FAQ
How often should AC SPD be inspected or replaced?
AC SPD should be inspected regularly, especially after thunderstorms or electrical faults. If the status indicator shows failure or the remote alarm indicates a fault, the SPD module should be replaced.
Can AC SPD protect equipment without proper grounding?
No. Proper grounding is essential for effective surge protection. Without a reliable grounding path, the SPD cannot safely discharge surge energy.
What does Imax or In mean in AC SPD?
In is the nominal discharge current that the SPD can repeatedly handle under standard test conditions. Imax is the maximum discharge current the SPD can withstand once under defined test conditions.
What pole configuration should I choose for AC SPD?
The pole configuration depends on the power system. Common options include 1P, 1P+N, 2P, 3P, 3P+N, and 4P. The selection should match the electrical system and grounding arrangement.
How do I choose between Type 1 and Type 2 AC SPD?
Type 1 SPD is recommended for the main incoming distribution side, especially where direct lightning risk exists. Type 2 SPD is commonly used in sub-distribution boards to protect downstream equipment from induced surges and switching overvoltage.
What is an AC power surge protective device?
An AC power surge protective device is used to protect low-voltage AC electrical systems from transient overvoltage caused by lightning, switching operations, or grid disturbances.
Shandong Cresin Electric Co., Ltd. SEO CEGLOBAL Privacy Policy
Contact Us
Address: No. 978 Tianchen Road, High-tech Zone, Jinan, Shandong,China
CAN’T FIND THE PRODUCT?
The product range includes production technologies for smart capacitors, digital display meters, surge protectors, dedicated backup protection devices for surge protectors, self-resetting over/under-voltage protectors, control and protection switches, and automatic transfer switches for dual power supplies.
Search HistoryClear All Records
- 全部
- 产品管理
- 新闻资讯
- 介绍内容
- 企业网点
- 常见问题
- 企业视频