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In the field of power equipment, the reliability of generators directly determines the operational efficiency of power systems. The 28-year strategic partnership between BaiFa Power and Cummins is built upon a shared pursuit of excellence in quality. As a leading enterprise in power solutions, BaiFa has always adhered to a "customer-centric" philosophy, meticulously selecting premium power generation equipment worldwide. With its technological leadership, stringent international certifications, and global service network, STAMFORD generators have become BaiFa's core strategic product, delivering tens of thousands of high-quality power solutions to global customers.
STAMFORD® originated in 1904 in Stamford, England. STAMFORD® is now a Cummins-owned brand that operates independently as STAMFORD | AvK, specializing in delivering versatile alternators for the power generation industry.
The STAMFORD® S-series generators, ranging from the compact S0 to the high-performance S9, feature innovative engineering designs. Incorporating wire-wound technology and the patented CoreCooling™ system, they achieve comprehensive breakthroughs in power density, thermal management, and integration efficiency. With an extensive power output range (7.5-5,600kVA), these generators are ideally suited for demanding applications across marine, oil & gas, UPS, telecommunications, construction, and other critical sectors.
| S-Series | kVA Range | Frequency | Voltage Range | Poles | |
| S0 | S0L1 | 7.5-36 | 50/60Hz | 380-600 | 4 |
| S0L2 | |||||
| S0L2M | |||||
| S1 | S1L2 | 34-75 | |||
| S1L2M | |||||
| S4 | S4L1D | 210-560 | 380-690 | ||
| S4L1M | |||||
| S4L1S | |||||
| S5 | S5L1D | 450-937 | |||
| S5L1M | |||||
| S5L1S | |||||
| S6 | S6L1D | 810-1695 | |||
| S6L1M | |||||
| S7 | S7L1D | 1425-2644 | |||
| S7H1D | |||||
| S7L1M | |||||
|
S9 |
S9L1D | 2150-5600 | |||
| S9H1D | |||||
| S9M1D | |||||
S-Series Generator Key Features:
1.S0/S1 Compact Range (7.5-63kVA)
20% faster installation efficiency
Modular base design for flexible mounting
Ultra-compact footprint (30% smaller than industry standard)
Optional auxiliary winding for enhanced starting performance
2.S4/S5/S6 Mid-Range(450-750kVA)
Optimize the core design to increase power density
CoreCooling™ High-Efficiency Heat Dissipation System
S6 supports multi-band output.(400-480kVA)
3.S7/S9 Industrial Range(1425-5600kVA)
S7 Water-Cooled Design Supports 110% Overload Capacity
3x Short-Circuit Withstand Capability
S9 Covers the Full Voltage Spectrum from Low to High Voltage
Class H Insulation System Ensures High-Temperature Stability
| Comparison ltems | STAMFORD ALTERANTOR | "ECONOMIC" alternator |
| Winding material | Adopts high - purity copper material, which has good electrical conductivity, low resistance, and low power consumption. | May use low - purity copper aluminum wire, or copper-clad aluminum wire as a substitute. It has high resistance and serious heating. The main generator is prone to overheating, and a larger capacity is required for use. Moreover, it cannot switch the winding mode or switch to low - voltage use. |
| Silicon Steel Sheets | Selects high -quality silicon steel sheets, with low iron loss, good magnetic conductivity, and high energy conversion efficiency. | Uses silicon steel sheets with non-standard thickness and poor quality, or even recycled waste ones. lt has high iron loss low efficiency, and the main generator is prone to overheating. Increasing the capacity also fails to achieve high efficiency. |
| Other Materials | Insulation materials, bearings fans and other components adopt high-quality materials that meet standards, with good safety, stability, and heat dissipation. | Uses inferior insulation materials that are prone to aging and breakdown. The bearings have low precision and poor wear resistance, and the fans have poor quality with potential to derate power output. |
| PMG | With STAMFORD OPTIONAL (S6 above standard) Permanent magnetic generator-PMG will increase 3 times short circuit ability and transient impact capability. | No testing data and no specified in it’s PMG spec sheet. |
| Design and R & D | Carefully designed and developed, with a reasonable structure. lt is optimized in terms of efficiency and stability, and can switch the winding mode, adapt to low - voltage, and allow multiple units to be paralleled for use | Lacks a professional team, simply imitates, and has no optimization. |
| Production Process | The processes of iron core lamination, winding assembly are strict, with stable and reliable product quality, and complex functions can be achieved. | The production process is rough The quality of iron core lamination, low quality winding assembly. The operation has large vibration and high noise, and the performance is unstable. The main generator is prone to overheating and relies on increasing the capacity to maintain operation. It cannot achieve functions such as winding switching to low-voltage use, and multi-unit paralleling operation. |
| Brand Value | A well - known brand with high market popularity and reputation. The brand value is reflected in the product price, and the functions are complete. | The brand influence is small. There is little investment in brand building and promotion, and the product quality is difficult to be trustworthy. The lack of functions is difficult to be recognized by users. |
| PRE & After -sales Service | Sophisticated engineer team sizing alternator to suit for project application and ambient. To make sure quality and redundancy. Provides GLOBAL comprehensive after -sales service, including free maintenance during the warranty period and long - term technical support, and can solve complex functional problems. | The after - sales service is incomplete, with a short warranty period and high repair costs. Product problems are difficult tobe effectively solved. when the main generator overheats or malfunctions frequently, timely support cannot be obtained, and functional defects cannot be resolved. |
| CERTIFICATION AND TYPE APPROVAL | CE, UL, CSA, RL and etc. IEC standard. | Not available. |
| Design for variety of site condition. | Stamford alternator standard based on 40 degree ambient continuous rating.(higher ambient Baifa/Stamford team will resize after derating). Usually adopts more robust and durable metal materials, etc. in the design, with better durability and anti-environmental interference ability. lt can operate stably in harsh environments such as high temperature, humidity, and dust ensuring the long -term stable operation of the power generation system. | The relevant advantages are not mentioned. lt is speculated that its durability and stability may be poor in harsh environments. |
The long-term collaboration between Baifa and Stanford is not just built on technological trust, but also a shared commitment to the principle that "reliability equals productivity." Moving forward, both parties will continue to drive innovation, delivering zero-worry power solutions for global customers.
Stanford® Authorized Tier-1 OEM
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