Customization Gzd (W) Series DC Power Supply for Substation & Power Plant, Battery Charger Cabinet

• Customization: Available
• Standard: GB, EN, China GB Code, JIS Code, TEMA, ASME
• Surface Treatment: Powder Coated
• Model NO.: GZD(W)
• Energy Source: Electric Arc
• Material: Stainless Steel
• Transport Package: Box
• Trademark: changjiang
• Origin: China
• HS Code: 8537209000
• Production Capacity: 10000
• Package Size: 1200.00cm * 600.00cm * 2000.00cm
• Package Gross Weight: 150.000kg

Product Description

Product Introduction
The CJDR low-voltage complete reactive power compensation device is an electromechanical device integrating grid reactive power compensation and operation status monitoring. It is a high-efficiency energy-saving device for improving power grid quality. The device automatically controls the switching of shunt capacitor banks based on the power factor value in the power distribution system, keeping the grid power factor always above 0.95.
Key Features:

• Automatic Compensation: The device automatically adjusts the compensation capacity according to changes in the system's reactive power, achieving optimal compensation results.
• Loss Reduction: Properly configured reactive power compensation devices can reduce line losses by 8% to 15% on average.
• Power Factor Improvement: By automatically switching capacitor banks, the system power factor is maintained above 0.95, reducing reactive losses and improving power supply efficiency.
• Multiple Protections: Equipped with overvoltage, undervoltage, phase loss, harmonic overlimit and other protection functions to ensure long-term stable operation.
• Intelligent Control: Adopts an intelligent controller supporting remote monitoring and automatic adjustment, tracking system reactive power changes in real time.
• Communication Interface: Supports RS485/Modbus communication protocol, enabling data exchange with host computer systems for unattended operation.
• Flexible Switching: Supports multiple switching methods including contactor switching (for stable loads), thyristor switching (for frequent operation), and composite switching (low power consumption, no inrush current).
• Strong Applicability: Suitable for reactive power compensation of continuously operating asynchronous motors and inductive loads, widely used in various industrial and civil power distribution systems.
• Standard Compliance: All technical indicators comply with GB/T 15576 and IEC 61439 standards.
• Operational Track Record: Has been stably operating in major projects such as the high-speed railway project of the Ministry of Railways.

Core Parameters

Parameter	Value
Rated Voltage	0.4kV (400V)
Rated Frequency	50Hz
Compensation Capacity	5kvar ~ 3000kvar
Response Time	≤20ms
Switching Method	Contactor / Thyristor / Composite Switch (optional)
Compensation Mode	Three-phase common compensation / Split-phase mixed compensation
Protection Degree	IP30 and above
Applicable Standards	GB/T 15576, IEC 61439

Application Scenarios
The CJDR low-voltage complete reactive power compensation device is widely used in industries such as metallurgy, mining, building materials, machinery manufacturing, light industry, chemical industry, ports, and other fields, especially under working conditions with large load variations.

Application Area	Specific Scenarios and Description
Industrial Manufacturing	Large factories in steel, cement, machining, automobile manufacturing, etc., which use a large number of inductive equipment such as motors and welders, maintaining the power factor within a reasonable range through reactive power compensation
Metallurgical Industry	Enterprises with high power consumption such as steel plants and aluminum smelters, reducing power loss and improving grid stability by compensating reactive power
Chemical Industry	Industries requiring high-power equipment for production such as petrochemicals, plastics, fertilizers, where capacitor banks help balance the grid and reduce equipment energy consumption
Power System	Substations and power distribution networks, improving reactive power distribution and enhancing grid stability
Mining Industry	Mining machinery with large load fluctuations, the device automatically tracks reactive power changes to keep the power factor stable above 0.95
Commercial Complexes	Places with high power quality requirements such as large shopping malls and office buildings, improving power efficiency and reducing electricity costs
Data Centers	Extremely high requirements for power supply quality; reactive power compensation improves power system stability and reliability
New Energy Power Stations	Supporting reactive power systems for photovoltaic, wind power and other new energy power stations to meet grid connection requirements
Transportation Facilities	Transportation infrastructure such as railways, ports, airports, ensuring stable operation of power supply systems; has been applied in high-speed railway projects
Construction and Civil Use	Power distribution systems in high-rise buildings and residential communities, reducing line losses and improving power supply quality

