GZDW Type DC power supply cabinet
Key attributes
| Brand | Wone |
| Model NO. | GZDW Type DC power supply cabinet |
| Rated frequency | 50Hz ± 5% |
| AC input voltage | AC220V ± 10% |
| DC output voltage | DC48V |
| Series | GZDW |
Product descriptions from the supplier
Description ：
I produced GZDW series DC power screen widely used in the power system large, medium and small power stations and substations and other electrical equipment, secondary circuit protection devices DC power system, as a control, signaling, communications, protection and DC emergency lighting, motor starting and power units and other power equipment can also be used for post and telecommunications and other industries to meet the needs of power engineering, but also can be used as a DC voltage, constant current power supply, and other DC operating power. Our company is strong in technology, product performance and stability, has won the trust of customers, products sold throughout the country and abroad, is the Ministry of Power Industry sentinel GZDW series DC power supply cabinet (hereinafter referred to as: DC cabinet) production enterprises. Products in strict accordance with international and national quality assurance production, product type testing by the Ministry and experts management system, in line with JB / T 5777.4-2000 "power system DC power supply General technical conditions and safety requirements" and DL / T459-2000 "Power system DC power supply cabinet order technical conditions "requirement. This product uses high-frequency switching power supply module or phase-controlled rectifier device as charging float charging devices. GZDW with technical indicators advanced, low maintenance, high efficiency, small size and other characteristics of the battery charge, floating charge and DC power intelligent management of working conditions, protection of battery life. Equipped computer controller (PLC controller or microcontroller) of the product also has a remote function, improve the reliability and automation level of the DC system.
Technical feature：
Efficient power conversion technology.
Intelligent management function.
Compact structural layout.
High-reliability design.
Good electromagnetic compatibility.
Flexible configuration and expandability.
Main technical parameters:
The use of environmental conditions：
Should you ground a DC power supply?
A:Yes, in many cases, it is necessary to ground a DC power supply. Grounding helps to improve safety by preventing electric shock in case of insulation failure. It also helps to reduce electromagnetic interference and stabilize the electrical potential of the power supply, which is beneficial for the proper operation of electronic devices. However, there are some specific low - voltage and isolated DC power supplies that may not require grounding depending on the application and safety regulations.
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Related Knowledges
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Faults and Handling of Single-phase Grounding in 10kV Distribution LinesCharacteristics and Detection Devices for Single-Phase Ground Faults1. Characteristics of Single-Phase Ground FaultsCentral Alarm Signals:The warning bell rings, and the indicator lamp labeled “Ground Fault on [X] kV Bus Section [Y]” illuminates. In systems with a Petersen coil (arc suppression coil) grounding the neutral point, the “Petersen Coil Operated” indicator also lights up.Insulation Monitoring Voltmeter Indications:The voltage of the faulted phase decreases (in01/30/2026 -
Neutral point grounding operation mode for 110kV～220kV power grid transformersThe arrangement of neutral point grounding operation modes for 110kV～220kV power grid transformers shall meet the insulation withstand requirements of transformer neutral points, and shall also strive to keep the zero-sequence impedance of substations basically unchanged, while ensuring that the zero-sequence comprehensive impedance at any short-circuit point in the system does not exceed three times the positive-sequence comprehensive impedance.For 220kV and 110kV transformers in new constructi01/29/2026 -
Why Do Substations Use Stones, Gravel, Pebbles, and Crushed Rock?Why Do Substations Use Stones, Gravel, Pebbles, and Crushed Rock?In substations, equipment such as power and distribution transformers, transmission lines, voltage transformers, current transformers, and disconnect switches all require grounding. Beyond grounding, we will now explore in depth why gravel and crushed stone are commonly used in substations. Though they appear ordinary, these stones play a critical safety and functional role.In substation grounding design—especially when multiple gr01/29/2026 -
Why Must a Transformer Core Be Grounded at Only One Point? Isn't Multi-Point Grounding More Reliable?Why Does the Transformer Core Need to Be Grounded?During operation, the transformer core, along with the metal structures, parts, and components that fix the core and windings, are all situated in a strong electric field. Under the influence of this electric field, they acquire a relatively high potential with respect to ground. If the core is not grounded, a potential difference will exist between the core and the grounded clamping structures and tank, which may lead to intermittent discharge.I01/29/2026 -
Understanding Transformer Neutral GroundingI. What is a Neutral Point?In transformers and generators, the neutral point is a specific point in the winding where the absolute voltage between this point and each external terminal is equal. In the diagram below, pointOrepresents the neutral point.II. Why Does the Neutral Point Need Grounding?The electrical connection method between the neutral point and earth in a three-phase AC power system is called theneutral grounding method. This grounding method directly affects:The safety, reliabilit01/29/2026 -
What’s the Difference Between Rectifier Transformers and Power Transformers?What is a Rectifier Transformer?"Power conversion" is a general term encompassing rectification, inversion, and frequency conversion, with rectification being the most widely used among them. Rectifier equipment converts input AC power into DC output through rectification and filtering. A rectifier transformer serves as the power supply transformer for such rectifier equipment. In industrial applications, most DC power supplies are obtained by combining a rectifier transformer with rectifier equ01/29/2026
