Overview
The GZD(W) series (microcomputer-controlled) DC power supply cabinet is a new-generation replacement product developed to meet the requirements for DC power supply cabinets in unattended substations. It is suitable for large, medium, and small power plants and substations, providing the DC power required for high-voltage switch opening and closing, relay protection, automatic control, and emergency lighting under normal operating and fault conditions.
Main Technical Specifications
1. Main Technical Specifications 1. Input voltage: AC380V ± 10%;
2. Output voltage: DC220V, DC110V, DC48V;
3. Output current: 10, 20, 30, 40, 50, 60, 100, 200A;
4. Voltage stabilization accuracy: ≤ 1%;
5. Current stabilization accuracy: ≤ 1%;
6. Ripple coefficient: ≤ 1%;
7. Overall noise: ≤ 55db;
8. Main transformer temperature rise: ≤ 60℃;
9. Operating mode: continuous operation.
Functional Features
1. It offers charging mode selection among main charging, equalizing charging, and float charging, with conveniently adjustable voltage. It also provides function selection between voltage-stabilized current-limiting and current-stabilized voltage-limiting modes.
2. The microcomputer monitoring unit adopts a large-screen, all-Chinese LCD display. The displayed content includes battery voltage, charging current, control bus voltage, charger output voltage and current, individual battery voltage, and a series of parameters of the DC system.
3. After AC power loss and restoration, the system can automatically select the optimal charging method to charge the battery according to the battery capacity. After the microcomputer monitoring unit exits the system, the normal operation of the DC system is not affected.