Product Introduction
The GZD(W) series intelligent high-frequency switch DC power supply cabinet is a new generation of power operating power supply designed for the future development direction of power system equipment. The system is mainly composed of intelligent high-frequency switch power modules, a central monitoring unit, maintenance-free batteries, and feeder circuits. The product utilizes advanced control technology, giving the rectifier modules intelligent control functions. It is designed and manufactured using high-frequency switching technology, computer technology, automatic control technology, touch screen technology, and data transmission technology, offering advantages such as a high degree of automation, simple operation, and good reliability.
Core Parameters

Parameter	Value
Model Series	GZD(W), GZDW
AC Input Voltage	AC380V±10%~±15%, three-phase five-wire or three-phase four-wire, 50Hz±5%
DC Output Voltage	DC220V, DC110V, DC48V, DC24V
Output DC Current	5A ~ 200A (N+1 redundant configuration); closing bus up to 3000A
Battery Capacity	10Ah ~ 3000Ah (maintenance-free lead-acid battery)
Voltage Regulation Accuracy	≤±0.5%
Current Regulation Accuracy	≤±1%
Ripple Coefficient	≤0.5% ~ ≤1%
Overall Efficiency	≥90%
Overall Noise	≤55dB
Protection Degree	IP20 ~ IP30
Operating Noise	≤50dB
Dielectric Strength	2000V/min, no flashover, no breakdown
Current Sharing Imbalance	≤±5%
Power Factor	≥0.95
Operating Mode	Continuous operation (long-term running)
Cooling Method	Intelligent temperature-controlled air cooling / high-efficiency natural cooling
Ambient Temperature	-10ºC ~ +45ºC
Altitude	≤2000m (special design available for higher altitudes)
Relative Humidity	≤90% (at 20±5ºC)
Applicable Standards	JB/T5777.4-2000, DL/T459-2000, GB/T8456-1996

Application Scenarios
The GZD(W) series high-frequency switch DC power supply cabinet is a highly reliable DC operating power supply device. Its core function is to convert AC power into stable and reliable DC power, providing operating, control, protection, and emergency power for various power equipment and automation devices. It is widely used in the following fields:
1. Power Systems
As a core application area, it is suitable for substations at all voltage levels from 10kV to 1000kV, large, medium and small power plants (thermal, hydro, nuclear), hydropower stations, switching stations, and switching substations. It provides DC power for high-voltage switch opening and closing operations, relay protection devices, automation devices, signal equipment, control circuits, and emergency lighting. The intelligent monitoring system supports unattended operation, making it especially suitable for substations in remote areas.
2. Industrial and Mining Enterprises, Petrochemical Industry
In industries such as metallurgy, mining, petroleum, chemical, and machinery manufacturing, it provides stable and reliable DC operating power for high-voltage switch opening/closing on production lines, relay protection of secondary circuits, automation control systems, and DC motor starting. In flammable and explosive environments such as petrochemical plants, the stability of DC power is particularly critical, and the multiple protection functions of this product can effectively ensure production safety.
3. Rail Transit and Transportation Facilities
In areas such as electrified railways, subways, light rail, airports, and ports, it provides uninterruptible DC power for circuit breaker opening/closing operations in the power supply system, instruments and meters in secondary circuits, relay protection, signal systems, and emergency lighting. This product has been stably operating in overseas transportation infrastructure projects such as the Port of Guinea.
4. Communications and Data Centers
In fields such as telecommunications base stations, data centers, radio and television, it provides high-quality DC power protection for communication equipment, servers, network equipment, and emergency lighting systems. The DC power supply system ensures that when the AC grid fails, the battery pack can supply power to the load without interruption.
5. High-Rise Buildings and Civil Facilities
In the power distribution rooms of high-rise buildings, office buildings, hotels, hospitals, banks, and residential communities, it serves as the operating and control power supply for high and low voltage distribution systems, providing backup DC power protection for key equipment such as fire protection systems, elevators, and emergency lighting.
6. New Energy Field
In new energy projects such as photovoltaic power stations, wind farms, and energy storage systems, it provides stable DC power for inverter control systems, data acquisition and monitoring systems (SCADA), and emergency protection devices.
7. Export and Overseas Projects
This product has been applied in infrastructure projects in countries along the "Belt and Road," such as the Port of Guinea. It is capable of adapting to special environments such as overseas grid fluctuations, high temperature, and high humidity, meeting the high reliability requirements of international projects for power equipment.