Locomotive Self-Propelled Power Supply Unit
The Locomotive Self-Propelled Power Supply Unit is designed to enable shunting and transfer operations within non-electrified areas of the section, allowing the locomotive to move on its own at a speed not exceeding 6 km/h. Additionally, it provides sufficient power to support the normal operation of the sunroof and other electrical needs during the driver’s daily activities.
Advantages of Locomotive Self-Propelled Power Supply Unit
- Compact and Lightweight Structure Design: Adopting a compact and lightweight structure design concept, through optimizing equipment layout and selecting lightweight and high – strength materials, the volume and weight of the power supply unit are minimized on the premise of ensuring its performance. This not only helps to improve the space utilization rate of the locomotive but also reduces the overall self – weight of the locomotive and energy consumption. For example, the power generation equipment, control system, and energy storage device are reasonably integrated, making the structure of the entire power supply unit more compact and facilitating installation and maintenance.
Features of Locomotive Self-Propelled Power Supply Unit
- High – efficiency and Stable Power Supply: The locomotive self – propelled power supply unit is equipped with high – performance power generation equipment and an advanced voltage and current stabilization control system, which can provide efficient and stable power supply for various electrical equipment of the locomotive. Whether the locomotive is in different operating conditions such as starting, accelerating, running at a constant speed, or braking, it can accurately adjust the output voltage and current to ensure stable power output.
Vehicle Auxiliary Power System-Video-DB2/3 | CR300BF/CR400BF
Vehicle Auxiliary Power System-Video-DB2/3 wiper device is CR300BF, CR400BF standard EMU supporting product produced for CRRC Tangshan Company and Changke Corporation. The wiper system is composed of the following components: a drive device, a scraper arm, a scraper frame, a scraper, a pump, a liquid level display switch, a junction box and a wiper switch. Among them, the core component of the wiper motor has been implemented domestically.
Tourist Train
The CRRC Zhuzhou 1435 series dual rail sightseeing car inherits the technological DNA of CRRC high-speed rail and is designed for in-depth sightseeing in scenic areas. The innovative double-decker structure features a panoramic window on the first floor for comfortable all-weather sightseeing and an open-top layout on the second floor for a 360° immersive natural experience.
Traction System
CHSR's CHSR™ CC750 air-cooled converter is a highly integrated traction and auxiliary "two-in-one" core equipment. It condenses key power conversion functions into a single compact enclosure, providing robust and stable power for intercity trains through standardized modular design, intelligent air cooling (IP65 protection), and mature and reliable components.
Bogie and Braking System
CRRC Braking Systems Co., Ltd.'s disc brake calipers use hydraulic or pneumatic-hydraulic conversion drive technology.They integrate automatic gap adjustment, modular caliper body, and three-point floating suspension design to ensure precise contact between brake pads and discs.
Track Body Components
RailMac provides railway solutions, focusing on one-stop Lince/Huanji wiper services (R&D, production, maintenance) plus rail air conditioning. It offers diverse wipers (DC110V/74V/24V, pneumatic) and developed China’s first IP-owned CRH3 EMU wiper, with products batch-loaded in CRH380/CR400BF/CR300BF.
Maintenance Equipment
RunWell is a high-tech enterprise specializing in the fields of rail transit and military industry. Its car lift machine products integrate German drive technology (such as the Demag three-in-one modular system) with intelligent control, supporting heavy-duty conditions of over 150 tons.
Railway Components
CRRC specializes in innovative environmental protection sanitation systems. Products like vacuum water - saving toilet modules and waterless ecological toilets, made in an orderly factory, are applied in railways, public facilities, and outdoor scenarios.
RailMac
Partnering with global leaders, RailMac offers superior railway equipment and solutions at competitive prices. It hit milestones like Thailand’s 2017 first local train, pioneered SEA new energy trains, and joined Russia’s high-speed rail project, boosting its railway industry presence.
General Specifications of Locomotive Self-Propelled Power Supply Unit
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Locomotive Accessories and Detection Devices Series Products
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Egypt | Marine
SinoMac 2027 Customer Interview Video: Since 2023, SinoMac has completed a series of interviews with multiple enterprises from different countries and regions. Most of the videos were shot at the customer companies and factories, and all the evaluations and feedback about SinoMac were collected, covering different industries in different countries and regions. We believe that this series of SinoMac customer interview videos can help all other customers have a deeper understanding of SinoMac. Our real customer interview cases can greatly help customers eliminate concerns and enhance their confidence in cooperating with SinoMac.
