Auxiliary Power Supply System
Product Portfolio
Intelligent Integrated ACDC Auxiliary Power Supply System
Technical Specifications:
- AC Input
Rated Input Voltage: 380Vac ±15%, 220Vac ±15%
Grid Frequency: 50Hz ±10 - DC Output
DC Operating Voltage: 220Vdc, 110Vdc
DC/DC Output Voltage: 48Vdc, 24Vdc - UPS / Inverter Output
AC Output Voltage: 380Vac, 220Vac
The Intelligent Integrated Auxiliary Power Supply System is a next-generation solution developed for smart substations and digital power systems. Centered on the DC operating power system, it integrates AC auxiliary power, DC operating power, UPS (Uninterruptible Power Supply), inverter power (INV), and telecommunication power supply into a unified platform with shared battery banks and centralized monitoring.
The system supports IEC 61850 digital communication with upper-level monitoring systems, enabling seamless integration into digital substations. With flexible configuration, modular expansion, and intelligent communication, it meets the requirements of unattended substations, networked power management, and online full-parameter monitoring.
High-Frequency Switched DC Power Supply Cabinet
Technical Specifications:
- 1.AC input voltage: 380 ±15% Vac; 220 ±15% Vac
- 2.Grid frequency: 50 ±10% Hz
- 3.DC output voltage: 220 Vdc, 110 Vdc
- 4.DC output current: Rated charging current 10A to 600A
- 5.Charging current adjustment range: 20% to 100% of rated value
- 6.Voltage regulation accuracy of charging unit: ≤±0.5%
- 7.DC output ripple factor: ≤0.3%
- 8.Current-sharing imbalance of rectifier modules: ≤±3%
- 9.Full-load efficiency of charging unit: >92%
- 10.Power factor of charging unit: >0.94
- 11.Acoustic noise: ≤55 dB
- 12.MTBF: ≥100,000 hours
- 13.Equipment dimensions: 2260 × 800 × 600 （mm）
This is a new-generation DC auxiliary power supply system featuring digital control, protection, measurement, and management. It integrates insulation monitoring, battery management, ground fault detection, SCR voltage regulation, and central signaling in a compact all-in-one design.
Designed for power plants, substations, and intelligent power distribution systems, it supports remote monitoring and communication and can be seamlessly integrated into SCADA and power automation systems via RS-232/485 and Ethernet interfaces.
Wall-mounted DC Power Supply Panel
Technical Specifications:
- Voltage: 220 V ±20%
- PT supply voltage: 100 V ±10%
- Grid frequency: 50 Hz ±10%
- Power factor: ≥0.85
- Output voltage range: 90 V–140 V continuously adjustable (110 V system), 180 V–280 V continuously adjustable (220 V system)
- Voltage regulation accuracy: ≤±0.5%
- Current regulation accuracy: ≤±0.5%
- Ripple factor: ≤±0.1%
- Current-sharing imbalance: ≤±5%
- Efficiency: >90%
- Output overvoltage protection: 280 V ±2 V (220 V system),140 V ±2 V (110 V system)
- Digital input: one channel each for switch trip and insulation fault (NO)
- Digital output: system fault (1 NO + 1 NC)
- Insulation strength: 2 kVAC applied between input-to-ground, output-to-ground, and input-to-output for 1 minute with no flashover or arcing
- Operating ambient humidity: ≤90%
- Operating temperature: –10°C to 45°C
- Audible noise: ≤55 dB
- Structural type: cabinet-mounted, wall-mounted
- Dimensions: 680 × 560 × 265 （mm）
The wall-mounted DC power supply system is designed for small-capacity applications, making it ideal for compact switching stations and small user substations. Featuring an integrated design, the system combines rectifier modules, monitoring unit, SCR step-down circuit, DC distribution, and battery cabinet into a compact structure, allowing independent operation with minimal installation space.
The system is equipped with an LCD-based monitoring module that provides comprehensive system supervision and intelligent battery management. It supports remote monitoring interfaces, RS-232 communication, and RTU/CDT protocols, enabling easy integration into power automation and SCADA systems.
