GDIS for Control Power: China Suppliers & Factory Solutions for Lightning and Interference Protection
Functional Features
Effectively isolate high-frequency interference from the ground grid;
Reduce the risk of control system interference;
Prevent unplanned shutdown accidents caused by control system failures;
GDIS has fault alarm function;
The GDIS device has redundancy function and adopts a dual parallel functional module design. Single module damage does not affect the normal operation of the equipment and the reliability of system grounding;
Depression ratio higher than 80%;
To ensure the safety of electrical equipment, the GDIS device has redundant functions and adopts a dual parallel functional module design. Single module damage does not affect the normal operation of the equipment and the reliability of system grounding
Not only maintains the significant advantages of joint grounding and independent grounding, but also overcomes their respective shortcomings.
Technical Indicators
| Interference suppression frequency range | 75Hz~100MHz |
| Depression ratio | 50%~96% |
| Maximum suppression voltage | 25kV (Transient) |
| Maximum suppression current | 320kA (Transient) |
| Normal loss | ≤ 60W |
| Working temperature | -40~+60℃ |
| Temperature rise | < 20K |
| Noise | < 60dB |
| Protection level | IP30 |
| Overall efficiency | >98% |
Detail Pictures
Frequently Asked Questions
What is the primary function of the GDIS device?
The GDIS device is designed to effectively isolate high-frequency interference from the ground grid, reduce the risk of control system interference, and prevent unplanned shutdown accidents caused by control system failures.
How does the redundancy design improve GDIS reliability?
The GDIS device adopts a dual parallel functional module design. In the event of a single module damage, the normal operation of the equipment and the reliability of system grounding remain unaffected.
What range of interference frequencies can the GDIS suppress?
GDIS features a broad interference suppression frequency range, operating effectively from 75Hz up to 100MHz.
What are the maximum transient suppression capabilities of this device?
The GDIS device can handle a maximum transient suppression voltage of 25kV and a maximum transient suppression current of 320kA.
What are the operating temperature limits and environmental ratings?
The GDIS is built to operate under harsh conditions with a working temperature range of -40 to +60℃, a temperature rise of less than 20K, and an IP30 protection level rating.



