The importance of the neutral-ground voltage is immense, particularly in sensitive electronic systems such as bank ATMs, laboratory equipment, and cash registers. It is nearly impossible to maintain the neutral-ground voltage at the desired level of approximately 1V with fluctuations of no more than 0.2V. There are several reasons for this, but the primary source is, of course, the grounding system.
Grounding—divided broadly into protective grounding, operational grounding, and functional grounding—is the general definition given to the process of connecting systems to the earth using copper plates. This is done to prevent damage from leakages on metal bodies, static charges, or external effects like lightning, and most importantly, to ensure the safety of life and property.
Grounding types are generally categorized as TT, TN, and IT. In TT and TN systems, the protection point and operational grounding are linked at the grounding point. In IT systems, however, the grid grounding point is either isolated from the earth or grounded through an impedance, keeping them completely isolated from one another.
In TT and TN systems where the neutral-ground voltage exceeds 1V, a specific reduction can be achieved by feeding the problematic device through an external isolation transformer. For example, in a laboratory device or bank ATM where the neutral-ground voltage is 4V, this value can be reduced to the 2V level using an isolation transformer—provided that the problem originates from the grounding itself.
When the neutral-ground voltage is above 1V, high grounding resistance is only one of the potential causes for the value’s increase. While an isolation transformer can provide a partial solution in these cases, it offers no benefit when the problem originates from the neutral line.
Regardless of whether the problem is grounding-sourced or neutral-sourced, it is possible to achieve the desired neutral-ground voltage level with the GNDSeries. You can adjust this voltage to any desired ratio using GNDSeries, especially in the face of neutral-sourced issues where load imbalance is one of the biggest factors. Furthermore, you can visibly and measurably observe that you are free from the effects of fluctuations greater than 0.2V.
In systems where grounding is non-existent or weakened, you can use GNDSeries to prevent voltage formation on metal casings from posing a vital risk, and you can eliminate interference in audio and video systems caused by grounding issues. Additionally, with the integrated single-phase new generation surge arrester, you can protect your devices against lightning and transformer explosions.
In light of all this information, when comparing an isolation transformer with GNDSeries, it is logical to choose GNDSeries neutral-ground stabilizers. Used by many laboratories (notably TÜBİTAK), and preferred for ATM and cash register protection, the use of GNDSeries is increasing day by day in medical electronics—primarily laser devices—as well as medical imaging devices, audio systems, camera monitors, and similar products.
Simple precautions sometimes save lives. The best investment we can make for our family, our business, and our environment is protective measures. With Trimbox and GNDSeries, you can be protected from electricity-related damages and resulting electrical contact fires.
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