China GDIS Suppliers - Factory for Control Power Lightning & Interference Protection Solutions
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
QHow does GDIS protect control systems from interference?
The GDIS device effectively isolates high-frequency interference originating from the ground grid, reducing control system interference risks and preventing unplanned shutdowns.
QWhat is the interference suppression range of the GDIS device?
The device features an interference suppression frequency range of 75Hz to 100MHz, with a depression ratio ranging from 50% to 96% (higher than 80% on average).
QDoes GDIS remain operational if one module fails?
Yes, GDIS uses a dual parallel functional module design for redundancy. Damage to a single module does not disrupt the normal operation of the equipment or system grounding reliability.
QWhat are the transient limits for voltage and current suppression?
The GDIS device can handle a maximum transient suppression voltage of up to 25kV and a maximum transient suppression current of up to 320kA.
QWhat is the protection level and efficiency of this device?
It features an IP30 protection level, operates with an overall efficiency of over 98%, and maintains a low normal loss of 60W or less.



