As modern urban rail transit, metro, light rail, tram, and electric locomotive systems continue to develop toward higher intelligence and automation, onboard electrical systems demand increasingly stable and highly reliable auxiliary power supplies.
In most railway traction applications, the primary DC bus typically uses 600VDC or 750VDC overhead catenary power. While this high-voltage DC power is suitable for traction motors and braking systems, critical onboard subsystems require a stable 110VDC auxiliary power supply.
These systems include:
Train Control and Management System (TCMS)
Passenger Information System (PIS)
onboard surveillance systems
driver cabin instrumentation
door control systems
lighting controllers
signal communication equipment
data acquisition modules
sensors and safety systems
To safely convert high-voltage traction power into stable low-voltage control power, a high-power isolated DC-DC converter is essential.
The MDI1000-600S110 from Mingzinc Technology is a 1000W 600V to 110V isolated waterproof DC-DC power module, specifically engineered for railway and rail transit power conversion environments.
Its fully sealed aluminum alloy housing, high-voltage isolation design, IP65 protection, and excellent EMI resistance make it ideal for demanding railway onboard applications.
Why Railway Systems Need 600V / 750V to 110V DC-DC Power Conversion
Railway traction systems commonly operate with:
600VDC / 750VDC traction bus → 110VDC auxiliary systems
However, high-voltage traction lines often experience:
voltage fluctuations
surge transients
regenerative braking spikes
EMI noise from motors
vibration shock
harsh temperature changes
Without proper isolated conversion, these disturbances may cause:
TCMS faults
communication failures
system reboot
signal interruption
equipment damage
Therefore, the standard solution is to use a:
600V to 110V isolated DC-DC converter module
to ensure safe, stable, and interference-resistant auxiliary power.
Typical Railway Applications of MDI1000-600S110
The MDI1000-600S110 is widely used in:
Metro & Light Rail Systems
Converts traction DC bus power into stable 110VDC for:
TCMS
PIS displays
CCTV systems
driver console
door controllers
HVAC control units
Electric Locomotives & Rail Engineering Vehicles
Provides isolated auxiliary power for:
control electronics
signal units
communication systems
instrumentation modules
Trackside Signal & Communication Equipment
Supplies stable 110VDC to:
signal control cabinets
communication repeaters
monitoring systems
Core Electrical Specifications
| Parameter | Specification |
|---|---|
| Model | MDI1000-600S110 |
| Rated Power | 1000W |
| Input Voltage | 600VDC |
| Input Range | 400–800VDC |
| Output Voltage | 110VDC |
| Output Current | 9.09A |
| Protection Level | IP65 |
| Cooling | Natural cooling |
| Housing | Fully sealed aluminum alloy |
| Dimensions | 240 × 182 × 81 mm |
| Safety Standard | UL1950 / IEC950 |
Optional versions available:
input voltage: 18V–800V
power range: 600W–1000W
single / multi-output customization
Key Technical Advantages
Wide Input Voltage Range for Railway Power Fluctuation
Supports 400–800VDC wide input, fully compatible with:
600VDC rail systems
750VDC rail systems
voltage drop
regenerative spikes
cable losses
This ensures stable 110VDC output under dynamic rail operating conditions.
High Isolation for Maximum Equipment Safety
The module adopts high-voltage electrical isolation between input and output, effectively suppressing:
surge interference
voltage spikes
common-mode noise
electromagnetic disturbance
This protects sensitive train control electronics.
Excellent Thermal Performance
The fully sealed aluminum housing with cooling fins provides:
excellent heat dissipation
fanless natural cooling
long-term full-load stability
Suitable for:
electrical cabinets
vehicle chassis installation
compact enclosed spaces
Low Ripple and Low Noise Output
Built-in wide-band noise filtering helps ensure clean power for:
communication systems
control processors
signal modules
onboard displays
This significantly improves system stability.
Comprehensive Protection Features
The MDI1000-600S110 includes:
input undervoltage protection
input overvoltage protection
overtemperature protection
output overcurrent protection
output short circuit protection
These protection mechanisms maximize equipment lifespan and operational safety.
IP65 Waterproof and Dustproof Design
Railway environments are extremely harsh, often involving:
high humidity
metal dust
vibration shock
oil mist
outdoor exposure
With IP65 protection and full potting encapsulation, this converter is suitable for:
roof-mounted systems
undercarriage installations
trackside cabinets
outdoor rail equipment
Flexible Custom Power Solutions
Mingzinc Technology provides extensive customization options:
18V–800V custom input
600W–1000W custom power
multi-output versions
special mounting dimensions
reinforced EMI/EMC design
OEM / ODM service available.
About Guangdong Mingzinc Technology Co., Ltd.
Guangdong Mingzinc Technology Co., Ltd. specializes in:
railway power supplies
industrial DC-DC converters
high-voltage isolated power modules
new energy power solutions
With strong R&D capabilities and strict quality control, our products are widely used in:
rail transit
industrial automation
renewable energy
communication equipment
smart manufacturing
Get the MDI1000-600S110 Datasheet
If you are looking for a 600V / 750V to 110V 1000W isolated waterproof DC-DC converter for railway traction systems, metro trains, or electric locomotives, contact Mingzinc engineers today for datasheets and technical support.
