Single-phase pad-mounted transformers with protective functions
Key attributes
| Brand | Vziman |
| Model NO. | Single-phase pad-mounted transformers with protective functions |
| Rated frequency | 50/60Hz |
| Primary voltage | 2400-19920 V |
| Secondary voltage | 120-600 V |
| Capacity range | 10-167 kVA |
| Series | ZSG |
Product descriptions from the supplier
Descripton：
The Completely Self-Protection (CSP) single-phase pad-mounted transformer is designed with the core objective of achieving excellent performance. It integrates a directly connected primary surge arrester, a MagneX arc extinguishing chamber, or a secondary circuit breaker with a built-in primary voltage fuse. There is no need to install additional independent protective equipment, which significantly reduces the installation cost.
The power range of this series of transformers covers 10 - 75 kVA. When equipped with a MagneX arc extinguishing chamber, the power range can be expanded to 10 - 167 kVA, and its performance fully meets or even exceeds relevant standards such as ANSI and NEMA.
In addition, the CSP transformer supports two types of filling media. It can be filled with standard electrical-grade mineral insulating oil or FR3 liquid with excellent fire resistance, flexibly adapting to different usage scenarios.
Features：
Equipped with an internal overcurrent device and a surge arrester, it can achieve efficient overvoltage protection without the need for external independent protective components. For secondary faults and overloads, it can provide dual reliable protection through a secondary circuit breaker with weak links or an optional MagneX arc extinguishing chamber.
It supports the free choice of two filling media: FR3 fireproof insulating oil, which greatly enhances the fire safety level; or standard electrical-grade mineral oil to meet regular usage requirements. The product performance comprehensively surpasses industry standards and performs excellently in terms of ANSI specifications, NEMA standards, and DOE energy efficiency requirements.
The core and coils are deeply optimized in design. Aiming to achieve high reliability and a low failure rate, it offers two materials, grain-oriented steel and amorphous steel, to adapt to different performance needs. Both the high-voltage and low-voltage bushing terminals are tinned, making them compatible with aluminum and copper conductors to ensure stable and reliable electrical connections.
The exterior design takes into account both functionality and aesthetics, offering two style options: the MaxiShrub style equipped with an ANSI Type-1 front panel, or the Shrubline style with an ANSI Type-2 front panel. Both adopt a low-profile design and can better blend into the surrounding environment.
Technical Parameters：
Specifications：
Meet or exceeds ANSI, NEMA and DOE2016 standards
IEEE standards C57.12.00, C57.12.38, C57.12.28, C57.12.35, C57.12.90, C57. 91 and C57.154
NEMA standards, NEMA TR 1 (R2000)
Department of Energy Efficiency Standard, 10 CFR Part 431
Tank coating exceeds IEEE Std C57.12.28-2005 and C57.12.29-2005 standards (stainless steel units only)
Full compliance with IEEE Std C57.12.28-2005 standard enclosure integrity requirements
FR3 fluid or electrical grade mineral oil
Cores and coils designed for high reliability and low field failure rates: Available in grain-oriented electrical or amorphous steel
The transformer shall be designed in accordance with this specification and shall have an Average Winding Rise (AWR) of one of the following:
55 °C, 55/65 °C, 65 °C
The applicable AWR rating shall be specified on the inquiry
The transformer shall be designed in accordance with this specification and shall have one of the following kVA ratings:
10, 15, 25, 37.5, 50, 75, 100, 167
The applicable kVA rating shall be specified on the inquiry
Quality System ISO 9001 certified
Related Products
-
High Performance 100kVA 250kVA Combined Single Phase Cooper Pad Mounted Transformer
-
15kVA Single Phase Pad Mounted Transformer
-
800KVA- 10KV Pad mounted transformer
-
45-12000 kVA Three-phase pad-mounted transformers
-
45-12000 kVA Three-phase pad-mounted transformer
-
10-167 kVA single-phase pad-mounted transformer
-
35kV single-phase pad-mounted transformer
Related Knowledges
-
Faults and Handling of Single-phase Grounding in 10kV Distribution LinesCharacteristics and Detection Devices for Single-Phase Ground Faults1. Characteristics of Single-Phase Ground FaultsCentral Alarm Signals:The warning bell rings, and the indicator lamp labeled “Ground Fault on [X] kV Bus Section [Y]” illuminates. In systems with a Petersen coil (arc suppression coil) grounding the neutral point, the “Petersen Coil Operated” indicator also lights up.Insulation Monitoring Voltmeter Indications:The voltage of the faulted phase decreases (in01/30/2026 -