A promise is a promise. SinoMac has always kept its word. For customer feedback, it is 100% the true words of the customers. SinoMac, a company you can trust!
Indonesia | Pump
EMAC 2027 Customer Interview Video: Since 2023, EMAC has completed a series of interviews with multiple enterprises from different countries and regions. Most of the videos were shot at the customer companies and factories, and all the evaluations and feedback about EMAC were collected, covering different industries in different countries and regions. We believe that this series of EMAC customer interview videos can help all other customers have a deeper understanding of EMAC. Our real customer interview cases can greatly help customers eliminate concerns and enhance their confidence in cooperating with EMAC.
Fortescue Achieves True Zero Emissions: Battery-Electric Locomotives Enter Commissioning
Fortescue has started commissioning two battery-electric locomotives (supplied by Progress Rail) for its Pilbara iron ore rail network, a key step in its decarbonization drive. Each locomotive is equipped with a 14.5 MWh battery and features regenerative braking, reducing annual diesel consumption by about 1 million liters. Powered by renewable energy from the Pilbara Energy Interconnection program, combined with solar, energy storage projects and intelligent battery management systems, the move promotes true zero emissions in mining railways and supports the company’s goal of eliminating Scope 1 and 2 emissions from its Australian onshore iron ore operations by 2030.
Brake Control Valve
CRRC’s brake control valves cover EP valves and relay valves for diverse rail vehicles, boasting high-precision electro-pneumatic conversion & pressure control. With modular piston structure and electromagnetic control, they boost braking reliability and maintenance cycles, ensuring safe, efficient operation of high-speed trains, locomotives and urban rail transit.
Distribution Valve
CRRC’s distribution valves adopt self-developed piston O-ring sealing (instead of slide valves) for enhanced reliability and a 6-year maintenance cycle. With stage braking/relief, 10kPa high-precision pressure control and vibration resistance, they ensure safe operation for high-speed trains, locomotives and urban rail vehicles.
Disc Brake Caliper
CRRC’s disc brake calipers adopt hydraulic/pneumatic-hydraulic drive, with auto gap adjustment and modular floating structure for precise braking. Integrated drive-parking functions, 18x force amplification, harsh-environment resistance, fit high-speed trains, locomotives and urban rail vehicles.
Unit Brake Cylinder
CRRC Braking Systems’ unit brake cylinders adopt modular, compact design with ≥85% transmission efficiency and easy maintenance. Equipped with built-in auto gap adjustment, some have spring parking brake for safety. CRCC-certified, they fit high-speed locomotives, urban rail and heavy freight trains.
Bogie Components
CRRC Braking System’s core product series includes four key components, tailored for rail transit and compatible with diverse vehicles. Featuring modular design, precise control, and durability, they ensure safe, efficient rail operation.
Carbon Fiber Composites: A Revolutionary Breakthrough for Rail Transit Lightweight
Carbon fiber, known as the “King of New Materials,” is an advanced lightweight material with advantages such as low weight, high strength, fatigue resistance, and corrosion resistance. In the field of rail transit technology, lightweight construction is an important way for rail vehicles to achieve green and low – carbon development.
This will drive the upstream and downstream industries to achieve an annual output value of nearly one billion yuan, providing strong support for China’s green and low – carbon transformation of its rail transit system.
Intelligent Evolution of Rail Transit Power Systems and Revolutionary Whole-Life Cycle Maintenance
Globally, rail transit is undergoing a transformation towards greater efficiency and low-carbon operations. In this process, the intelligent reconstruction of power systems and the digital transformation of maintenance technologies have become key drivers of industrial upgrading. RailMac, as a provider of power technology solutions, is driving the evolution of traditional power chains towards an integrated “sensing – decision – action” architecture. It does this through system adaptation and scenario-based integration.