Embedded Distributed DC Power Supply
Technical Specifications:
- AC Input Voltage: 220V AC ±20%
- Grid Frequency: 50Hz ±5%
- Minimum Power Requirement: ≥150VA per unit
- DC Output Voltage Options: 220VDC / 110VDC / 48VDC / 24VDC
- DC Output Power Options: 400W / 800W / 1200W
- Voltage Regulation Accuracy: ≤ ±0.5%
- Internal Power Consumption: ≤8W
- Local Display: Digital display for operating status and alarms
- Remote Monitoring Interfaces: Dry contacts, RS-232 / RS-485
- Operating Temperature: −15°C to +45°C
- Relative Humidity: ≤90% RH (non-condensing)
- Installation Environment: Free of conductive dust, corrosive gases, and heavy condensation
- Installation Type: Embedded / panel-mounted
The Distributed DC Power Supply is a compact embedded DC operating power solution designed for distributed installation in switchgear and control cabinets. It provides stable and reliable DC power for circuit breakers, load switches, and secondary protection and control equipment.
Using high-frequency switching technology and DSP digital control, the system delivers high efficiency, precise voltage regulation, and intelligent monitoring. Its distributed architecture reduces wiring complexity, improves reliability, and makes it ideal for modern substations, intelligent power distribution systems, and retrofit projects.
Central Signal Panel
Technical Specifications:
- Input Signal Voltage Range: DC 5V – DC 250V
- Operating Power Supply Voltage: 85 – 320 VDC
- Power Consumption: ≤ 60 W
- Signal Resolution: 10 ms
- Single-Panel Signal Capacity: 1 – 128 channels
- Operating Altitude: ≤ 2000 m
- Operating Temperature: −10°C to +45°C
- Relative Humidity: ≤ 90% RH (non-condensing)
- Cabinet Dimensions (H × W × D): 2260 × 800 × 600 mm
The Central Signal Panel is designed for substations, power plants, industrial facilities, electrified railways, and high-rise buildings. It is used for centralized collection, processing, display, and alarm indication of operational, warning, and fault signals from electrical systems.
The panel provides audible and visual alarm functions, supports flexible signal logic configuration, and enables clear indication of system operating status and abnormal conditions. With integrated communication interfaces, it can be connected to upper-level monitoring systems to support remote monitoring and “four-remote” functions, making it suitable for modern automated and unattended power systems.
Smart AC Power Distribution Panel
Technical Specifications:
- AC Input Voltage: 380V AC ±15% / 220V AC ±15%
- AC Input Circuits: Dual or three incoming feeders
- Grid Frequency: 50Hz ±5%
- Output Voltage: 380V AC / 220V AC
- Output Current Range: 100A – 2000A
- Operating Altitude: ≤ 2000 m
- Operating Temperature: −10°C to +45°C
- Relative Humidity: ≤ 90% RH (non-condensing)
- Acoustic Noise Level: ≤ 55 dB
- MTBF: ≥ 100,000 hours
- Cabinet Dimensions (H × W × D): 2260 × 800 × 600 mm
The Smart AC Power Distribution Panel is designed for centralized monitoring, measurement, and management of AC power distribution systems. It integrates power monitoring modules, comprehensive measurement units, and branch circuit monitoring modules to provide real-time supervision of incoming power and outgoing feeder circuits.
The system uses digital control technology and a centralized display to monitor AC operating status, including voltage, current, power, energy, and circuit conditions. It supports fault detection, alarm indication, and remote centralized monitoring, making it suitable for power utilities, communication systems, transportation infrastructure, and defense-related facilities.
