not exceed 95%, and the monthly average relative humidity shall not exceed 90%. Horizontal acceleration shall not exceed 0.3g; vertical acceleration shall not exceed 0.15g. The installation environment shall be free from obvious pollution, as well as explosive or corrosive gases and dust. The installation site shall be free from violent vibration and impact, and the equipment shall be installed on a cement platform or other flat, solid platforms. 3. Note: If the intended use conditions deviate from the above technical specifications, the user shall negotiate with the company.
Product Advantages
For ground-level utility and industrial distribution, product Advantages is treated as a practical design and selection point rather than generic catalog wording.
Compact structure and small size: Its volume is only about 1/3 to 1/5 of that of domestic European-style box-type substations with the same capacity, greatly reducing the floor area.
Fully sealed and fully insulated structure: It requires no insulation distance and provides reliable personal safety protection.
Flexible high-voltage connection and power supply mode: The high-voltage connection can be used for both ring network and terminal connections, featuring flexible power supply mode and high reliability.
Excellent transformer performance: The transformer has excellent performance, with low loss, low noise, and low temperature rise. It also has strong overload capacity, as well as short-circuit and impact resistance.
Adaptable to low-voltage outgoing requirements: It can meet the requirements of various low-voltage outgoing circuits, and can be selected according to existing schemes or customized as required.
Two types of cable connections available: There are two options for cable connections: cable head plugs and 200A/600A elbow-type "T"-shaped fixed cable joints. A fully insulated zinc oxide arrester can be configured; the 200A cable head supports live plugging and serves as an isolating switch.
Product Characteristics
For ground-level utility and industrial distribution, product Characteristics is treated as a practical design and selection point rather than generic catalog wording.
The product features small size, a compact structure, and easy installation. 2. It can be used for both ring network and terminal applications, and provides reliable personal safety protection. 3. The product has low loss, low noise, and superior performance. 4. The cabinet adopts an anti-theft structure. 5. It also has a low temperature rise and strong overload capacity.
Basic Construction and Technical Requirements
For ground-level utility and industrial distribution, basic Construction and Technical Requirements is treated as a practical design and selection point rather than generic catalog wording.
● Foundation Bearing Capacity and Protection The foundation bearing capacity shall be not less than 100 kPa.
If the foundation is located in highlands, external drainage systems shall be provided around it.
The foundation shall be built with red brick cement mortar, and both inner and outer walls shall be plastered with 20mm-thick 1:2 cement mortar mixed with 3% waterproofing agent to enhance waterproofing.
The concrete foundation surface shall be flat, and after installation of the prefabricated substation, the surrounding foundation shall be sealed with cement.
● Structure and Embedded Parts.
The bottom of the cable chamber shall be slightly inclined toward the water collection pipe to prevent water accumulation.
Electrical and Mechanical Data
The table data is organized for quick rating comparison, project specification, and transformer selection.
S/N
Name
Unit
Technical Parameter
1
Rated Voltage
KV
10/0.4
2
High-voltage Side Rated Voltage
KV
10
3
Low-voltage Side Rated Voltage
KV
0.4
4
Maximum operating voltage (High voltage side)
KV
12
5
Rated Frequency
Hz
50
6
Rated Capacity
KVA
150-1600
7
High-voltage Switch Heat Stable Capacity
KA
20/26
8
Low-voltage Main Circuit Breaker Rated Short-circuit Breaking Capacity
KA
35
9
Low-voltage Distribution Circuit Breaker Rated Short-circuit Breaking Capacity
KA
35
10
High-voltage Load Switch Transfer Current
A
>1500
11
1 min Power Frequency Withstand Voltage
KV
35
12
Lightning Impulse Voltage
KV
75
13
Cooling Mode
Oil immersed self-cooling
14
High-voltage Backup Fuse Breaking Current
KA
50
15
Breaking Current of Plug-in Fuse
KA
2.5
16
Ambient Temperature
℃
35 ~ +40
17
Coil Allowable Temperature Rise
K
65
18
No-load Voltage Regulation
%
±5% or ±2 × 2.5%
19
Noise Level
DB
<50
20
Protection Grade of Box Shell
Not less than IP3X
Rated voltage(KV)
10
0.4
Transformer
Switch to ground and phase to phase
Between disconnectors
Power frequency withstand voltage (KV)
35
42
48
2.5
Peak value of impulse withstand voltage(KV)
75
75
85
–
Capacity KVA
Voltage KV
Join group label
No-load current %
No load loss W
Impedance voltage %
Load loss
High tension
Low pressure
S9
S10
S11
S9
S10
S11
160
10±5% or 2×2.5%
0.4
Dyn11 Yno
1.4
1.4
0.2
400
320
255
4.0
2200
200
1.3
1.3
0.2
480
380
305
2600
250
1.2
1.2
0.2
560
450
360
3050
315
1.1
1.1
0.2
670
530
425
3650
400
1.0
1.0
0.15
800
650
505
4300
500
1.0
1.0
0.15
960
750
605
5100
630
0.9
0.9
0.15
1200
910
755
6200
800
0.8
0.8
0.15
1400
1080
980
7500
1000
0.7
0.7
1700
1260
4.5
10300
1250
0.6
0.6
1950
12000
Item Name
Units
315A
630A
Rated voltage
KV
12
12
Maximum current
A
315
630
Rated frequency
Hz
50
50
Rated short-circuit closing current
KA
31.5
50
Rated short-time withstand current
KA
12.5
50
Rated short endurance time
S
2
2
Mechanical life
Second-rate
2000
2000
Lightning impulse test
Phase to phase
KV
75
75
Isolation fracture
85
85
1min power frequency withstand voltage
Phase to phase
KA
42
42
Isolation fracture
48
48
Rated peak withstand current
KV
31.5
50
Capacity
A
B
C
H
Weight KG
200kVA and below
1830
1420
820
1850
＜ 2800
250-400kVA
1830
1450
850
1980
3000-3300
500-630kVA
1830
1480
880
2070
3600-3950
800kVA
2200
1700
950
2170
4500
Capacity
A
B
C
H
Weight KG
315kVA
2560
1600
600
1000
3050
400kVA
2560
1600
600
1000
3270
500kVA
2560
1600
600
1000
3400
630kVA
2560
1600
600
1000
3900
800kVA
2760
1600
800
1000
4200
1000kVA
2760
1950
800
1000
4800
1250kVA
2910
1950
800
1000
5400
1600kVA
2200
1700
950
2170
4500
Product Detail Images
100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 1.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 2.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 3.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 4.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 5.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 6.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 7.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 8.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 9.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 10.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 11.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 12.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 13.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 14.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 15.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 16.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 17.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 18.100 kVA Pad-Mounted Distribution Transformer enclosure, bushing, and cable compartment detail 19.