Analysis of Core Systems in Rail Transit Vehicles
The body serves as the foundation for transportation activities, with its design needing to balance strength, lightweight, and environmental adaptability. It must endure complex stresses from operation while cutting energy consumption via lightweight materials, and adapt to extreme temperatures, humidity, and corrosion across diverse operating environments…
Rail Transit Maintenance System and Technical Framework
Rail transit maintenance strictly follows a graded and categorized approach, with tailored cycles and processes based on equipment characteristics and operational needs. For core components like bogies and traction converters, it implements frequent condition-based monitoring and quarterly overhauls; for auxiliary systems such as vacuum toilets, it adopts semi-annual routine inspections and annual component replacements, ensuring targeted and efficient upkeep…
The Propulsion System of Rail Transit: Efficient Drive
The technological innovation of rail transit propulsion systems is essentially about balancing efficiency and sustainability. From permanent magnet motors to hydrogen applications, from energy recovery to intelligent control, every breakthrough reshapes the energy paradigm of rail transit. In the future, with the deep integration of green technologies and digitalization, rail transit will not only be the lifeline of cities but also a core carrier for a zero-carbon future.
SinoMac Makes Its Mark at Global Maritime Event—A Look Back at Marintec China 2025
Hailed as the “Olympics” of the global maritime industry, Marintec China 2025 took place from December 2 to 5, 2025, at the Shanghai New International Expo Centre. Centered on the theme “Innovation and Cooperation for Sustainable Maritime Development,” this edition showcased cutting-edge technologies, innovative achievements, and sustainable pathways across the global maritime sector. It attracted over 2,000 exhibiting companies and tens of thousands of professional visitors from more than 100 countries and regions, highlighting China’s pivotal influence and open-cooperative stance within the global maritime industry.
SinoMac’s Presence at the 2025 Kazakhstan International Mining, Exploration & Coal Processing Exhibition
As one of the most influential mining exhibitions in Central Asia, the Kazakhstan International Mining, Exploration and Coal Processing Exhibition (Mining Week) was grandly held in Karaganda, Kazakhstan from June 24 to 26, 2025. Focused on the entire mining process, this exhibition showcased a concentrated display of technological innovations, equipment upgrades and green solutions-catering to the industry’s full-chain demands and serving as a premier platform for global mining players to showcase technologies, exchange experience and explore partnerships.
Review of SeaMac 2025 Vietnam International Maritime Ship Exhibition:Deeply connecting with the cutting-edge of the global maritime industry
Recently, the highly anticipated 2025 Vietnam International Maritime and Shipbuilding Exhibition concluded successfully at the Adora Convention Center in Ho Chi Minh City. As Vietnam’s largest and most specialized event in shipbuilding and maritime technology, the exhibition gathered top shipbuilders, maritime service providers, and marine equipment manufacturers from around the world. SeaMac actively participated, comprehensively showcasing its innovative achievements and integrated capabilities in ship solutions and high-efficiency propulsion systems. The company engaged in extensive and in-depth exchanges with industry partners, achieving fruitful outcomes from its participation.
RailMac OCCT9D6IV541800X
Input Voltage：6300 V
Output Voltage：DC 950 V
Cooling Method：Air Cooling
RailMac OCCT9D6NF541800X
Input Voltage：815 V
Output Voltage：DC 950 V
Cooling Method：Forced Air Cooling
Train Charger/Station
RailMac OCCT series chargers offer 815V/6300V input, DC950V output and air/forced air cooling.
Coupler
The coupler buffer is a key component of railway vehicles or heavy transport equipment. Its function is to connect
vehicles, transmit traction/braking force, and buffer the impact force during operation.Transmit the traction force of the tractor to the subsequent carriages, and at the same time transmit the braking force in the opposite direction to achieve coordinated acceleration or deceleration.Springs, hydraulics or rubber elements are used to absorb the impact energy during vehicle starting, braking and collision, thus reducing structural damage. For molten iron tanks, buffering can reduce the risk of molten iron sloshing and prevent high-temperature liquid from overflowing.
Train Bogie
The bogie is the wheel axle assembly at the bottom of the vehicle. Bogie supports the weight of the vehicle body through multiple wheel sets and suspension systems to ensure the stability of the vehicle on straight and curved roads. At the same time, it allows the wheel sets to rotate independently, so that the vehicle can pass through curves flexibly and reduce the risk of derailment. The suspension system such as springs and dampers absorbs the vibration caused by uneven tracks to improve passenger comfort.
