Product Description

SPDZ DC surge protection device is applicable to the low-voltage standard IEC EN 50539-11, and is used to protect the DC system and other equipment from overvoltage and instantaneous overvoltage damage. When DC system experiences surge overvoltage due to lightning strikes or other reasons, the protector immediately conducts within nanosecond time, introducing surge overvoltage to the ground, thereby protecting the electrical equipment on the point network. DC surge protection device is a plug-in structure that can be quickly replaced after a module failure; After the lightning protection module fails, the color of the indicator window changes from green to red, and an alarm signal is sent to the remote alarm device connected to the remote signal terminal of the product.
DC Surge protection device are widely used in photovoltaic combiner boxes, power inverters, DC distribution cabinets, etc. It has the advantages of high discharge current, fast response time, and low residual voltage. The maximum photovoltaic voltage reaches UC≤1500VDC.

TECHNICAL PARAMETERS

1、The DC surge protector is suitable for preventing damage to the DC power supply system and electrical equipment caused by lightning overvoltage and transient overvoltage, and protects the safety of equipment and users. DC surge protectors are widely used in photovoltaic power generation systems, mobile communication base stations, microwave communication bureaus (stations), telecommunications equipment rooms, factories, civil aviation, finance, securities and other systems for DC power protection.

2、DC surge protectors are only used for various DC power supply systems, such as DC power distribution panels, DC power supply equipment, DC distribution boxes, electronic information system cabinets, and output terminals of secondary power supply equipment.

3、The DC surge protector adopts temperature control circuit breaker technology and built-in over-current protection circuit to completely avoid the fire risk caused by the self-heating of the surge protector; and select high-quality components and use advanced production technology to manufacture; large current capacity, The residual voltage is low; and the DC surge protector has its own remote alarm dry contact; the working status and failure status are clear and intuitive; the DC surge protector is easy to install and simple to maintain; the craftsmanship is exquisite and can be used in acid, alkali, dust, salt spray and Long-term work in harsh environments such as humidity.

4、Voltage level: DC12V 24V 48V 500V 690V 800V 1000V 1200V
The maximum discharge current of DC surge protector is divided into: 40KA, 60KA, 80KA, 100KA.

Product Parameters

WIRING DIAGRAM

MAIN STRUCTURE AND WORKING PRINCIPLE

In the photovoltaic power generation system, protective devices are connected between the positive and negative poles of the line and the ground. Under normal circumstances, the protective device is in a high resistance state. When a surge overvoltage occurs in the power grid due to lightning strikes or other reasons, the protective device will immediately conduct in nanoseconds, introducing the surge overvoltage to the ground, thereby protecting the electrical equipment on the power grid. When the surge voltage passes through the protective device and disappears, the protective device will change back to a high resistance state, This will not affect the normal operation of the power grid. The electrical schematic diagram of the surge protector is shown in the following figure.

Outline Dimension Drawing