T2 DC1000V Surge Protector Device SPD

Detailed Introduction & Advantages: The T2 DC1000V Surge Protector Device SPD from GREENWATT supplier is a Type 2 surge protector engineered for high-voltage DC systems. These systems—like 1000V PV farms or large energy storage stations—face unique risks: higher voltage means even small surges can cause more damage, and the equipment (like 1000V inverters) is often more costly to replace. This SPD addresses those risks directly.

It has a maximum continuous operating voltage of DC1000V, matching the normal voltage of high-voltage DC circuits. When a surge occurs—whether from a distant lightning strike or a sudden load change in the grid—it activates in under 25 nanoseconds. It clamps the voltage spike to a safe level (below 2500V for a 10kA surge), preventing it from traveling to connected equipment.

Technical Data

Technical Advantages Analysis

1. Rapid Response Mechanism

In the event of lightning strikes or grid transients, the GreenWatt T2 DC1000V Surge Protector Device SPD can activate protection within 25 nanoseconds, rapidly limiting surge voltage and preventing its conduction to the inverter or battery system.

2. Stable Voltage Clamping Capability

Under a 10kA surge current, it can control overvoltage below 2500V, effectively reducing the risk of insulation breakdown.

3. Adaptability to High-Voltage System Structures

Compared to 600V or 800V systems, 1000V systems have higher requirements for surge withstand capability. This product's structural design enhances insulation and heat dissipation capabilities, making it suitable for long-term operation in high-voltage environments.

4. Modular Design

Supports DIN rail mounting, facilitating rapid deployment and replacement within DC cabinets or photovoltaic combiner boxes.

Q&A

1. What is T1 SPD?

T1 SPD (Type 1 Surge Protective Device) is the primary surge protection device for large, infrequent surges (primarily from direct lightning strikes or major power grid faults).

T1: Type I tested SPDs evaluated using nominal discharge current In, 1.2/50μs impulse voltage, and maximum impulse current Iimp. Installed at system entry points (e.g., main distribution panels), it blocks extreme surges before they enter internal circuits and does not handle small, high-frequency surges.

2. What is T2 SPD ? How does it differ from T1 SPD ?

T2 SPD (Type 2 Surge Protective Device) is a secondary protection device for small, common surges (e.g., indirect lightning strikes or grid load variations).

T2: Class II SPD tested with nominal discharge current In, 1.2/50μs surge voltage, and maximum discharge current Imax. It clamps residual surges to safe voltage levels, protecting sensitive equipment (e.g., inverters).

3. Are T1 SPD and T2 SPD swap?

No. Installing T2 SPD in the incoming cabinet (T1 position) risks failure due to its low capacity handling large current surges. Conversely, installing T1 SPD at the load end (T2 position) fails to reduce small current surges to safe levels, potentially damaging sensitive equipment (e.g., BMS). Their design philosophies and functional roles differ fundamentally, making interchangeability impossible.