Lifting Jack
RailMac is a rail transit/military high-tech firm integrating German drive tech and intelligent control, supporting over 150-ton heavy-duty operations with patented stable, efficient maintenance solutions.
RailMac ZWH90-F Series (16-fan Configuration)
Rated Power: 18 W
Rated Speed: 1250 rpm
RailMac ZWH90-F Series (12-fan Configuration)
Rated Power: 18 W
Rated Speed: 1500 rpm
RailMac ZWH90-F (J9) Series
Rated Power: 18 – 25 W
Rated Speed: 1200 – 2000 rpm
Train Fan
RailMac ZWH90-F Series train fans offer 18-25W rated power, 1200-2000rpm speed, and 12/16-fan configurable options.
RailMac Emergency Power Supply Quick Connector
This Emergency Power Supply Quick Connector
adopts a strap spring structure for reliable
contact and low resistance. It features fast
installation, easy operation, and secure latching to prevent loosening, with IP68 protection when mated and touch protection when unmated.
RailMac 1000A DC Connector
This 1000A DC Connector integrates charging
confirmation, communication, and emergency
stop interfaces. Boasting excellent corrosion
resistance, it suits humid, salt-laden marine environments, enabling safe, high-power 1000A DC transmission with robust functionality and environmental adaptability.
RailMac 420A Power Connector
This 420A Power Connector excels in corrosion
resistance, fitting humid, salt-laden marine
environments. It has a mechanical lock to
prevent live plugging and IP67 protection, enabling safe, stable 420A high-power transmission in harsh conditions.
RailMac 250A DC Connector
This 250A DC Connector supports charging
confirmation, communication, and emergency
stop interfaces. With excellent corrosion
resistance,it is ideal for humid, salt-laden marine environments, delivering reliable 250A DC power transmission with robust environmental adaptability and functional versatility.
RailMac 250A Low-Voltage Connector
This 250A Low-Voltage Connector boasts strong
corrosion resistance, suiting humid, salt-laden
marine environments. It features a mechanical
lock to prevent live plugging and IP67 protection, delivering safe, reliable 250A low-voltage current transmission in harsh conditions.
RailMac Low-Voltage Smart Shore Power Pile
This Low-Voltage Smart Shore Power Pile uploads
operational data via a network module for remote
monitoring and querying. It offers metering
/billing, fault alerts, plus protection functions (connection confirmation, emergency stop, short-circuit/lightning protection) for safe, intelligent port power supply.
RailMac Transfer Cable
This Transfer Cable enables quick connection
between ships and port shore power equipment
with mismatched interfaces. One plug links to
the port’s output, while the mobile socket on the other end adapts to various ship-side interface specifications, streamlining shore power transitions.
RailMac High-voltage connector
This high-voltage connector excels in corrosion
resistance, suiting humid, salt-laden marine
environments.It features a mechanical lock for
live-plug protection and IP67 sealing, ensuring safe, reliable operation in harsh conditions while supporting high-voltage power transmission.
RailMac Control Connector
This control connector (per GB/T 25022.3-2023)
integrates network/control signals, with
continuous shielding. It features multi-guide
structures for “blind mating”, stable axial contact positioning (ideal for frequent plugging), and 54 contacts + 3 ports, ensuring reliable rail transit communication.
RailMac Power Connector
This power connector, ideal for 160/200km/h
electric multiple units, features IP67 sealing,
compact labyrinth insulation, and multi-layer
anti-misinsertion. Its stable contact positioning ensures safe power transfer, complying with GB/T 25023-2010, TB/T 3213-2009, and GB/T 21563-2018 standards.
RailMac M12 Connector
This M12 Connector meets IEC standards,
boasting high signal integrity and 360°
circumferential shielding for strong
anti-interference. It features low contact resistance, long mechanical life, and high voltage tolerance. Simple to assemble, it serves industrial automation, plus measurement, robotics, aerospace, and alternative energy sectors.