Intelligent DC Power Supply System
Technical Specifications:
- AC Input Voltage: 380V AC ±15% / 220V AC ±15%
- Grid Frequency: 50Hz ±10%
- DC Output Voltage: 48V DC / 24V DC
- DC Output Current Range: 10A – 600A
- Charging Current Adjustment Range: 20% – 100% of rated value
- Charging Voltage Regulation Accuracy: ≤ ±0.5%
- DC Output Ripple Factor: ≤ 0.3%
- Rectifier Module Current Sharing Accuracy: ≤ ±3%
- Full-Load Efficiency: ≥ 92%
- Power Factor: ≥ 0.94
- Acoustic Noise Level: ≤ 55 dB
- MTBF: ≥ 100,000 hours
- Cabinet Dimensions (H × W × D): 2260 × 800 × 600 mm
The Intelligent DC Power Supply System is a high-performance, high-reliability switching DC power system designed in accordance with power industry standards and modern application requirements. It is engineered to provide large-capacity, stable DC power for critical applications requiring continuous and reliable operation.
The system is widely used in telecommunications networks, power utilities, water conservancy projects, railways, and other industrial fields where high-current DC power is required. By adopting modular high-frequency switching rectifier technology and digital control, it delivers high efficiency, excellent power quality, and flexible system scalability.
With comprehensive monitoring, intelligent battery management, and multiple communication interfaces, the system supports remote monitoring, unattended operation, and centralized management, making it suitable for modern intelligent power supply infrastructures.
Motor-type EPS
Technical Specifications:
- AC Input Voltage: 380V AC ±15% / 220V AC ±15%
- AC Input Circuits: Dual or three incoming feeders
- Grid Frequency: 50Hz ±5%
- Output Voltage: 380V AC / 220V AC
- Output Current Range: 100A – 2000A
- Operating Altitude: ≤ 2000 m
- Operating Temperature: −10°C to +45°C
- Relative Humidity: ≤ 90% RH (non-condensing)
- Acoustic Noise Level: ≤ 55 dB
- MTBF: ≥ 100,000 hours
- Cabinet Dimensions (H × W × D): 2260 × 800 × 600 mm
The Motor-Type Emergency Power Supply (EPS) is a variable-frequency emergency power system specifically designed for motor loads with a single power source or first-class critical loads. It provides a three-phase, variable-frequency AC emergency power supply to ensure reliable operation of motors during mains power failure while significantly reducing electrical and mechanical shock during motor startup.
This system is primarily used for fire-fighting and emergency motor equipment, such as fire pumps, smoke exhaust fans, ventilation fans, water pumps, and other critical motor-driven devices. By integrating VFD (variable-frequency drive) technology into the EPS architecture, it ensures smooth motor starting, stable operation, and high reliability during emergency conditions.
The system adopts a floor-standing cabinet design and supports a wide power range, making it suitable for industrial buildings, public facilities, power plants, and large infrastructure projects.
Power System UPS
Technical Specifications:
- AC Input Voltage: 380V AC ±20% / 220V AC ±20%
- Grid Frequency: 50Hz ±5%
- Power Factor: 0.8
- AC Output Voltage: 380V AC ±3% / 220V AC ±3%
- Voltage Regulation Accuracy: ≤ ±0.5%
- Output Distortion Factor: ≤ 0.1%
- System Efficiency: ≥ 90%
- Insulation Resistance:
- Input to ground, output to ground, input to output: ≥ 10 MΩ at 1000V DC
- Dielectric Strength:
- Input to ground, output to ground, input to output: 2 kV AC, 1 minute, no breakdown or flashover
- Operating Temperature: −10°C to +45°C
- Relative Humidity: ≤ 90% RH (non-condensing)
- Audible Noise Level: ≤ 55 dB
- Cabinet Structure: Floor-standing
- Cabinet Dimensions (H × W × D): 2260 × 800 × 600 mm
The Power System UPS is a utility-grade uninterruptible power supply specifically designed for power systems, power plants, and substations. It provides online, zero-transfer-time AC backup power for critical loads with high voltage stability requirements.
The system is primarily used to supply uninterrupted power to protection and control systems, communication equipment, carrier systems, RTUs, monitoring systems, and emergency lighting devices. With high electrical isolation, strong anti-interference capability, and high reliability, the Power System UPS meets the strict operational and safety requirements of modern power infrastructure.
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