The GZDW**AH/220V-BG wall-mounted DC power system is specifically designed by our company for low-capacity DC power systems, suitable for small-scale switch stations, small user sub-stations, and small sub-stations, as well as high-rise building high-voltage distribution systems. It features an integrated design approach, consisting of the TH220D03ZZ-3 module, THJK006G-3S monitoring silicon chain, small bracket, and wall-mounted power box. The wall-mounted power system integrates AC/DC modules, monitoring, silicon chain, and AC/DC distribution, allowing for a complete DC operation power system to be set up with just an external battery pack.

The GZDW**AH/220V-BG Wall-Mounted Power Supply DC System boasts features such as compact size, simple and aesthetically pleasing structure, easy installation, and flexible system configuration. It is suitable for systems below 220V/38AH and 110V/65AH. Modular design, N+1 hot backup, allows for smooth expansion to accommodate various capacity systems. Modules can be plug-and-play, ensuring safe and convenient replacement. The monitoring function is comprehensive and highly intelligent, utilizing a large LCD screen with Chinese characters and audio-visual alarms. It offers local and remote monitoring for all components of the system: AC distribution, rectification module, and DC supply. Key monitored parameters include: module power on/off, charging mode, output voltage adjustment, output current limiting, PT supply current limiting, battery circuit breaker trip alarm, and automatic battery charging management. The monitoring system is equipped with standard RS-485 and RS-232 interfaces, facilitating connection to automated systems and achieving "four remote" and unattended operation. It also provides CDT and MODBUS communication protocols for user selection. For automatic management and maintenance of battery storage, it features real-time monitoring of battery group voltage, charging/discharging current, and automatic control of equalization and floating charging, as well as regular maintenance equalization charging. The intelligent system has battery temperature compensation and realizes bus insulation online monitoring. The system includes an automatic voltage reduction silicon chain section, with the voltage reduction unit featuring automatic control functionality and the ability to set the silicon chain output voltage. The AC distribution unit includes one single-phase AC input with an optional PT backup supply; when PT供电 is active, the system automatically limits output power. The DC distribution unit provides two bus outputs, three control bus outputs, and offers one battery circuit breaker.

Chapter 2: Wall-Mounted Power Box

2.1 Features

 Suitable for systems consisting of 38AH/220V or below, or 65AH/110V or below.

Up to 3 TH220D03ZZ-3 natural cooling digital intelligent modules can be installed (or TH110D05ZZ-3).

The voltage reduction unit features an automatic silicon-controlled rectifier (SCR) voltage reduction function, controlled by an intelligent CPU. It has a maximum working current of 2.0A, a surge current of 30A for 0.5 seconds, and allows setting the SCR output voltage. (For the 110V system, the maximum working current is 3.0A.)

Monitor features an LCD display, Chinese menu, button operation, enabling system parameter setting, system working parameter display, system fault indication, and system parameter calibration.

Monitor features automatic battery management.

Monitor can be connected to the battery inspection unit (DCXJ-19) to complete voltage detection for 18 batteries.

Monitor battery voltage, control bus voltage, control bus current, battery charging/discharging current, and module status.

Provide RS232/RS485 communication interfaces with CDT and MODBUS protocols for connection to power station automation systems.

 Provide a single-phase AC input and a PT100V input.

· When powered by PT, the system automatically limits the output power with an output current limit of 2.0A. For the 110V system, the output current limit is 3.0A.

 Equipped with busbar insulation monitoring function. Busbar grounding fault alarm.

• Equipped with a battery circuit breaker trip alarm function.

Monitor fault bypass switch. (Close the bypass switch before removing the monitor to ensure the control power is not interrupted.)

In-line exit, bottom entry. (Exit hole diameter 4 * Φ30)

Modular components are hot-swappable.

2.2 Technical Specifications

Final interpretation rights of the module belong to the manufacturer. Our company specializes in the sales, repair, and testing services of various charging modules for DC screen simulators.

Since its establishment, Shanghai Ren Automation Technology has been dedicated to exploring, learning, and innovating in DC power technology. We don't offer a wide variety of products; we specialize in just one type of product — DC power screens.

We are one of the few companies capable of repairing DC screen charging module mainboards, and we can service the majority of DC power modules available on the market.

We've always believed that owning technology is the key to owning the market.

Our DC power panels passed the inspection by the National Relay Protection and Automation Equipment Quality Supervision and Inspection Center in 2012, as well as the Xuchang Kape Electric Inspection and Research Institute (Certificate No. JW120747).

Decades of technical accumulation, stemming from our passion and interest in the DC power supply industry!

We are committed to providing our clients with high-quality, stable, and reliable DC power technology. Our charging modules incorporate the following technologies:

Resonant Voltage-Controlled Power Converter - Full-Switching Soft Switching Technology

Soft Switched Resonant DC-AC Inverter Circuit Technology

Resonant Voltage-Controlled Power Converter Technology

Active Power Factor Correction Step-Up Transformer Technology

Quality and excellence in products are essential for better service to our clients and the creation of value for them.

For a decade, through storms and trials, we remain true to our初心, producing high-quality domestic DC screens. We continuously learn, improve ourselves, engage in healthy competition, appreciate each other, and support one another. Welcome friends to call for inquiries and discuss cooperation.

Which DC screen is the best? Shanghai Junren offers great quality and competitive prices!

This product features high automation, requiring minimal expertise from the operator for routine operations. Following this user manual, anyone can operate it.

Operating Environment

2.1 Altitude not exceeding 2,000 meters.

2.2 Environmental Temperature: -10 ~ +50℃

2.3 The average relative humidity on the 2nd day of the month shall not exceed 95%, and the monthly average relative humidity shall not exceed 90%.

2.4 Free from severe vibration and impact, and without strong electromagnetic field interference.

2.5 No serious dust, explosive hazard medium, corrosive metals, harmful gases that damage insulation, conductive particles, or severe mold is present around the 2.5.

2.6 The vertical tilt is not greater than 5 degrees.

Section 3: Technical Specifications

3.1 Three-phase AC input voltage: 380V (±15%, -10%), frequency: 50 Hz ±0.5.

3.2 DC Output Voltage of Control Busbar: 220V / 24V / 48V / 110V

3.3 Rated direct current output current of busbar: 40A.

3.4 The rated capacity of the maintenance-free, fully-sealed lead-acid battery is applicable for: 40AH-500AH (this case is 120AH).

3.5 Bus voltage stability: ≤±0.2%

3.6 Bus Voltage Ripple Factor ≤ ±0.1%

3.7 Constant Current Accuracy ≤ ±0.5%.

3.8 Switched Bus Voltage ≤ 15%, 10%

3.9 Maximum Output Current (A): 1.2IN

3.10 Efficiency ≥ 90%.

3.11 Power Factor > 0.90.

3.12 Response Speed: 0.2 ms.

3.13 Total Noise ≤50dB.

3.14 Flow Distribution Method: Automatic Flow Distribution.

3.15 Harmonics: No Interference.

3.16 Input Terminal High Voltage Surge: Level 4 Lightning Protection

Direct Current Screen Charging Module Fault Code