Neutral point grounding operation mode for 110kV～220kV power grid transformersThe arrangement of neutral point grounding operation modes for 110kV～220kV power grid transformers shall meet the insulation withstand requirements of transformer neutral points, and shall also strive to keep the zero-sequence impedance of substations basically unchanged, while ensuring that the zero-sequence comprehensive impedance at any short-circuit point in the system does not exceed three times the positive-sequence comprehensive impedance.For 220kV and 110kV transformers in new constructi01/29/2026 -
Why Do Substations Use Stones, Gravel, Pebbles, and Crushed Rock?Why Do Substations Use Stones, Gravel, Pebbles, and Crushed Rock?In substations, equipment such as power and distribution transformers, transmission lines, voltage transformers, current transformers, and disconnect switches all require grounding. Beyond grounding, we will now explore in depth why gravel and crushed stone are commonly used in substations. Though they appear ordinary, these stones play a critical safety and functional role.In substation grounding design—especially when multiple gr01/29/2026 -
Why Must a Transformer Core Be Grounded at Only One Point? Isn't Multi-Point Grounding More Reliable?Why Does the Transformer Core Need to Be Grounded?During operation, the transformer core, along with the metal structures, parts, and components that fix the core and windings, are all situated in a strong electric field. Under the influence of this electric field, they acquire a relatively high potential with respect to ground. If the core is not grounded, a potential difference will exist between the core and the grounded clamping structures and tank, which may lead to intermittent discharge.I01/29/2026 -
Understanding Transformer Neutral GroundingI. What is a Neutral Point?In transformers and generators, the neutral point is a specific point in the winding where the absolute voltage between this point and each external terminal is equal. In the diagram below, pointOrepresents the neutral point.II. Why Does the Neutral Point Need Grounding?The electrical connection method between the neutral point and earth in a three-phase AC power system is called theneutral grounding method. This grounding method directly affects:The safety, reliabilit01/29/2026 -
What’s the Difference Between Rectifier Transformers and Power Transformers?What is a Rectifier Transformer?"Power conversion" is a general term encompassing rectification, inversion, and frequency conversion, with rectification being the most widely used among them. Rectifier equipment converts input AC power into DC output through rectification and filtering. A rectifier transformer serves as the power supply transformer for such rectifier equipment. In industrial applications, most DC power supplies are obtained by combining a rectifier transformer with rectifier equ01/29/2026
Related Solutions
-
Choosing Vizman Distribution Transformers: Innovative Customization to Meet Diverse Power NeedsDistribution transformers are the heart of local electricity distribution systems. They step down voltage, enabling safe and efficient power supply to homes and businesses.At Vizman Electric Power Technology Co., Ltd., we understand the critical role of distribution transformers in the energy ecosystem. That's why we specialize in manufacturing high-quality distribution transformers, providing tailored solutions to meet diverse energy needs.1.Solutions Offered by Vizman Electric Power Technology04/16/2025 -
SF6 Circuit Breaker Solutions in High-Voltage Power Systems: A Case Study of VZIMAN Company1. Challenges in High-Voltage Power Systems1.1 High-voltage power systems, as the core of power transmission, face critical challenges: Equipment Performance Limits: With increasing voltage levels (e.g., 500kV and above), traditional circuit breakers struggle to meet high breaking capacities (over 40kA) and rapid insulation recovery requirements. Overvoltage Risks: Switching capacitive loads (e.g., capacitor banks) may cause reignition, leading to dangerous overvoltages. Poor Environmental Adapt05/13/2025 -
VZIMAN Company SF6 Circuit Breaker Solutions for Renewable Energy Grid Integration1. Current Challenges in Renewable Energy Grid Integration1.1 Grid Frequency Fluctuations and Stability IssuesThe intermittency and variability of renewable energy sources (e.g., wind and solar) lead to frequent grid frequency changes. Traditional circuit breakers struggle to respond rapidly to such dynamic loads, potentially causing equipment damage or regional blackouts. For instance, during sudden drops in wind power or abrupt solar output fluctuations, the grid must isolate faults within mil05/13/2025