RailMac Rectangular Medium-Pressure Connector
This Rectangular Medium-Pressure Connector
features an aluminum alloy shell,flame-retardant
insulators, and a detachable rear cover. With
dual anti-misinsertion structures and IP67+ sealing, it ensures reliable bolted connections. The corrosion-resistant shell and maintainable contacts suit harsh industrial environments.
RailMac JSD Series Modular Terminal Blocks
The JSD Series (JSD-70/JSD-150) modular
terminal blocks—comprising bases, modules,
baffles,and fasteners—support custom
combinations.JSD-70 handles ≤70mm² cables; JSD-150 ≤150mm². Made of flame-retardant material (excellent impact resistance), they enable high-voltage/current transmission via crimp terminals, suiting diverse cabinet applications.
RailMac 102-Core Equipment Connector
This 102-Core Equipment Connector features
flame-retardant insulators, contacts, and
a shell-less integrated frame for easy installation.
It enables power/control/signal transmission for air-con, PIS, and driver’s cabinets. Boasting diverse specs (12/17-core 10A, etc.), it supports flexible module combinations to fit varied wiring needs.
RailMac 64-Core Full Module Equipment Connector
The 64-Core Full Module Equipment Connector
consists of flame-retardant insulators, contacts,
springs and fasteners. It suits air conditioning,
PIS and driver’s cab control cabinets in transit systems. Its integrated modular design ensures straightforward installation, enabling reliable connections for diverse on-board equipment.
RailMac 72-Core Equipment Connector
This 72-Core Equipment Connector for urban rail
transit features flame-retardant insulators,
contacts,integrated frame and fasteners. Its
modular design supports power, control and signal transmission for air conditioning cabinets, PIS cabinets and driver’s cab control cabinets. With multiple core configurations (12/17-core 10A, 6/8-core 16A, 2/3-core 40A), it allows flexible combinations to meet diverse wiring needs, ensuring easy installation.
RailMac D-Sub (MVB) Connector
This D-Sub (MVB) Connector complies
with IEC61375-1 standard, delivering high signal
integrity and excellent performance. It features
360° circumferential shielding for strong anti-interference, supports MVB communication protocol, and comes in male (pin) and female (socket) versions. With 9-pin D-SUB design, it enables fast, stable signal transmission for vehicle bus control systems, easy to install as terminal or repeater.
RailMac Motor Connector
RailMac’s motor connectors are tailored for rail
vehicles and other transportation applications.
Boasting a highly reliable structure, select models
come with a unique anti-disconnection design, which effectively resists vibration and guarantees stable signal transmission in transportation scenarios.
RailMac Hook-and-loop Connector
RailMac’s hook buffer connector is a core electrical
component for subway semi-automatic couplers.
With an innovative symmetrical floating design
and floating insulator plate assembly, it offsets coupler gaps, avoids contact wear and signal interruptions, and enhances reliability.
RailMac Rectangular Network Connector
RailMac’s rectangular network connector features
a high-density design. The company holds a
patent for a specialized auxiliary mating fixture
that addresses the challenge of high insertion and extraction forces in multi-core connectors, enabling fast and uniform mating while preventing damage and enhancing reliability. The product is widely used in transportation fields such as railways and aerospace.
RailMac Rectangular Control Connector
RailMac’s rectangular control connector caters to
industrial automation and rail transit, enabling
reliable signal/power transmission. Boasting a
patented auxiliary mating design, modular structure, anti-misinsertion, and blind mating tech, it excels in harsh environments, boosting installation efficiency and reliability while cutting maintenance costs.
RailMac Intermediate connector
RailMac’s intermediate connector is designed for
power and signal transmission at the ends of rail
vehicles. Its core lies in the innovative symmetric
floating structure, which effectively absorbs displacement caused by coupler gaps, completely eliminating harmful sliding wear between contacts, ensuring continuous and stable signals. The product integrates multiple guidance and high-reliability blind mating technology, supporting fast and accurate docking in complex wiring environments.
RailMacHigh-voltage connectors
Rated Voltage: DC 1500 / 2000 V
Rated Current: DC 100 – 350 A
Impulse Voltage Withstand Test: ＞DC12.3KV
Protection Class: IP67 (Mated condition)
Power Connector
RailMac Power Connector adapts to multiple scenarios with high protection, compliance, stable transmission, wide specs, and reliable modular connections.
